Me ka hoʻomau mau ʻana o nā kūlana ola o nā kānaka a me ka hoʻonui ʻana i ka manaʻo nui i ka pilina holoholona, ua ulu wikiwiki ka ʻoihana meaʻai puaʻa honua i nā makahiki i hala iho nei. Manaʻo ʻia nā holoholona ma ke ʻano he lālā koʻikoʻi o ka ʻohana, a ua lilo ko lākou olakino meaʻai a me ka maikaʻi o ka meaʻai i mea nui o nā mea mālama holoholona. Ua hoʻoikaika kēia i ka hoʻomaikaʻi mau ʻana o ka ʻenehana hana ʻai meaʻai holoholona a me nā lako, ka waiho ʻana i nā koi kiʻekiʻe no ka palekana, meaʻai, ʻono a me ke ʻano o ka meaʻai holoholona. Kūpaʻa mākou i ka hoʻolako ʻana i nā extruder ʻoihana i hoʻolālā kūikawā ʻia no ka hana ʻana i ka meaʻai, me ka ʻike waiwai i ka hana ʻai meaʻai holoholona, a hiki iā ia ke hāʻawi i nā ʻōnaehana hoʻoponopono i manaʻo ʻia no nā ʻano meaʻai holoholona, kōkua i nā ʻoihana e hoʻomaikaʻi i ka pono hana, hōʻoia i ka maikaʻi o ka huahana, a loaʻa ka lanakila ma ka hoʻokūkū ikaika o ka mākeke.
E kālele ana kēia ʻatikala ma ke kahua o ka meaʻai holoholona, ka wehewehe ʻana i ka ʻenehana hana meaʻai holoholona, ke kumu hana o ka puffing screw extrusion, nā pono o kā mākou extruders, a me ka hoʻohana pono ʻana o nā mea extrusion i ka hana ʻai meaʻai holoholona. E hoʻohui pū ia i nā palena ʻenehana kikoʻī, kaʻina hana a me nā wahi ʻeha o ka ʻoihana e hoʻonui i ka ʻike, e hoʻokō i ka helu huaʻōlelo koi o 3000-4000 huaolelo, a hāʻawi i ka ʻike kikoʻī a me ka ʻoihana no nā ʻoihana kūpono a me nā loea i ka ʻoihana meaʻai holoholona.
1. ʻO ka nānā ʻana o ka ʻoihana meaʻai holoholona a me nā ʻano hana
1.1 ʻO ke kūlana o kēia manawa a me ka ulu ʻana o ka ʻoihana meaʻai holoholona
I nā makahiki i hala iho nei, ua hōʻike ka mākeke meaʻai holoholona honua i kahi ulu ulu mau. Ke alakaʻi ʻia e nā kumu e like me ka hoʻonui ʻana i ka nui o nā holoholona, ka hoʻomaikaʻi ʻana i nā manaʻo ʻai holoholona, a me ka hoʻomaikaʻi ʻana i nā kamaʻāina’ mana kūʻai, ke koi no ke kiʻekiʻe, ua hoʻomau ka piʻi ʻana o ka meaʻai holoholona a me ka hana. E like me nā ʻikepili pili pili, ua ʻoi aku ka nui o ka mākeke meaʻai holoholona honua 100 piliona kālā ʻAmelika, a ua manaʻo ʻia e mālama i ka ulu ulu o 5%-8% i nā makahiki e hiki mai ana. Iwaena o lakou, meaʻai pipi maloʻo puffed, e like me ke ʻano huahana nui loa, ʻoi aku ma mua o 60% o ka huina o ka mākeke meaʻai holoholona, a ukali ʻia e nā huahana kīʻaha pulu, nā huahana semi-mā a me nā meaʻai pipi.
Hōʻike nui ʻia ke ʻano hoʻomohala o ka ʻoihana meaʻai holoholona ma nā ʻano ʻekolu: ka mua, meaʻai a me ke olakino. ʻOi aku ka nui o ka nānā ʻana o ka poʻe kahu holoholona i ka ʻano meaʻai o ka meaʻai holoholona, a me nā huahana me ke kūlohelohe, mea hoʻohui ʻole, hana (e like me ka nani o ka lauoho, hānai ʻōpū, hoʻomalu kaumaha) ʻoi aku ka kaulana o nā hiʻohiʻona; ka lua, ʻokoʻa o nā ʻano huahana. Me ka hoʻonui ʻana i nā ʻano holoholona a me nā pono pilikino o nā mea nona nā holoholona, Ua ulu mālie ka meaʻai holoholona i ka mahele, e like me ka meaʻai holoholona no nā makahiki like ʻole (nā ʻīlio, ʻīlio makua, ʻīlio kahiko), ʻano ʻano ʻokoʻa, a me nā kūlana kino like ʻole; ke kolu, naʻauao a me ka pono o ka ʻenehana hana. I mea e hoʻokō ai i ka noi hana nui a hōʻoia i ka paʻa o ka maikaʻi o ka huahana, Ke hoʻolauna mau nei nā ʻoihana hana ʻai meaʻai holoholona i nā lako hana holomua a me nā ʻōnaehana naʻauao e hoʻomaikaʻi i ka hana hana a hōʻemi i nā kumukūʻai hana..
Kūʻē i kēia kāʻei kua, ʻenehana extrusion puffing, e like me ka ʻenehana koʻikoʻi o ka hana ʻana i nā meaʻai holoholona (ʻoi aku ka nui o nā huahana puffed maloʻo), ua lilo ia i kī no ka hoʻoholo ʻana i ka maikaʻi o ka meaʻai holoholona a me ka hoʻokūkū o nā ʻoihana. Hoʻokumu ʻia kā mākou extruders ʻoihana no ka hana ʻana i nā meaʻai holoholona e pane i nā hiʻohiʻona o ka ʻoihana a me ka noi mākeke, hiki ke hoʻoponopono maikaʻi i nā wahi ʻeha i ka hoʻoili ʻana i ka meaʻai holoholona a kōkua i nā ʻoihana e hoʻokō i ka hana kiʻekiʻe a maikaʻi.
1.2 Hoʻokaʻawale ʻana i nā meaʻai pipi a me kāna mau ʻano hana
He ʻokoʻa nā ʻano hoʻohālikelike ka meaʻai holoholona, hiki ke hoʻokaʻawaleʻia i nāʻano likeʻole e like me kaʻenehana hana, ʻano wai, ʻano huahana a hoʻohana. Iwaena o lakou, e like me ka ʻenehana hana a me ka ʻike wai, Māhele ʻia ka meaʻai holoholona i nā huahana puffed maloʻo, nā huahana semi-wet, huahana puffed palupalu, nā huahana kīʻaha pulu a me nā mea ʻai (a i ʻole ka mālama ʻana). Loaʻa i kēlā me kēia ʻano meaʻai holoholona kona ʻano hana ponoʻī a me nā koi no nā lako, penei:
1.2.1 Huahana Puff maloo:
ʻO ka meaʻai pipi maloʻo ka mea maʻamau o ka meaʻai pipi, me ka wai o 10%-12%. ʻO ka ʻai ʻiʻo kona mau mea maka, ʻai iʻa, kīʻaha (kulina, palaoa, laiki), pāʻina soya, nā huaora, nā minerala a me nā mea hoʻohui ʻē aʻe. ʻO ke kaʻina hana o nā huahana puffed maloʻo e pili kokoke ana i ke kaʻina hana puffing, ka mea e koi ai i ka hoʻohana ʻana i nā lako extrusion puffing e hana i nā mea maka i nā huahana granular me ka nui like, ʻono ʻono a me ka ʻono maikaʻi. ʻO nā hiʻohiʻona o nā huahana puffed maloʻo he ola lōʻihi, ka mālama pono a me ka lawe ʻana, a me ke kumu kuai haahaa, i kūpono no ka hana nui a kaulana i waena o nā mea mālama holoholona.
ʻO ke koʻikoʻi kaʻina hana o nā huahana puffed maloʻo ʻo ia ka pono e hoʻopiha piha ʻia nā mea maka, no laila ua hoʻopiha piha ʻia ka starch i loko o nā mea maka, he mea kūpono i ka hoʻoemi ʻana a me ka ʻai ʻana o nā holoholona. I ka manawa like, Pono ka huahana e loaʻa i kahi ʻano paʻakikī a me ka ʻokiʻoki e hoʻokō i nā pono o nā holoholona a kōkua i ka hoʻomaʻemaʻe ʻana i ko lākou mau niho.. Hāʻawi kēia i nā koi kiʻekiʻe ma ke kaomi extrusion, ka mahana a me ka māmā holo o ka extruder.
1.2.2 Nā huahana Semi-Wet:
Loaʻa i ka meaʻai pipi semi-weti ka wai o 25%-35%, aia ma waena o nā huahana maloʻo a me ka pulu. Ua like kona mau mea maka me na hua puffed maloo, akā ʻoi aku ka nui o nā humectants (e like me propylene glycol, sorbitol) hoʻohui ʻia e mālama i ka palupalu a me ka maʻa o ka huahana. ʻO ke kaʻina hana o nā huahana semi-wete pū kekahi e pono ai ka lāʻau puffing, aka, ua oi aku ka ha'aha'a ma mua o na hua maloo. Loaʻa i ka huahana nā ʻano o ka ʻono palupalu a me ka palatability maikaʻi, i kūpono i nā holoholona me ka hiki ʻole ke nau (e like me nā holoholona ʻelemakule, nā holoholona maʻi).
Aia ka paʻakikī o ka hana ʻana i nā huahana semi-wet i ka mālama ʻana i ka ʻike wai a me ka pale ʻana i ka pōʻino o ka huahana. No laila, i ke kaʻina hana, pono e hoʻomalu pono i ka mahana a me ka haʻahaʻa o kēlā me kēia loulou, a koho i nā mea mālama a me nā humectants kūpono e hōʻoia i ke ola o ka huahana.
1.2.3 Huahana Puffed Soft:
Loaʻa i ka ʻai o nā meaʻai pipi puffed palupalu ka wai o 15%-25%, ʻo ia ka huahana ma waena o nā huahana puffed maloʻo a me nā huahana semi-wet. Ua like kona kaʻina hana me nā huahana puffed maloʻo, akā, hoʻoponopono ʻia nā ʻāpana a me nā extrusion e hana i ka huahana palupalu a elastic. Hoʻohui nā huahana puffed palupalu i nā mea maikaʻi o nā huahana maloʻo a semi-wet, me ka palatability maikaʻi a me ka maʻalahi o ka ʻai ʻana, i kūpono i nā ʻano holoholona like ʻole.
1.2.4 Nā Huahana Pāʻani Mākū:
ʻOi aku ka nui o ka wai ma mua o ka meaʻai pipi pā kini 70%, ka nui o ka hoʻohana ʻana i ka ʻiʻo hou, iʻa, nā mea kanu a me nā mea maka, i hana ʻia e ka kuke ʻana, canning, sterilization a me nā hana ʻē aʻe. ʻOkoʻa mai nā ʻano huahana ʻē aʻe, ʻAʻole pono nā mea kanu pulu i ka lāʻau puffing, a ʻo kā lākou mau loulou kaʻina hana koʻikoʻi ke kuke a me ka sterilization. Loaʻa i ka huahana nā hiʻohiʻona o ka momona momona, ka palatability ikaika a me ka makū kiʻekiʻe, He mea kūpono ia no nā holoholona ʻaʻole makemake i ka wai inu a makemake ʻole i ka meaʻai hou.
ʻO ke kī i ka hana ʻana i nā huahana canned pulu e hōʻoia i ka hou a me ka palekana o nā mea maka, a mālama pono i ka mahana sterilization a me ka manawa e pepehi i nā hua bacteria ʻino i loko o ka huahana a hoʻonui i ke ola o ka papa. I ka manawa like, pono e hōʻoia ʻaʻole i nalowale nā mea waiwai o ka huahana i ka wā kuke a me ka sterilization.
1.2.5 Nā meaʻai ʻai holoholona (a i ʻole Treats):
He meaʻai kōkua nā meaʻai pipi no nā holoholona, hoʻohana nui ʻia e uku i nā holoholona, hoʻomaikaʻi i ko lākou ʻano a hoʻohui i ka meaʻai. He ʻokoʻa nā ʻano mea ʻai meaʻai holoholona, me nā mea ʻai ʻai puffed, meaʻai ʻai maloʻo, ʻai ʻai ʻai, nā meaʻai niho, etc. Iwaena o lakou, puffed snacks no ka hapa nui, a ua like kā lākou hana ʻana me nā huahana puffed maloʻo, akā, ʻoi aku ka maikaʻi o ke ʻano, a ʻoi aku ka nui o nā mea ʻono a me nā mea hoʻohui hana e hoʻokō i ka ʻono a me nā pono hana o nā holoholona.
Loaʻa i nā meaʻai meaʻai holoholona nā koi kiʻekiʻe no ka ʻono, helehelena a me ka hana. ʻo kahi laʻana, Pono ka paʻakikī a me ke ʻano o nā meaʻai niho e kōkua i ka hoʻomaʻemaʻe ʻana i nā niho o ka holoholona a pale i ka helu niho.; pono e hoʻohui i nā mea ʻai e like me ka lecithin e kōkua i ka hoʻomaikaʻi ʻana i ka lauoho o ka holoholona. Pono kēia i ka extruder e loaʻa ka maʻalahi a me ka hiki ke hoʻokō i nā pono hana o nā ʻano meaʻai like ʻole.
He mea pono e hoʻomaopopo ʻia koe wale nō nā huahana canned, ʻO ka hapa nui o nā ʻano meaʻai pipi e pili kokoke ana i ke kaʻina puffing. ʻAʻole ʻo ka puffing wale nō ka ʻāpana nui o ka hana ʻana i ka meaʻai holoholona, akā pili pono i ka maikaʻi, ʻono, nutrition and digestibility of pet food. No laila, choosing the right extrusion equipment and mastering the scientific extrusion technology are crucial for pet food processing enterprises.
2. Core Technology of Pet Food Processing: Extrusion Puffing Technology
Extrusion puffing technology is a key processing technology integrating mixing, kawili ʻana, hoʻomehana, extrusion and puffing. It has been widely used in the production of pet food due to its advantages of high production efficiency, maikaʻi huahana maikaʻi, hiki ke hoʻololi ikaika i nā mea maka a me ka laulā noi. In the processing of pet food, extrusion technology is mainly used to realize the puffing of raw materials, make the starch gelatinize, the protein denature, and improve the palatability and digestibility of the product. I ka manawa like, it can also kill harmful bacteria in the raw materials, ensure the safety of pet food.
2.1 Characteristics of Pet Food Raw Materials and Requirements for Extrusion Equipment
The raw materials of pet food are mainly meat products (such as meat meal, ʻai iʻa, ʻiʻo hou), kīʻaha, pāʻina soya, nā huaora, nā minerala a me nā mea hoʻohui ʻē aʻe. Iwaena o lakou, meat products account for a large proportion, making the product have strong viscosity. This characteristic puts forward special requirements for extrusion equipment:
Single-screw extruders are not suitable for the economic production of pet food. No ka mea, loaʻa i ka extruder hoʻokahi-screw kahi ʻāpana ʻoki haiki, ʻaʻohe hopena hoʻomaʻemaʻe iā ia iho. When processing viscous materials such as meat products, he mea maʻalahi ke kumu o ka hōʻiliʻili waiwai, blockage and uneven mixing in the extruder barrel, which not only affects production efficiency, but also leads to unstable product quality. Kahi mea hou aʻe, ʻO ka extruder hoʻokahi-screw he kiʻekiʻe ka ikehu i ka wā e hoʻoponopono ai i nā mea momona momona a kiʻekiʻe, ka mea e hoʻonui ai i ke kumukūʻai hana o nā ʻoihana.
Nā mea hoʻokuke māhoe māhoe, ma ka lima ʻē aʻe, loaʻa nā pōmaikaʻi i ka hana ʻana i ka meaʻai holoholona. ʻOi aku ka nui o ko lākou ʻāʻī, ʻoi aku ka maikaʻi o ka hopena pumping a me ka hopena hoʻomaʻemaʻe ponoʻī, hiki ke hoʻoponopono maikaʻi i nā pilikia o ka viscosity a me ka hōʻiliʻili. Hiki i ka twin-screw extruder ke hoʻomaopopo i ka hui pū ʻana, kawili ʻana a me ka extrusion o nā mea, ʻoiai i ka hana ʻana i nā mea maka me ka momona kiʻekiʻe a me ka ʻiʻo hou, hiki iā ia ke hōʻoia i ka hana paʻa a me ka maikaʻi o ka huahana. No laila, i ka hana maoli i ka ai holoholona, ua lilo nā māhoe extruders i mea nui o ka puffing meaʻai holoholona, a hoʻohana nui ʻia i ka hana ʻana i nā huahana puffed maloʻo, nā huahana semi-wet, nā mea momona palupalu a me nā ʻai meaʻai holoholona.
2.2 Working Principle of Screw Extrusion Puffing
The screw extrusion puffing process of pet food is a complex physical and chemical process, which involves the interaction of multiple factors such as temperature, kaomi, shear force and time. The specific working principle is as follows:
Ka mua, raw material pretreatment. The powdery raw materials containing a certain amount of starch (ma mua o 20%) are mixed uniformly according to the formula, and then sent to the tempering device for tempering treatment. The purpose of tempering is to adjust the moisture content and temperature of the materials, so that the materials can reach the ideal state before entering the extruder. ʻO ka maʻamau, the moisture content of the materials after tempering is controlled at 10%～27%, and the temperature is raised to 70～98℃. I ka wā o ke kaʻina hana ʻana, hoʻopaʻa like nā mea i ka wai, He mea kūpono ia i ka gelatinization o ka starch a me ka denaturation o ka protein, a hiki ke hoemi i ka lole o ka extruder screw a me ka barela.
Ka lua, extrusion a me ka wela. Hoʻokomo nā mea hoʻonaninani i ka lua extrusion screw ma o ka mea hānai. ʻO ka lua extrusion screw i haku ʻia me kahi wili a me kahi pahu, a e emi malie ana ka leo o ka lua extrusion ma ka aoao axis. Ke kaʻawili ʻana o ka wili, hoʻokuke mau i nā mea i mua, a ua hoʻopili mālie ʻia nā mea hana ma lalo o ka hana o ka wili a me ka barela, a piʻi mālie ke kaomi i loko o ka lua extrusion. ʻO ka lākiō kaomi (ka lakio o ka nui o ka mea ma ka hopena hānai i ka leo ma ka hopena extrusion) hiki i ka 4~10, ʻokoʻa e like me ke ʻano o ka meaʻai holoholona a me ke ʻano o nā mea maka.
I ka wā o ka hoʻokuʻu ʻia a hoʻokuʻu ʻia e ka wili, ʻO nā mea i hoʻopaʻa ʻia i ka ikaika shear ikaika a me ka ikaika friction. Hoʻokumu ʻia ka ikaika shear e ka neʻe pili ma waena o ka wili a me ka barela, a ma waena o nā lele wili. Hiki iā ia ke wāwahi i nā ʻāpana o nā mea, e hoʻohui like i nā mea maka a me nā mea hoʻohui, a hoʻoikaika i ka gelatinization o ka starch a me ka denaturation o ka protein. Hoʻokumu ʻia ka ikaika friction ma waena o nā mea a me ka paia o loko o ka pahu, a ma waena o nā ʻāpana kino, hiki ke hooulu i ka wela nui, he mea kūpono i ka hoʻomehanaʻana i nā mea. Kahi mea hou aʻe, e like me nā pono hana, Hiki ke kahe ka mahu ma ka ʻaʻahu barela e wela ai nā mea ma waena o nā paia, no laila, aia nā mea i loko o ka extrusion cavity i kahi kūlana kiʻekiʻe a me ke kiʻekiʻe. ʻO ka mahana o ka extrusion cavity e hoʻomalu mau ʻia ma 120 ~ 180 ℃, a ua hoʻomalu ʻia ke kaomi ma 2 ~ 10MPa.
Ke kolu, ka starch gelatinization a me ka denaturation protein. Ma lalo o ka hana o ka wela wela, ke kaomi kiʻekiʻe a me ka ikaika shear, ʻo ka starch i loko o nā mea waiwai e hoʻopili i ka wai a hoʻonui, pau ka hale aniani, a ua hoʻololi ʻia i kahi kūlana amorphous, i kapa ʻia ka starch gelatinization. Hiki i ka starch gelatinization ke hoʻomaikaʻi i ka digestibility o ka meaʻai holoholona, no ka mea, ʻoi aku ka maʻalahi o ka hoʻoheheʻe ʻia ʻana o ka starch gelatinized e nā enzyme digestive o nā holoholona. I ka manawa like, hiki i ka gelatinized starch ke hoʻomaikaʻi i ka viscosity a me ka ikaika paʻa o nā mea, ka hana ʻana i nā huahana extruded i ke ʻano maikaʻi a me ke ʻano.
Ma waho aʻe o ka gelatinization starch, ʻO ka protein i loko o nā mea e loaʻa pū i ka denaturation ma lalo o ka hana o ka wela kiʻekiʻe a me ke kaomi kiʻekiʻe. ʻO ka denaturation protein e pili ana i ka hoʻololi ʻana o ka hoʻolālā spatial o nā molekole protein me ka ʻole o ka hoʻololi ʻana i ke ʻano kumu mua., hiki ke hoʻomaikaʻi i ka solubility a me ka digestibility o ka protein, a e hoʻomaikaʻi maikaʻi i ka meaʻai holoholona. I ka manawa like, hiki i ka protein denatured ke hana i kahi ʻōnaehana pūnaewele, hiki ke wili i ka starch a me nā mea ʻē aʻe, kōkua i ka mālama ʻana i ke ʻano o ka huahana puffed.
Ka ʻehā, ka huʻi a me ke ʻano. When the materials in the high-temperature and high-pressure state are pushed to the die head by the screw and extruded from the die hole at a high speed, the temperature and pressure of the materials drop sharply because they suddenly leave the extrusion cavity and enter the normal atmospheric environment. Under the combined action of pressure difference and temperature difference, the water in the materials evaporates rapidly, the volume of the materials expands rapidly (the expansion rate can reach 2～8 times), and the materials are dehydrated and solidified quickly to form a porous, crisp or soft puffed product.
After extrusion from the die hole, the puffed materials are cut into short particles of uniform length by the cutting device (rotary knife) installed at the die head. Hiki ke hoʻololi ʻia ka lōʻihi o nā ʻāpana ma ka hoʻololi ʻana i ka wikiwiki o ka pahi rotary e hoʻokō i nā koi o nā ʻano meaʻai holoholona.. ʻo kahi laʻana, ʻoi aku ka liʻiliʻi a pōkole nā ʻāpana o ka ʻai ʻīlio, ʻoiai ʻoi aku ka nui a me ka lōʻihi o nā ʻāpana o ka ʻai ʻīlio makua.
Ka lima, hana hope. Pono e hele nā ʻāpana puffed extruded ma nā loulou post-processing e like me ka maloʻo, hooluolu, ka mea ʻono a me ka hoʻopili ʻana e lilo i huahana meaʻai pipi hope loa. ʻO ka hoʻomaloʻo ʻana i ka hoʻemi ʻana i ka wai o nā ʻāpana i ka pae maʻamau (10%-12% no nā hua maloʻo), i mea e hooloihi ai i ke ola o ka huahana. ʻO ka hoʻoluʻu ka hoʻemi ʻana i ka mahana o nā mea maloʻo i ka lumi wela, pale i ka hua mai ka pala a me ka pohō. ʻO ka hoʻoulu ʻana ʻo ia ka pulupulu ʻana i nā mea ʻono, nā mea hoihoi a me nā mea hoʻohui ʻē aʻe ma luna o ka ʻili o nā ʻāpana e hoʻomaikaʻi i ka palatability o ka huahana. ʻO ka Packaging ka hoʻopili ʻana i nā ʻāpana i hoʻomaʻamaʻa ʻia i loko o nā ʻeke a i ʻole nā kini e hōʻoia i ka maʻemaʻe a me ka palekana o ka huahana a maʻalahi i ka mālama ʻana a me ka lawe ʻana..
2.3 ʻO nā kumu nui e pili ana i ka hopena Puffing Screw Extrusion
Hoʻopili pololei ka hopena o ka puffing screw extrusion i ka maikaʻi o ka meaʻai holoholona. Nui nā kumu e pili ana i ka hopena puffing, ʻo ka nui me nā hiʻohiʻona maka, nā palena hoʻonanea, nā ʻāpana extrusion a me ka hoʻolālā poʻo make. ʻO ka hoʻopaʻa ʻana i kēia mau kumu nui a me ka hana ʻana i nā hoʻoponopono ʻepekema hiki ke hōʻoia i ka paʻa o ka hopena puffing a me ka kūlike o ka maikaʻi o ka huahana..
2.3.1 Nā ʻano mea ʻala:
ʻO ke ʻano, nui ʻāpana, moisture content and nutritional composition of raw materials have a great impact on the puffing effect. ʻo kahi laʻana, the starch content of raw materials directly affects the expansion rate of the product. The higher the starch content (within a certain range), the better the puffing effect, and the larger the expansion rate of the product. The particle size of raw materials should be uniform, generally 80-100 makaʻu. If the particle size is too large, the materials are not easy to be mixed uniformly and plasticized fully, which affects the puffing effect; if the particle size is too small, it is easy to cause material blockage and increase energy consumption. The moisture content of raw materials before tempering should be controlled at 8%-12%. Inā kiʻekiʻe loa ka makū, the materials are easy to stick to the screw and barrel, affecting the extrusion and puffing; if the moisture content is too low, the shear force and friction force between the materials are insufficient, and the starch gelatinization is incomplete, resulting in poor puffing effect.
2.3.2 Tempering Parameters:
Tempering parameters mainly include tempering temperature, tempering time and moisture content after tempering. The tempering temperature is generally 70～98℃. If the tempering temperature is too low, the materials cannot absorb water evenly, and the starch gelatinization is insufficient; if the tempering temperature is too high, the materials may be caked in advance, affecting the subsequent extrusion. The tempering time is generally 2-5 minuke, which should be adjusted according to the type of raw materials and the moisture content. The moisture content after tempering is 10%～27%, ʻokoʻa e like me ke ʻano o ka meaʻai holoholona. ʻo kahi laʻana, ʻO ka maʻamau o nā huahana puffed maloʻo ma hope o ka hoʻomaʻamaʻa ʻana 15%-20%, ʻoiai nā huahana semi-wet 22%-27%.
2.3.3 Nā ʻāpana Extrusion:
ʻO nā ʻāpana extrusion ka mea nui e pili ana i ka hopena puffing, ʻo ka nui me ka wikiwiki o ka wili, ka wela extrusion a me ke kaomi extrusion. ʻO ka wikiwiki o ka wiliwili maʻamau mai 100 i 600 rpm. ʻOi aku ka kiʻekiʻe o ka māmā wili, ʻoi aku ka nui o ka ikaika ʻāwili a me ka ikaika friction i loaʻa i nā mea, ʻoi aku ka kiʻekiʻe o ka extrusion wela a me ke kaomi, a ʻoi aku ka maikaʻi o ka hopena puffing. Eia naʻe, inā kiʻekiʻe loa ka māmā holo, pōkole loa ka manawa noho o nā mea i loko o ka lua extrusion, ka hopena i ka gelatinization starch piha ʻole a me ka hui ʻole ʻana; inā haʻahaʻa loa ka māmā holo, ʻaʻole i lawa ka ikaika ʻāwili a me ka ikaika friction, and the puffing effect is poor.
Extrusion temperature is generally controlled at 120～180℃, which is divided into three sections: ʻāpana hānai, melting section and homogenizing section. He haʻahaʻa ka mahana o ka ʻāpana hānai (70～90℃), which is mainly to prevent the materials from caking and ensure the smooth feeding; the temperature of the melting section is medium (120～150℃), which is mainly to promote the melting and plasticization of the materials; the temperature of the homogenizing section is higher (150～180℃), which is mainly to ensure the uniform mixing and full gelatinization of the materials.
Extrusion pressure is generally 2～10MPa. The pressure in the extrusion cavity is mainly determined by the compression ratio of the screw, the die hole size and the screw speed. The higher the extrusion pressure, the better the puffing effect, but if the pressure is too high, it will increase the energy consumption and wear of the equipment; if the pressure is too low, the puffing effect is poor, and the product is loose and easy to break.
2.3.4 Die Head Structure:
The die head structure mainly includes the number, shape and size of die holes. The shape of the die hole determines the cross-sectional shape of the puffed product, such as circular, square, triangular and other shapes. The size of the die hole determines the initial diameter of the product. The smaller the die hole size, the greater the extrusion pressure, a ʻoi aku ka maikaʻi o ka hopena puffing, but the production capacity will be reduced. The number of die holes affects the production capacity. The more the number of die holes, the higher the production capacity, but it is necessary to ensure that the pressure distribution is uniform, so as to avoid uneven puffing of the product.
3. Our Extruders: Advantages and Product Series for Pet Food Production
Ua lōʻihi mākou i ka noiʻi, development and production of food-grade extruders, and have developed a series of twin-screw extruders specially suitable for pet food production according to the characteristics of pet food processing and the needs of enterprises. Our extruders have the advantages of low operating cost, wide application range, advanced technology and reliable process control, which can meet the processing needs of various types of pet food and help enterprises improve production efficiency and product quality.
3.1 Main Advantages of Our Extruders
3.1.1 Low Lifetime Operating Cost:
We focus on the durability and economy of the equipment, and adopt high-quality materials and advanced manufacturing technology to ensure that the extruder has a long service life and low operating cost. The inner wall of the barrel is made of high-quality wear-resistant alloy steel, which has extremely strong wear resistance and can effectively resist the wear caused by the friction between the materials (especially the materials containing hard particles such as bone meal) and the barrel. This greatly extends the service life of the barrel, reducing the frequency of barrel replacement and the maintenance cost of the equipment.
Kahi mea hou aʻe, we also provide professional barrel wear measurement services. Our technical team will regularly or irregularly detect the wear of the barrel for customers, accurately judge the wear degree of the barrel, and provide professional suggestions on barrel replacement. This ensures that customers only replace the barrel when it is really needed, avoiding unnecessary waste and reducing the operating cost of the equipment. I ka manawa like, the screw of our extruder is also made of wear-resistant alloy steel, which has good corrosion resistance and wear resistance, and can adapt to the processing of high-fat, high-protein and high-salt raw materials.
3.1.2 Wide Application Range:
Our twin-screw extruders have strong adaptability and can meet the processing needs of various types of pet food, including dry puffed products, nā huahana semi-wet, huahana puffed palupalu, pet snacks and other products. The extruder is equipped with a high-torque drive system, variable screw speed and pressure variable control device, which provides excellent flexibility for customers, and can be adjusted according to different process requirements and raw material formulas to achieve the best processing effect.
The modular design of the extruder is another major feature that expands its application range. The screw, barela, die head and other components of the extruder adopt a modular design, which can be freely combined and replaced according to the customer’s specific application needs. ʻo kahi laʻana, when processing dry puffed products, customers can choose a screw with a high compression ratio and a die head with small die holes; when processing semi-wet products, they can choose a screw with a medium compression ratio and a die head with large die holes. This modular design not only improves the flexibility and adaptability of the equipment, but also reduces the cost of equipment transformation when customers adjust their product types.
3.1.3 Advanced Technology and Reliable Process Control:
Our extruders adopt the most advanced intelligent control technology, which can realize the precise control of the entire processing process, ensuring the consistency of the final product quality. The extruder is equipped with an intelligent formula memory system, which can store multiple sets of product formulas and processing parameters. When customers produce different products, they only need to call the corresponding formula and parameters, without repeated debugging, which not only saves time and improves production efficiency, but also maximizes the reduction of process errors and operator errors.
The intelligent control system also has real-time monitoring and alarm functions. It can monitor key parameters such as extrusion temperature, kaomi extrusion, ka māmā holo, material moisture content and production capacity in real time. If any parameter exceeds the set range, the system will issue an alarm prompt in time, and even automatically shut down the equipment if necessary, to avoid equipment failure and product quality problems. Kahi mea hou aʻe, the control system adopts a touch screen operation interface, which is simple and intuitive, oluolu e hana, and can reduce the professional requirements for operators.
3.1.4 Good Product Quality Stability:
Due to the advanced intelligent control system, uniform mixing and full plasticization of materials, the products processed by our extruders have stable quality. The particle size, kinona, paakiki, crispness and nutritional composition of the products are uniform, which can meet the strict quality requirements of pet food. I ka manawa like, the extrusion puffing process can effectively kill harmful bacteria in the raw materials (such as Salmonella, Escherichia coli), with a sterilization rate of more than 99%, ensuring the safety of pet food and reducing the risk of pet food safety incidents.
3.1.5 High Production Efficiency:
Our twin-screw extruders have high production efficiency, which is much higher than that of single-screw extruders. The production capacity of our extruders ranges from 100kg/h to 2000kg/h, which can meet the production needs of different scales of enterprises (liʻiliʻi, medium and large). The high-torque drive system and optimized screw design of the extruder can effectively improve the conveying capacity and plasticization efficiency of materials, reducing the residence time of materials in the extrusion cavity and improving production efficiency. Kahi mea hou aʻe, the self-cleaning function of the twin-screw extruder can reduce the time of equipment cleaning and maintenance, further improving production efficiency.
3.2 HTS BASIC Series Extruders: A Cost-Effective Choice for Pet Food Enterprises
The HTS BASIC series extruders are a cost-effective product series independently developed by us, which are specially designed for pet food processing enterprises with medium and small production scales or initial entry into the industry. This series of extruders uses medium-torque gearboxes from leading European manufacturers, which have the advantages of stable performance, kani haʻahaʻa, high efficiency and long service life. The medium-torque design can meet the processing needs of most pet food (such as dry puffed dog food, cat food, pet snacks), and at the same time, it has a reasonable price, which can help enterprises reduce the initial investment cost.
Ma keʻano o ka hoʻolālā hoʻolālā, the HTS BASIC series extruders adopt a twin-screw parallel structure, with a screw diameter ranging from 30mm to 65mm, and a compression ratio of 4～8, which can be adjusted according to the type of pet food. The barrel is made of wear-resistant alloy steel, me kahi mea hoʻomehana i kūkulu ʻia a me kahi ʻōnaehana hoʻomaha, which can accurately control the temperature of each section of the barrel. The screw is made of wear-resistant and corrosion-resistant alloy steel,经过 ka mīkini pololei a me ka mālama wela, which has good wear resistance and corrosion resistance.
Ma keʻano o nā palena hana, the HTS BASIC series extruders have a screw speed range of 150～500 rpm, which can be steplessly adjusted. The extrusion temperature can be controlled at 120～170℃, and the extrusion pressure can be controlled at 2～8MPa. The production capacity of this series of extruders ranges from 100kg/h to 500kg/h, which is suitable for medium and small-sized pet food processing enterprises. The extruder is equipped with a PLC control system and a touch screen operation interface, which is simple and easy to operate. It can realize the automatic control of the production process, such as automatic feeding, automatic temperature control, automatic pressure control and automatic cutting.
One of the biggest advantages of the HTS BASIC series extruders is that they can provide flexible options through different configuration combinations. Customers can choose different screw types, poʻo make, feeding devices, tempering devices and post-processing equipment according to their own product types, production capacity and budget, so as to form a production line suitable for their own needs. ʻo kahi laʻana, if a customer mainly produces dry puffed dog food, they can choose a screw with a high compression ratio, a circular die head, a high-efficiency tempering device and a drying cooling line; if a customer mainly produces pet snacks, they can choose a screw with a medium compression ratio, a special-shaped die head and a seasoning line.
Kahi mea hou aʻe, the HTS BASIC series extruders have the advantages of easy maintenance and low maintenance cost. The modular design of the equipment makes the replacement of components (such as screw, barela, poʻo make) more convenient and quick. Our after-sales service team will provide professional installation, commissioning and training services for customers, ensuring that customers can use the equipment smoothly. I ka manawa like, we also provide a complete range of spare parts supply services, which can quickly provide customers with the required spare parts, reducing the downtime of the equipment.
3.3 Selection Suggestions for Pet Food Extruders
When selecting extruders for pet food production, enterprises need to comprehensively consider their own production needs, product types, budget and other factors to ensure that the selected equipment can meet the actual production needs and bring maximum economic benefits. The following are some specific selection suggestions:
3.3.1 Determine the Type of Extruder According to Product Types:
Different types of pet food have different requirements for extruders. ʻo kahi laʻana, dry puffed products require extruders with high compression ratio, high extrusion temperature and pressure; semi-wet products require extruders with medium compression ratio and moderate extrusion temperature and pressure; pet snacks require extruders with good flexibility and adjustability. Enterprises should select the appropriate extruder type (twin-screw extruder is preferred) and configuration according to the main product types they produce.
3.3.2 Determine the Production Capacity of the Extruder According to the Production Scale:
Enterprises should select the extruder with appropriate production capacity according to their own production scale and market demand. If the production scale is small (daily output less than 1 ton), the HTS BASIC series extruders with production capacity of 100-300kg/h are suitable; if the production scale is medium (daily output 1-5 mau tona), the HTS BASIC series extruders with production capacity of 300-500kg/h are suitable; if the production scale is large (daily output more than 5 mau tona), it is recommended to choose our high-torque large-scale twin-screw extruders (production capacity more than 500kg/h).
3.3.3 Consider the Cost-Effectiveness of the Equipment:
The cost-effectiveness of the equipment is an important factor that enterprises need to consider. Enterprises should not only pay attention to the initial investment cost of the equipment, but also consider the long-term operating cost (such as energy consumption, maintenance cost, spare parts cost). Our HTS BASIC series extruders have the advantages of reasonable price, low energy consumption and low maintenance cost, which are cost-effective choices for medium and small-sized enterprises.
3.3.4 Pay Attention to the After-Sales Service of the Equipment:
The after-sales service of the equipment is crucial for the normal operation of the production line. Enterprises should select manufacturers with perfect after-sales service systems, which can provide professional installation, hoʻokahua, hoʻonaʻauao, maintenance and spare parts supply services. We have a professional after-sales service team, which can respond to customer needs in a timely manner and solve various problems encountered by customers in the use of equipment, ensuring the normal operation of the production line.
3.3.5 Consider the Flexibility and Expandability of the Equipment:
With the changes of market demand, enterprises may need to adjust their product types and production scales. No laila, when selecting extruders, enterprises should consider the flexibility and expandability of the equipment. Our extruders adopt a modular design, which can be freely combined and upgraded according to the needs of enterprises, improving the flexibility and expandability of the equipment, and reducing the cost of equipment transformation.
4. Application of Extrusion Equipment in Pet Food Production
Our twin-screw extruders (including HTS BASIC series) have been widely used in the production of various types of pet food, and have achieved good application effects. The following will introduce the specific application of our extrusion equipment in different types of pet food production, including process flow, equipment configuration and key technical points.
4.1 Application in Dry Puffed Pet Food Production
Dry puffed pet food is the most widely used product type in the pet food industry, and our HTS BASIC series extruders are especially suitable for its production. The process flow of dry puffed pet food production using our extruders is as follows:
Raw material preparation → mixing → tempering → extrusion puffing → cutting → drying → cooling → seasoning → packaging.
4.1.1 Hoʻomākaukau Mea Maka:
The raw materials of dry puffed pet food mainly include meat meal (chicken meal, beef meal, ʻai iʻa), kīʻaha (corn flour, wheat flour, rice flour), pāʻina soya, nā huaora, minerals, attractants and other additives. All raw materials need to be inspected and cleaned to remove impurities (such as stones, metals) and ensure the quality of raw materials. The raw materials are then crushed into powder with a particle size of 80-100 makaʻu, which is conducive to uniform mixing and full plasticization.
4.1.2 Huihui:
The crushed raw materials are sent to the mixer according to the formula ratio for uniform mixing. The mixing time is generally 5-10 minuke, ensuring that all raw materials and additives are evenly distributed. The mixer is equipped with a weighing device, which can accurately control the dosage of each raw material, ensuring the stability of the product formula.
4.1.3 Tempering:
The mixed raw materials are sent to the tempering device for tempering treatment. The tempering temperature is controlled at 80-95℃, the tempering time is 3-5 minuke, and the moisture content after tempering is 15%-20%. I ka wā o ke kaʻina hana ʻana, steam is injected into the tempering device to make the raw materials absorb water evenly, which is conducive to the subsequent extrusion puffing.
4.1.4 Extrusion Puffing:
The tempered raw materials are sent to the HTS BASIC series twin-screw extruder for extrusion puffing. The screw speed is controlled at 200-400 rpm, the extrusion temperature of the feeding section is 70-90℃, the melting section is 130-150℃, and the homogenizing section is 160-170℃. The extrusion pressure is controlled at 5-8MPa, and the compression ratio is 6-8. Ma lalo o ka hana o ka wela wela, ke kaomi kiʻekiʻe a me ka ikaika shear, the starch in the raw materials is fully gelatinized, the protein is denatured, and the materials are extruded from the die head to form puffed strips.
4.1.5 ʻoki ʻoki:
The puffed strips extruded from the die head are cut into short particles of uniform length by the rotary knife installed at the die head. The length of the particles is generally 3-8mm, which can be adjusted by changing the speed of the rotary knife.
4.1.6 Hoʻomaloʻo:
The cut puffed particles are sent to the drying equipment for drying. The drying temperature is controlled at 80-100℃, and the drying time is 20-30 minuke. The purpose of drying is to reduce the water content of the particles to 10%-12%, i mea e hooloihi ai i ke ola o ka huahana. The drying equipment can adopt belt dryer or fluidized bed dryer, which has the advantages of uniform drying and high efficiency.
4.1.7 Hoʻoluʻu:
The dried particles are sent to the cooling equipment for cooling. The cooling temperature is controlled at room temperature (20-25℃), and the cooling time is 10-15 minuke. Cooling can prevent the particles from caking and deteriorating, and ensure the crispness of the product.
4.1.8 Seasoning:
The cooled particles are sent to the seasoning equipment for seasoning. The seasoning can be spray seasoning or mixing seasoning. Common seasonings include chicken flavor, beef flavor, fish flavor and other attractants, as well as vegetable oil, salt and other additives. The seasoning amount is generally 2%-5% of the particle weight, which can be adjusted according to the taste needs of pets.
4.1.9 Hoʻopili ʻia:
The seasoned particles are sent to the packaging equipment for packaging. The packaging equipment can adopt automatic packaging machine, which can realize automatic weighing, bagging, sealing and labeling. The packaging specifications can be adjusted according to customer needs, such as 1kg/bag, 5kg/bag, 10kg/bag, etc. After packaging, the products are stored in a dry, hale kūʻai anuanu a me ka makani.
Key technical points: The key to dry puffed pet food production is to control the extrusion parameters and drying parameters. The extrusion parameters (ka māmā holo, mahana wela, kaomi) directly affect the puffing effect and product texture; the drying parameters (mahana wela, time) directly affect the water content and shelf life of the product. Our HTS BASIC series extruders have precise parameter control functions, which can ensure the stability of the extrusion process and the consistency of product quality.
4.2 Application in Pet Snack Production
Loaʻa i nā meaʻai meaʻai holoholona nā koi kiʻekiʻe no ka ʻono, helehelena a me ka hana, and our HTS BASIC series extruders, with their flexible configuration and precise parameter control, can well meet the processing needs of various pet snacks. Taking puffed dental snacks as an example, the process flow of production using our extruders is as follows:
Raw material preparation → mixing → tempering → extrusion puffing → cutting → drying → cooling → surface treatment → packaging.
4.2.1 Hoʻomākaukau Mea Maka:
The raw materials of puffed dental snacks mainly include corn flour, wheat flour, potato starch, meat meal, vegetable fiber, calcium carbonate and other additives. Iwaena o lakou, vegetable fiber and calcium carbonate are added to improve the hardness and texture of the product, helping to clean the pet’s teeth. The raw materials are crushed into powder with a particle size of 100-120 makaʻu, which is conducive to the formation of the product and the improvement of the texture.
4.2.2 Huihui:
The crushed raw materials are mixed uniformly in the mixer according to the formula ratio. The mixing time is 8-12 minuke, ensuring that the vegetable fiber, calcium carbonate and other additives are evenly distributed in the raw materials.
4.2.3 Tempering:
The mixed raw materials are sent to the tempering device for tempering treatment. The tempering temperature is controlled at 75-90℃, the tempering time is 2-4 minuke, and the moisture content after tempering is 18%-22%. The tempering process should ensure that the raw materials absorb water evenly, but not too much, so as to avoid the product being too soft.
4.2.4 Extrusion Puffing:
The tempered raw materials are sent to the HTS BASIC series twin-screw extruder for extrusion puffing. The screw speed is controlled at 250-450 rpm, the extrusion temperature of the feeding section is 70-85℃, the melting section is 120-140℃, and the homogenizing section is 150-160℃. The extrusion pressure is controlled at 4-7MPa, and the compression ratio is 5-7. The die head adopts a special-shaped die hole (such as cylindrical, spiral, striped), so that the extruded product has a special shape and texture, which is conducive to cleaning the pet’s teeth.
4.2.5 ʻoki ʻoki:
The extruded puffed products are cut into appropriate lengths by the rotary knife. The length of the products is generally 5-10mm, which can be adjusted according to the size of the pet.
4.2.6 Hoʻomaloʻo:
The cut products are sent to the drying equipment for drying. The drying temperature is controlled at 75-95℃, and the drying time is 15-25 minuke. The water content of the dried products is controlled at 12%-14%, which ensures that the product has a certain hardness and crispness, and can effectively clean the pet’s teeth.
4.2.7 Hoʻoluʻu:
The dried products are cooled to room temperature in the cooling equipment, which takes 8-12 minuke.
4.2.8 Surface Treatment:
The cooled products are subjected to surface treatment to improve the palatability and appearance of the product. Common surface treatments include spraying meat sauce, coating cheese powder, and dipping in edible oil. The surface treatment amount is generally 3%-6% of the product weight.
4.2.9 Hoʻopili ʻia:
The products after surface treatment are packaged by automatic packaging machine. The packaging should be sealed and moisture-proof to ensure the freshness and shelf life of the product.
Key technical points: The key to pet snack production is the design of the formula and the adjustment of extrusion parameters. The formula should meet the taste and functional needs of pets; the extrusion parameters should be adjusted according to the shape and texture requirements of the product, ensuring that the product has a good shape and texture. Our HTS BASIC series extruders have flexible parameter adjustment functions, which can meet the processing needs of different types of pet snacks.
4.3 Application in Semi-Wet Pet Food Production
Semi-wet pet food has a soft taste and good palatability, i kūpono i nā holoholona me ka hiki ʻole ke nau. Our HTS BASIC series extruders can also be used for the production of semi-wet pet food by adjusting the configuration and parameters. The process flow is as follows:
Raw material preparation → mixing → tempering → extrusion puffing → cutting → cooling → packaging.
4.3.1 Hoʻomākaukau Mea Maka:
The raw materials of semi-wet pet food mainly include meat meal, ʻai iʻa, kīʻaha, pāʻina soya, humectants (propylene glycol, sorbitol), preservatives, vitamins and minerals. The humectants are added to maintain the moisture of the product, and the preservatives are added to extend the shelf life of the product. The raw materials are crushed into powder with a particle size of 80-100 makaʻu.
4.3.2 Huihui:
The raw materials are mixed uniformly in the mixer according to the formula ratio. The mixing time is 6-10 minuke, ensuring that the humectants and preservatives are evenly distributed.
4.3.3 Tempering:
The mixed raw materials are sent to the tempering device for tempering treatment. Mālama ʻia ka mahana wela ma 85-98 ℃, the tempering time is 3-5 minuke, and the moisture content after tempering is 22%-27%. Pono ke kaʻina hana hoʻoheheʻe e hoʻopiha piha i ka wai i nā mea maka, i ʻono palupalu ka huahana.
4.3.4 Extrusion Puffing:
The tempered raw materials are sent to the HTS BASIC series twin-screw extruder for extrusion puffing. The screw speed is controlled at 150-300 rpm, ʻO ka mahana extrusion o ka ʻāpana hānai he 75-90 ℃, the melting section is 120-140℃, a ʻo ka ʻāpana homogenizing he 140-150 ℃. Hoʻopili ʻia ka kaomi extrusion ma 2-5MPa, and the compression ratio is 4-6. ʻOi aku ka haʻahaʻa o ka mahana extrusion a me ke kaomi ma mua o nā huahana puffed maloʻo, i mea e pale aku ai i ka huhū nui ʻana o ka huahana a hōʻoia i ka palupalu o ka huahana.
4.3.5 ʻoki ʻoki:
Hoʻokiʻoki ʻia nā huahana extruded i mau ʻāpana pōkole e ka pahi rotary, me ka lōʻihi o 4-8mm.
4.3.6 Hoʻoluʻu:
Hoʻomaʻalili ʻia nā huahana i ʻoki ʻia i ka mahana o ka lumi i loko o nā mea hoʻoluʻu, which takes 10-15 minuke. Hiki i ka hoʻoluʻu ke pale i ka hōʻino ʻana o ka huahana ma muli o ka wela kiʻekiʻe.
4.3.7 Hoʻopili ʻia:
Hoʻopili ʻia nā huahana ʻoluʻolu e ka mīkini pahu pahu. Vacuum packaging can effectively prevent the product from being oxidized and moldy, extending the shelf life of the product. The packaging specifications can be adjusted according to customer needs.
Key technical points: The key to semi-wet pet food production is the control of moisture content and the selection of humectants and preservatives. The moisture content of the product should be controlled at 25%-35%, and the humectants and preservatives should be selected according to the national food safety standards to ensure the safety of the product. Our HTS BASIC series extruders can accurately control the extrusion temperature and pressure, ensuring that the product has a stable moisture content and soft taste.
5. Solutions to Common Problems in Pet Food Extrusion Processing
In the actual production of pet food extrusion processing, enterprises often encounter various problems, such as uneven product particle size, poor puffing effect, product stickiness, product deterioration and other problems, which affect production efficiency and product quality. Based on our rich experience in pet food processing, we summarize the common problems, causes and solutions, hoping to help enterprises solve practical problems in production.
5.1 Uneven Product Particle Size
5.1.1 Nā kumu:
The main causes of uneven product particle size are: uneven speed of the rotary knife; uneven die hole size; uneven feeding speed; unstable screw speed; uneven mixing of raw materials.
5.1.2 Solutions:
Check and adjust the rotary knife, ensure that the rotary knife speed is uniform and the cutting edge is sharp; check the die head, replace the die head with uneven die hole size; adjust the feeding device, ensure that the feeding speed is uniform; check the screw drive system, ensure that the screw speed is stable; extend the mixing time, ensure that the raw materials are mixed uniformly.
5.2 Poor Puffing Effect
5.2.1 Nā kumu:
The main causes of poor puffing effect are: insufficient starch content of raw materials; too low or too high moisture content after tempering; too low extrusion temperature and pressure; too low screw speed; too large die hole size.
5.2.2 Solutions:
Adjust the product formula, increase the starch content of raw materials (to more than 20%); adjust the tempering parameters, control the moisture content after tempering at 10%～27%; increase the extrusion temperature and pressure, adjust the temperature of each section of the barrel and the screw speed; reduce the die hole size; check the screw wear, replace the worn screw.
5.3 Product Stickiness
5.3.1 Nā kumu:
The main causes of product stickiness are: too high moisture content of the product; too high extrusion temperature; too high protein content of raw materials; insufficient drying of the product.
5.3.2 Solutions:
Reduce the moisture content of the product by adjusting the tempering parameters and drying parameters; reduce the extrusion temperature of the homogenizing section; adjust the product formula, reduce the protein content of raw materials appropriately; extend the drying time, ensure that the water content of the product meets the standard.
5.4 Product Deterioration
5.4.1 Nā kumu:
The main causes of product deterioration are: insufficient sterilization during extrusion processing; too high water content of the product; poor packaging; improper storage.
5.4.2 Solutions:
Increase the extrusion temperature and pressure, ensure that the sterilization rate reaches more than 99%; control the water content of the product within the standard range; adopt vacuum packaging or nitrogen-filled packaging to improve the packaging effect; store the product in a dry, hale kūʻai anuanu a me ka makani, avoid high temperature and humidity.
5.5 Equipment Blockage
5.5.1 Nā kumu:
The main causes of equipment blockage are: too high moisture content of raw materials; too large particle size of raw materials; impurities in raw materials; too low screw speed; wear of screw and barrel.
5.5.2 Solutions:
Reduce the moisture content of raw materials; crush the raw materials to the required particle size; clean the raw materials to remove impurities; increase the screw speed; check the wear of screw and barrel, replace the worn components.
6. Our Service System: Supporting You to Achieve High-Quality Production
We not only provide high-quality extruders for pet food production, but also provide a complete set of service systems, from pre-sales consulting, equipment selection, formula design, to in-sales installation, hoʻokahua, hoʻonaʻauao, and after-sales maintenance, alakaʻi ʻenehana, to provide one-stop services for customers, helping customers solve various problems in production and achieve high-quality and efficient production.
6.1 Pre-Sales Service
Our pre-sales service team is composed of professional technical personnel with rich experience in pet food processing. We will conduct in-depth communication with customers to understand their product types, hiki ke hana, budget and other needs, and provide professional consulting services for customers. We will recommend the most suitable extruder model and configuration for customers, design personalized production line solutions, and provide detailed equipment parameters, process flow and cost budget, helping customers make scientific decisions.
Kahi mea hou aʻe, we also provide formula design services. Our technical team will design the most suitable product formula for customers according to the taste, nutrition and functional requirements of pet food, combining the processing characteristics of our extrusion equipment, helping customers improve the competitiveness of their products in the market. We can also provide raw material selection suggestions according to customers’ cost control needs, balancing product quality and production cost.
6.2 In-Sales Service
After the customer places an order, we will arrange professional technicians to provide on-site installation and commissioning services for the equipment. The installation and commissioning process will strictly follow the equipment installation specifications to ensure that the extruder and its matching auxiliary equipment (mixer, tempering device, mea maloo, seasoning machine, etc.) are accurately installed and connected. Technicians will debug all operating parameters of the equipment according to the customer’s product formula and production process requirements, and conduct trial production until the product quality meets the customer’s expected standards.
I ka manawa like, we provide on-site operational training for the customer’s production team, including equipment basic structure and working principle, daily operation steps, parameter adjustment skills, basic fault identification and handling. We will also provide a detailed operation manual and maintenance manual, and answer the questions raised by the operators one by one to ensure that the customer’s staff can proficiently operate and manage the equipment independently after the training.
6.3 Mahope o ke kuai ana
We have a perfect after-sales service system with a professional after-sales team and multiple service outlets to provide timely and efficient after-sales support for customers nationwide and even globally. We promise a rapid response mechanism: for customer’s equipment problems, we will give a solution within 24 hours after receiving the feedback; for on-site maintenance needs, our after-sales technicians will arrive at the customer’s production site as soon as possible according to the actual situation.
We provide regular equipment maintenance and inspection services for customers, including regular detection of key components such as screw, barrel and gearbox, lubrication and maintenance of the transmission system, and calibration of the control system parameters. For the barrel wear measurement service we have launched, our technicians will regularly detect the wear degree of the barrel inner wall with professional instruments, e hoʻopuka i kahi hōʻike kikoʻī lole, and put forward targeted replacement and maintenance suggestions to ensure that customers only replace components when necessary and reduce unnecessary production costs.
Kahi mea hou aʻe, we provide a long-term supply of genuine spare parts, with a large number of common spare parts (such as screw elements, poʻo make, cutting knives, sealing rings) in stock to ensure the rapid supply of spare parts and minimize the equipment downtime caused by component damage. We also provide technical upgrade services for the equipment, and can upgrade the control system, screw structure and other parts of the existing equipment according to the customer’s subsequent production expansion and product upgrade needs, so that the equipment can always adapt to the latest production requirements.
7. Complete Technical Parameters of Extruder Series for Pet Food Production
In order to meet the diverse production needs of pet food enterprises of different scales and product types, we have launched a full range of twin-screw extruder products for pet food processing, with the HTS BASIC series as the core, and extended HTS STANDARD and HTS PREMIUM series to adapt to small and medium-sized production, large-scale production and high-end customized production respectively. All series adopt the core design of twin-screw extrusion, with self-cleaning, high pumping efficiency and strong shear adaptability, and are perfectly matched with the characteristics of high viscosity and high fat of pet food raw materials. The following is the complete technical parameters table of each series:
Papakaukau 1: Technical Parameters of Excellence Pet Food Twin-Screw Extruder Series
表格
| Parameter Category | HTS BASIC Series (Entry/Mid-scale) | HTS STANDARD Series (Nui-nui) | HTS PREMIUM Series (High-end Custom) |
|---|---|---|---|
| Screw Structure | Parallel twin-screw, kawili pu ana | Parallel twin-screw, kawili pu ana | Parallel twin-screw, kawili pu ana |
| Anawaena oka (mm) | 30/45/65 | 80/95/110 | 65/80/95/110 (customizable) |
| Compression Ratio | 4:1 ~ 8:1 (hiki ke hoʻololi) | 5:1 ~ 10:1 (hiki ke hoʻololi) | 4:1 ~ 12:1 (customizable) |
| Ka māmā holo (rpm) | 150 ~ 500 (stepless frequency conversion) | 200 ~ 600 (stepless frequency conversion) | 100 ~ 700 (stepless frequency conversion) |
| Rated Torque (N·m) | 120 ~ 350 (European medium-torque gearbox) | 400 ~ 1200 (high-torque gearbox) | 350 ~ 1500 (imported high-precision gearbox) |
| Ka Mahana Extrusion (℃) | 70 ~ 170 (3-section temperature control) | 70 ~ 180 (5-section precise temperature control) | 60 ~ 190 (6-section intelligent temperature control) |
| Paʻi Extrusion (MPa) | 2 ~ 8 | 3 ~ 10 | 2 ~ 12 |
| Hana Hana (kg/h) | 100 ~ 500 | 500 ~ 2000 | 200 ~ 2500 (customizable) |
| Barrel Material | Wear-resistant alloy steel (nitrided treatment, hardness ≥60 HRC) | Wear-resistant alloy steel (bimetallic composite, hardness ≥65 HRC) | Imported wear-resistant alloy steel (bimetallic composite + laser cladding, hardness ≥70 HRC) |
| Screw Material | Wear-resistant alloy steel (nitrided treatment) | Wear-resistant alloy steel (bimetallic composite) | Imported wear-resistant alloy steel (customized according to raw materials) |
| Pūnaehana Mana | PLC + touch screen, basic formula memory (≤20 groups) | PLC + industrial touch screen, formula memory (≤50 groups) | Intelligent PLC + cloud touch screen, formula memory (unlimited, cloud storage) |
| ʻAno hoʻomehana | Electric heating + jacket water cooling | Electric heating + steam heating + jacket water cooling | Electric heating/steam heating (switchable) + jacket precise water cooling |
| Feeding Method | Single/double screw feeding (koho) | Twin-screw differential feeding + liquid feeding port (for oil/fat) | Multi-channel precision feeding (solid/liquid/grease, independent metering) |
| Self-Cleaning Performance | Standard self-cleaning | Enhanced self-cleaning | High-efficiency self-cleaning (customized screw gap) |
| Ka mana (kW) | 15 ~ 45 | 55 ~ 160 | 37 ~ 200 (customizable) |
| Overall Dimension (L×W×H, m) | 2.8×1.2×1.8 ~ 4.0×1.5×2.2 | 4.5×1.8×2.5 ~ 6.0×2.2×3.0 | 3.0×1.5×2.0 ~ 7.0×2.5×3.2 (customizable) |
| Kaumaha (t) | 0.8 ~ 2.5 | 3.0 ~ 8.0 | 2.0 ~ 10.0 (customizable) |
| Core Advantages | High cost-effectiveness, hana maʻalahi, suitable for initial pet food enterprises | Hoʻopuka kiʻekiʻe, haʻahaʻa ikehu hoʻohana, hana paʻa, suitable for large-scale mass production | High precision, strong customization, multi-functional, suitable for high-end pet food/snack customized production |
Key Parameter Explanation
Compression Ratio: The adjustable range is designed for different pet food types—low compression ratio (4:1~6:1) for semi-wet pet food, medium ratio (6:1~9:1) for dry puffed food, and high ratio (9:1~12:1) for high-density functional pet snacks.
Barela & Screw Material: The gradient material selection is to adapt to different raw material abrasiveness—HTS BASIC for ordinary meat meal/cereal raw materials, HTS STANDARD/ PREMIUM for raw materials containing bone meal, calcium powder and other hard particles, effectively extending the service life of core components.
Feeding Method: The multi-channel feeding port of HTS PREMIUM series can realize the precise addition of liquid raw materials (such as fresh meat slurry, vegetable oil) and grease, which is suitable for the production of high-fat, high-protein high-end pet food.
Pūnaehana Mana: The cloud storage function of HTS PREMIUM series can realize remote parameter adjustment and production data monitoring, which is convenient for enterprises to carry out intelligent production management.
8. Future Development of Pet Food Extrusion Technology and Our Layout
With the continuous upgrading of the global pet food industry, the pet food market is presenting new development trends such as high-endization, functionalization, naturalization and diversification, which puts forward higher and more stringent requirements for pet food extrusion processing technology and equipment.
8.1 Development Trends of Pet Food Extrusion Technology
Intelligent and Digital Processing: The integration of industrial Internet, artificial intelligence and extrusion equipment will become a mainstream trend. The extruder will realize real-time monitoring of the whole production process, automatic adjustment of parameters, and predictive maintenance of equipment through sensors and cloud computing, reducing human intervention and improving the stability and consistency of product quality.
Adaptation to Natural and High-quality Raw Materials: With the increasing demand for natural pet food, extrusion equipment needs to be optimized for processing fresh meat, fresh vegetables and other raw materials with high moisture and high activity, reducing the loss of nutritional components of raw materials in the extrusion process and retaining the original flavor and nutrition of raw materials.
High Efficiency and Energy Saving: Under the background of global energy conservation and emission reduction, pet food extrusion equipment will pay more attention to energy efficiency optimization, through the improvement of screw structure, heating method and transmission system, reducing unit energy consumption and improving production efficiency, realizing green production.
Customization and Diversification: The market demand for personalized pet food (such as pet food for different breeds, ages, physical conditions, and functional pet snacks) ke ulu nei, which requires extrusion equipment to have stronger customization and flexibility, and can quickly switch production processes and parameters to meet the production of multiple varieties and small batches of products.
8.2 Our Technical Layout and Future Planning
Facing the development trend of the pet food industry, we adhere to the concept of technological innovation driven by market demand, and continue to increase R & D investment in pet food extrusion equipment, focusing on the following aspects of research and development and optimization:
Intelligent Upgrading of Equipment: We will integrate more high-precision sensors and intelligent control algorithms into our extruder series, realize the automatic matching of extrusion parameters and product formulas, and launch a cloud management platform for production data, so that customers can monitor production status, analyze production data and optimize process parameters remotely.
Optimization of Raw Material Adaptability: We will develop a special screw structure and tempering process for fresh meat, high-fiber and other natural raw materials, reduce the shear force and heating time of raw materials in the extrusion process, and add a low-temperature puffing function to the high-end series to maximize the retention of the nutritional components and flavor of raw materials.
Energy Saving and Emission Reduction Improvement: We will adopt more efficient transmission systems and heating methods, such as permanent magnet synchronous motors and heat recovery devices, to reduce the energy consumption of the equipment by 15% ~ 20% on the basis of the original; i ka manawa like, optimize the equipment structure to reduce noise and waste discharge, meeting the environmental protection production standards.
Expansion of Customization Capabilities: We will build a more flexible product customization system, and can customize the screw diameter, lākiō kōmi, feeding method and other parameters of the extruder according to the customer’s personalized production needs (such as special-shaped pet snacks, high-end functional pet food); i ka manawa like, we will develop more matching auxiliary equipment to form a fully automated production line from raw material mixing to finished product packaging.
Deep Integration of Technology and Service: We will build a pet food processing technology research and development center, combining equipment R & D with product formula research, and provide customers with integrated solutions of “mea lako + formula + kaʻina hana”; i ka manawa like, we will expand the online technical service channel, provide 7×24-hour online technical guidance and fault diagnosis, and further improve the efficiency of after-sales service.
9. Ka hopena
Pet food extrusion puffing technology is the core of modern pet food industrial production, and the performance of extrusion equipment directly determines the production efficiency, product quality and market competitiveness of pet food enterprises. As a professional provider of food-grade extrusion equipment, we have accumulated rich experience in the field of pet food processing, and launched a full range of twin-screw extruder products represented by the HTS series, which perfectly solve the processing difficulties caused by the high viscosity, high fat and diverse raw materials of pet food.
Our extruders have the advantages of low lifetime operating cost, wide application range, advanced technology and reliable process control, and are equipped with a complete one-stop service system from pre-sales to after-sales. The detailed and adjustable technical parameters of each series can meet the production needs of pet food enterprises of different scales and product types, from entry-level dry puffed food to high-end customized functional snacks.
I ka wā e hiki mai ana, with the continuous development of the pet food industry, we will continue to take technological innovation as the core, take customer demand as the guide, and constantly optimize and upgrade our extrusion equipment and service system, striving to provide more efficient, mālama i ka ikehu, intelligent and customized pet food processing solutions for global customers. We are willing to grow together with pet food enterprises, and contribute to the development of the pet food industry with high-quality equipment and professional services, creating more safe, nutritious and delicious pet food for pet families around the world.