Makhalidwe ndi ntchito za matumba onyamula vacuum

Chikwama chonyamula vacuum chinayamba mu 1940s, ndipomatumba onyamula vacuumamagwiritsidwa ntchito kwambiri kunyamula nyama.Mu 1957, kampani yotsogolera yaMalingaliro a kampani Qingdao Advanmatch Packaging Co., Ltd.matumba onyamula vacuum adagwiritsidwa ntchito mwalamulo ndikutumiza makina onyamula vacuum.Chakudya chothiridwa mu vacuum chili ndi mbiri iyi: cha m'ma 1965, nyemba zophikidwa ndi vacuum, zokhwasula-khwasula, zakudya zowotcha komanso zakudya zokazinga zidayamba;Pambuyo pa 1967, vacuum mmatumba zouma zouma nsomba, pickles, dumplings mazira, mazira cod fillets, mkate nthunzi, salimoni kusuta, salimoni kusuta, khofi, hamburgers, yophika mpunga, mpunga, nyama yowotcha, chakudya chophika kwambiri kutentha, meatballs, etc. kufotokozedwa.Ku Japan, kutchuka kwa ma CD a vacuum kumakhala koyambirira padziko lapansi, pomwe m'maiko akumadzulo, kupatula nyama yowuma ndi nsomba zowuma, kuyika kwazakudya zina ndikosowa.

Kuyika kwa vacuumali ndi izi:

1.High chotchinga machitidwe

Kanema wogwiritsidwa ntchito pakuyika vacuum idzakhala imodzi yokhala ndi kukana bwino kwa gasi, monga mafilimu okutira osiyanasiyana a PVDC, PVDC OPP, PVDC pet, PVDC nayiloni, filimu ya Eval, filimu ya nayiloni ndi filimu ya PET, yomwe ili yoyenera kunyamula zinthu zonyamula vacuum.Pafupifupi ma soseji onse okhala ndi vacuum amapangidwa pogwiritsa ntchito filimu yophatikizika yomwe imapangidwa ndi filimu ya nayiloni yotambasulidwa ya biaxially ndi polyethylene yotsika kwambiri.Filimuyi ili ndi nthawi yabwino yotsimikizira.Pafupifupi zinthu zonse zotsika, zovala zotsika ndi zotchingira pansi zimakhala ndi vacuum yodzaza ndi filimu ya PVDC ngati zida zopangira, zomwe zimatha kuchepetsa kuchuluka kwamayendedwe ndikusunga katundu.

2. kukana pinhole

Kuphatikiza pa kulingalira za zotchinga katundu wa zipangizo, chinthu chachiwiri pa kusankha zinthu ndi kapangidwe kamangidwe ndi kukana pinhole.Mapangidwe azinthu okhawo omwe ali ndi kukana bwino kwa pinhole amatha kupirira mikangano ndi mapini omwe amayamba chifukwa chopinda panthawi yodzaza ndi kusindikiza kutentha, kuyendetsa, kusungirako, kugulitsa ndi kugwiritsa ntchito.Pangani choyikapo cha vacuum kuti zisatseke mpweya.Zosungirako za vacuum zopangidwa ndi filimu ya nayiloni ya biaxial tensile ndi filimu ya polyethylene yotsika kwambiri yopangidwa ndi kampani yathu ili ndi kukana kwa pinhole, kulimba kolimba komanso katundu wotchinga kwambiri.