Ntau tus niam tsev siv cov yeeb yaj kiab rau cov khoom noj khoom haus. Nws tuaj yeem qhwv cov nqaij, ntses, nceb, sausages thiab cov khoom noj khoom haus, tawv cov tawv nqaij, zaub, zaub thiab txiv hmab txiv ntoo. Cov pob no muaj ntau yam zoo dua cov tshuaj tua kabmob (cellophane). Cia peb kawm paub ntxiv txog cov khoom noj khoom haus, nws daim ntawv thov thiab cov khoom siv zoo.
Khoom ntawm ntim khoom noj khoom haus zaj duab xis
Zaj duab xis rau cov zaub mov ntim tsis tau txais cov koob npe xws li:
- pab tiv thaiv qhov kev nthuav tawm ntev loo;
- tiv thaiv nws los ntawm "winding" thiab ziab;
- Nws yog heev yooj yim mus leg, vim hais tias nws yog yooj yim unwound thiab securely tsau.
Xws li ib zaj duab xis ua tau ntawm polyethylene (PE) los yog polyvinyl chloride (PVC). Cov ntaub ntawv tom kawg yuav tsum ntim cov khoom rau lub sijhawm ntev cia. PVC muaj ib qho khoom lag luam ntawm kev cia cov pa tawm hauv cov yeeb yaj kiab, cov pa noo thiab carbon dioxide rau sab nraud. Vim li no microstructure ntawm zaj duab xis, cov khoom (tshwj xeeb yog bakery) tuaj yeem muab ntim kub, thiab cov ntaub ntawv no yuav tsis ua rau hauv cov yeeb yaj kiab.
Raws li cov yeeb yaj duab polyethylene, nws feem ntau pheej yig dua thiab tsim nyog rau lub sijhawm ntim cia, vim nws tsuas tiv thaiv tsis muaj pa thiab txawv teb chaws ntxhiab sab nraud. Tsis tas li ntawd, zaj duab xis muab khoom, tshwj xeeb yog cov zaub thiab txiv hmab txiv ntoo, ib tsos tshaj pom zoo thiab ci.
Ib lub tshav kub-resistant thiab frost-resistant zaub mov yog ua los ntawm ib tug polyolefin. Nws yog ntau ntom thiab ywj. Qhov yeeb yaj kiab no siv tau los txhuam cov khoom noj hauv lub chamber thiab npaj zaub mov hauv lub qhov cub microwave . Yog tias koj tsis paub tseeb tias puas muaj peev xwm ua kom sov khoom noj khoom haus, nco ntsoov: lub sijhawm no yuav tsum tau qhia rau hauv pob, nrog rau cov cua sov siab tshaj. Ntawm chav kawm, tag nrho cov hom zaj duab xis yog siv thiab tsim, feem, tsuas yog siv ib qho xwb. Zaub mov ntsws zaj duab xis yog siv tsis tas rau hauv lub neej txhua hnub, tab sis kuj nyob rau hauv cov lag luam luam, hauv cheeb tsam ntawm pej xeem catering, nyob rau hauv cov zaub mov kev lag luam, thiab lwm yam.