1. Khoom siv
High-density polyethylene (HDPE): Cov khoom no yog nyias tab sis muaj zog dua, haum rau cov khib nyiab hauv tsev txhua hnub.
Low-density polyethylene (LDPE): Cov khoom no yog tuab dua thiab hloov tau yooj yim, haum rau kev thauj khoom hnyav dua lossis ntse dua.
2. Muaj peev xwm
Xaiv lub peev xwm tsim nyog raws li kev siv scenario:
Lub hnab khib nyiab me me: haum rau cov khib nyiab me me xws li chav dej thiab chav pw.
Lub hnab khib nyiab nruab nrab: haum rau cov thoob khib nyiab hauv chav ua noj thiab chav nyob.
Lub hnab khib nyiab loj: haum rau cov thoob khib nyiab sab nraum zoov, chaw ua haujlwm lossis chaw pej xeem.
3. Thickness
Lub hnab khib nyiab nyias: haum rau lub teeb khib nyiab, tsis muaj cov khoom ntse.
Lub hnab khib nyiab tuab: haum rau kev thauj khoom hnyav lossis cov khib nyiab ntse, tiv thaiv kev tawg thiab tawg.
4. Txoj kev sib khi
Drawstring sealing: yooj yim kom nruj thiab nqa, haum rau siv hauv tsev.
Adhesive strip sealing: yooj yim rau kev sib khi thiab tiv thaiv tsw ntawm kev sib kis.
Band sealing: haum rau cov xwm txheej uas cov hnab khib nyiab yuav tsum tau hloov ntau zaus.
5. Xim
Pob tshab los yog translucent: yooj yim pom cov khib nyiab sab hauv, haum rau siv hauv tsev thiab chaw ua haujlwm.
Dub los yog lwm yam xim opaque: haum rau lub sijhawm uas cov khib nyiab yuav tsum tau muab zais, xws li chav ua noj lossis chaw pej xeem.
6. Kev tiv thaiv ib puag ncig
Cov hnab khib nyiab degradable: Xaiv cov hnab khib nyiab uas ua los ntawm cov khoom zoo ib puag ncig yuav pab txo cov pa phem rau ib puag ncig.
Cov khoom siv rov ua dua cov hnab khib nyiab: Ua los ntawm cov yas siv dua tshiab, nws pab tiv thaiv ib puag ncig.
7. Loj
Xaiv lub hnab khib nyiab uas tsim nyog raws li qhov loj ntawm lub thoob khib nyiab: Qhov loj ntawm lub hnab khib nyiab yuav tsum yog me ntsis loj dua qhov loj ntawm lub thoob khib nyiab kom paub tseeb tias nws tuaj yeem npog tag nrho cov thoob khib nyiab thiab yooj yim kho.
8. Nqe
Xaiv raws li cov peev nyiaj: Raws li qhov kev pom zoo ntawm kev ua kom zoo, xaiv cov khoom siv nrog cov nqi siab thiab zam cov hnab khib nyiab uas pheej yig heev thiab tsis zoo.
9. Kev ua haujlwm thiab zoo
Kev tsim cov ntaub ntawv pov thawj: Nco ntsoov tias lub hnab khib nyiab muaj kev ua haujlwm zoo los tiv thaiv cov dej khib nyiab tawm.
tsim kua muag-pov thawj: Xaiv lub hnab khib nyiab nrog kev ua haujlwm tsim kua muag zoo, tshwj xeeb tshaj yog thaum thauj khoom hnyav lossis khoom ntse.
Los ntawm kev txiav txim siab zoo, xaiv lub hnab yas khib nyiab uas haum rau koj cov kev xav tau los xyuas kom meej qhov yooj yim thiab kev nyiam huv ntawm cov khib nyiab pov tseg.
