Yas kev cai luam ntawv ntim hnab sawv ntsug hnab nrog zipper

Lub hnab sawv ntsug, tseem hu ua lub hnab sawv ntsug, yog lub hnab ntim khoom hloov tau yooj yim uas tsim los sawv ntsug ntawm nws tus kheej. Nws yog feem ntau siv rau ntim ntau yam khoom xws li zaub mov, dej haus, khoom noj tsiaj, thiab khoom siv hauv tsev.

Lub hnab sawv ntsug yog ua los ntawm ntau txheej txheej ntawm cov ntaub ntawv laminated, uas muab cov khoom thaiv zoo heev los tiv thaiv cov ntsiab lus los ntawm ya raws, oxygen, thiab lub teeb. Cov ntaub ntawv siv tau muaj xws li cov yeeb yaj kiab yas, aluminium ntawv ci, thiab ntawv, nyob ntawm seb qhov yuav tsum tau ua ntawm cov khoom.

Ib qho ntawm cov yam ntxwv tseem ceeb ntawm lub hnab sawv ntsug yog nws lub peev xwm sawv ntsug ntawm lub khw muag khoom, ua tsaug rau nws cov hauv qab gusseted. Qhov no tsis tsuas yog ua rau nws pom kev txaus siab tab sis kuj tso cai rau kev khaws cia thiab tso saib tau yooj yim. Lub hnab ntim khoom feem ntau kaw nrog lub zipper rov qab los yog lub foob thaum tshav kub kub, ua kom cov khoom tseem tshiab thiab ruaj ntseg.