Dab tsi yog Wrapping Film

Wrapping zaj duab xis, tseem hu ua stretch zaj duab xis los yog tshav kub shrink zaj duab xis, yog qhov ntxov tshaj plaws hauv tsev tsim PVC wrapping zaj duab xis siv PVC ua cov khoom siv hauv paus thiab DOA ua cov yas yas nrog nws tus kheej nplaum. Vim muaj teeb meem ib puag ncig, tus nqi siab (zoo li PE piv, me me ntim cheeb tsam), thiab tsis zoo stretchability, PE stretch zaj duab xis tau maj mam phased tawm thaum nws tau tsim domestically hauv 1994-1995. PE stretch zaj duab xis yog thawj zaug ua los ntawm EVA raws li tus kheej-nplaum khoom, tab sis nws yog kim thiab tsw. Tom qab ntawd, PIB thiab VLDPE tau tsim los ua cov khoom nplaum rau tus kheej, nrog LLDPE ua lub ntsiab substrate, suav nrog C4, C6, C8, thiab metallocene PE (MPE).
Thaum ntxov, LLDPE stretch zaj duab xis yog tsuas yog cua tshuab, uas tsim los ntawm ib txheej mus rau ob-txheej thiab peb-txheej; Kev tsim cov LLDPE stretch zaj duab xis yog tsuas yog raws li txoj kev casting, vim hais tias cov casting kab ntau lawm muaj qhov zoo ntawm cov tuab tuab thiab siab transparency, uas tuaj yeem ua tau raws li qhov yuav tsum tau muaj kev nthuav dav ua ntej ncab. Vim tsis muaj peev xwm ntawm ib txheej txheej casting kom ua tiav ib leeg-sab adhesion, nws daim ntawv thov teb yog txwv. Ib txheej thiab ob txheej txheej casting muaj tsawg dua cov khoom xaiv thiab cov nqi tsim ntau dua li peb txheej txheej, yog li peb txheej co extrusion qauv tseem zoo tagnrho. High quality stretch zaj duab xis yuav tsum muaj siab transparency, siab longitudinal elongation, siab yield point, siab transverse tear zog, thiab zoo puncture.