Stretch zaj duab xis, tseem hu ua stretch zaj duab xis thiab tshav kub shrinkable zaj duab xis, yog thawj nyob rau hauv Tuam Tshoj los siv PVC ua lub hauv paus khoom, DOA raws li cov yas thiab tus kheej - nplaum nyhuv los tsim PVC stretch zaj duab xis. Nthuav zaj duab xis ntim tau maj mam tshem tawm thaum PE stretch zaj duab xis tau tsim nyob rau hauv Tuam Tshoj los ntawm 1994 txog 1995 vim muaj teeb meem ib puag ncig, tus nqi siab (qhov loj txheeb ze PE piv, tsawg dua chav ntim ntim), thiab tsis zoo stretchability. PE stretch zaj duab xis yog thawj zaug ua los ntawm EVA ua tus kheej - cov khoom nplaum, tab sis nws cov nqi yog siab thiab saj. Tom qab ntawd, PIB thiab VLDPE tau siv los ua tus kheej - cov khoom nplaum. Cov khoom siv hauv paus yog LLDPE, suav nrog C4, C6, C8 thiab metallocene PE (MPE).
Qhov kev faib ua feem ntawm cov linear polyethylene LLDPE cob thiab tackifier tshwj xeeb additives yog siv rau ntau lawm. Lub hnab ntim zaj duab xis tuaj yeem tsim tau ntau- ua haujlwm xws li tes- siv, ua haujlwm- hom tshuab, ua ntej- tshuab ncab, tiv thaiv- ultraviolet, tiv thaiv - zoo li qub thiab tiv thaiv - xeb. Qhwv zaj duab xis. Nws muaj qhov zoo hauv qab no: 1. Siv ob npaug - txheej co- cov khoom siv extrusion, cov yeeb yaj kiab uas txwv tsis pub tuaj yeem ua kom cov yam ntxwv ntawm txhua lub polymer, thiab nws cov pob tshab, lub zog tensile, thiab perforation kuj yog qhov zoo tshaj plaws thaum nws mus txog qhov melting point. xeev. 2. Nws muaj zoo tensile zog, zoo pob tshab thiab uniform thickness. 3. Nws muaj longitudinal extensibility, zoo resilience, zoo transverse tsim kua muag kuj thiab zoo heev self-adhesive lap joint. 4. Nws yog ib puag ncig zoo rau cov khoom siv rov ua dua tshiab, tsis qab los, tsis yog - tshuaj lom, thiab tuaj yeem ntim ncaj qha rau zaub mov. 5. Nws tuaj yeem tsim ib qho - cov khoom nplaum ib sab, txo cov suab nrov hauv cov txheej txheem winding thiab ncab, thiab txo cov plua plav thiab xuab zeb thaum thauj thiab khaws cia.
Lub stretch zaj duab xis muaj cov yam ntxwv ntawm siab tensile lub zog, loj elongation, zoo saj zawg zog thiab siab transparency. Lub hnab ntim zaj duab xis tuaj yeem siv dav hauv kev ntim khoom nruab nrab ntawm ntau yam khoom. Cov zaj duab xis ncab yog nplaum rau ntawm ib sab thiab tuaj yeem ncab thiab qhwv kom nruj. Cov khoom ntim khoom yuav tsis tawg, puas lossis muaj kuab paug thaum khaws cia thiab thauj mus los. Nyob rau tib lub sijhawm, vim tias muaj qhov pom tseeb siab, nws tuaj yeem txheeb xyuas tau yooj yim thiab txo cov kev faib khoom yuam kev. Nws kuj yog qhov yooj yim rau kev ntim khoom thiab kev thauj mus los, tshwj xeeb tshaj yog tsim rau ntim pallet. Mechanized loading thiab unloading kev khiav hauj lwm zoo heev txhim kho lub ntim thiab xa ceev ceev. Cov khoom no yog tsim los rau pallet ntim cov khoom, xws li hluav taws xob, khoom siv hauv tsev, tshuaj lom neeg, khoom siv hlau, tsheb qhov chaw, hlau thiab cable, khoom siv txhua hnub, khoom noj khoom haus thiab lwm yam lag luam.