Dab tsi yog stretch zaj duab xis
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, cov nqi siab (zoo li PE piv, me me ntim cheeb tsam), thiab tsis muaj peev xwm ncab, PE stretch zaj duab xis tau maj mam phased tawm thaum nws tau tsim hauv tsev hauv 1994-1995. PE stretch zaj duab xis yog thawj zaug ua los ntawm EVA raws li cov khoom siv tus kheej nplaum, 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).
Ikev taw qhia
LLDPE stretch zaj duab xis yog feem ntau tshuab zaj duab xis, 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.
Cov txheej txheem ntau lawm
Ua los ntawm cov khoom siv txawv teb chaws polyethylene LLDPE resin thiab cov khoom siv tshwj xeeb nrog cov khoom ua kom tuab, nws tuaj yeem tsim cov yeeb yaj kiab uas siv tau los siv tes, hom siv tshuab siv, ua ntej ncab hom tshuab siv, UV tiv thaiv, tiv thaiv zoo li qub, thiab tiv thaiv xeb. Nws muaj qhov zoo hauv qab no:
1. Los ntawm kev siv ob txheej txheej co extrusion khoom, cov yeeb yaj kiab extruded tuaj yeem ua kom cov yam ntxwv ntawm txhua lub polymer, nrog rau cov pob tshab, lub zog tensile, thiab puncture tsis kam, mus txog qhov zoo tshaj plaws lub xeev ntawm lub melting point.
2. Muaj zoo tensile zog, zoo transparency, thiab uniform thickness.
3. Nws muaj zoo longitudinal extension, zoo rebound quab yuam, zoo transverse tsim kua muag kuj, thiab zoo heev self-adhesive overlap.
4. Nws yog ib puag ncig tus phooj ywg thiab cov khoom siv rov ua dua tshiab uas tsis muaj ntxhiab tsw, tsis muaj tshuaj lom, thiab tuaj yeem ntim ncaj qha rau cov khoom noj.
5. Nws tuaj yeem tsim cov khoom siv nplaum ib leeg, txo cov suab nrov thaum lub sij hawm winding thiab stretching txheej txheem, thiab txo cov plua plav thiab xuab zeb hais thaum thauj thiab khaws cia.
Tswj viscosity
Zoo adhesion xyuas kom meej tias lub ntim zaj duab xis thiab cov khaubncaws sab nraud povtseg ntawm cov khoom yog ruaj khov, thiab muaj ob lub ntsiab txoj kev kom tau adhesion: ib tug yog ntxiv PIB los yog nws masterbatch rau lub polymer; Lwm txoj hauv kev yog sib xyaw VLDPE. PIB yog cov kua nplaum uas tsis muaj pob tshab, thiab qhov sib ntxiv ncaj qha yuav tsum muaj cov cuab yeej tshwj xeeb lossis kev hloov kho cov khoom siv. Feem ntau, PIB masterbatch yog siv. Kev tsiv teb tsaws ntawm PIB muaj cov txheej txheem uas feem ntau siv peb hnub, thiab tseem cuam tshuam los ntawm qhov kub thiab txias. Thaum qhov kub thiab txias, viscosity muaj zog.
Thaum qhov kub thiab txias, nws tsis nplaum heev, tab sis tom qab ncab, lub viscosity tau txo qis heev. Yog li ntawd, nws yog qhov zoo tshaj los khaws cov yeeb yaj kiab ua tiav nyob rau hauv qhov kub thiab txias (qhov pom zoo cia qhov kub ntawm 15 degree thiab 25 degree). Sib xyaw nrog VLDPE, viscosity yog me ntsis tsis zoo, tab sis tsis muaj qhov tshwj xeeb rau cov khoom siv. Lub viscosity yog qhov ruaj khov thiab tsis tswj los ntawm lub sijhawm, tab sis nws kuj cuam tshuam los ntawm qhov kub thiab txias. Thaum qhov kub siab tshaj 30 degree, viscosity kuj siab, thiab thaum nws qis dua 15 degree, viscosity me ntsis tsis zoo. Qhov xav tau viscosity tuaj yeem ua tiav los ntawm kev kho tus nqi LLDPE hauv cov nplaum nplaum. Txoj kev no feem ntau yog siv rau peb txheej co extrusion.
Daim ntawv siv
1. Ntim ntim
Hom kev ntim khoom no zoo ib yam li lub thawv ntim ntim, qhov twg cov zaj duab xis qhwv ib ncig ntawm lub tais kom qhwv tag nrho ib ncig, thiab tom qab ntawd ob lub tshav kub grippers cua sov muab ob qhov kawg ntawm zaj duab xis ua ke. Qhov no yog qhov ntxov tshaj plaws ntawm kev siv cov yeeb yaj kiab ncab, uas tau coj mus rau kev tsim cov ntawv ntim ntau dua.
2. Kev ntim puv dav
Hom kev ntim khoom no yuav tsum muaj cov yeeb yaj kiab dav txaus los npog lub tais, thiab cov duab ntawm lub tais yog li niaj zaus, yog li nws tsim nyog rau kev siv cov yeeb yaj kiab tuab ntawm 17-35 μ m
3. Kev ntim khoom xuas tes ua
Hom ntim no yog hom yooj yim tshaj plaws ntawm kev ntim zaj duab xis ntim, qhov twg cov zaj duab xis yog mounted ntawm ib lub khib los yog tuav ntawm tes, tig los ntawm lub tais, los yog qhwv ib ncig ntawm lub tais. Feem ntau yog siv rau repackaging puas pallets thiab zoo tib yam pallet ntim. Hom ntim no muaj qhov nrawm nrawm thiab haum rau cov yeeb yaj kiab tuab ntawm 15-20 μ m;
4. Stretch zaj duab xis winding tshuab ntim
Qhov no yog cov feem ntau siv thiab siv ntau hom kev ntim khoom, uas yog tig los ntawm ib lub tais los yog zaj duab xis nyob ib ncig ntawm lub tais, thiab zaj duab xis yog tsau rau ntawm lub bracket thiab tuaj yeem txav mus los. Cov ntim no muaj peev xwm loj, kwv yees li 15-18 daim hlau ib teev. Lub thickness ntawm zaj duab xis yog hais txog 15-25 μ m;
5. Kab rov tav mechanical ntim
Sib txawv ntawm lwm yam ntim, nws yog qhwv ib ncig ntawm cov khoom nrog ib zaj duab xis, haum rau ntim cov khoom ntev xws li ntaub pua plag, boards, fiberboards, profiled cov ntaub ntawv, thiab lwm yam;
6. Ntim ntawm cov ntawv raj
Qhov no yog ib qho ntawm cov kev siv wrapping zaj duab xis tshiab, uas yog qhov zoo dua li siv wrapping zaj duab xis rau cov ntawv ntim cov raj yas qub. Qhov tsim nyog zaj duab xis thickness yog 30-120 μ m;
7. Ntim cov khoom me me
Qhov no yog qhov tseeb ntim daim ntawv ntawm wrapping zaj duab xis, uas tuaj yeem txo cov khoom siv thiab txo qhov chaw cia ntawm pallets. Hauv cov teb chaws txawv teb chaws, hom ntim no yog thawj zaug hauv xyoo 1984, thiab tsuas yog ib xyoos tom qab, ntau cov ntawv ntim zoo li no tau tshwm sim hauv khw, uas muaj peev xwm zoo. Haum rau zaj duab xis thickness ntawm 15-30 μ m;
8. Ntim ntawm cov kav dej thiab cov kav dej
Qhov no yog ib qho piv txwv ntawm daim ntawv thov ntawm stretch film nyob rau hauv tshwj xeeb teb. Cov khoom ntim tau nruab rau ntawm qhov kawg ntawm cov kab ntau lawm, thiab lub siab tsis siv neeg stretch zaj duab xis tuaj yeem tsis tsuas yog hloov daim kab xev los khi cov khoom, tab sis kuj muab kev tiv thaiv. Cov thickness siv tau yog 15-30 μ m.
9. stretch daim ntawv ntawm lub tais mechanism ntim
Lub ntim ntawm cov zaj duab xis stretch yuav tsum tau ncab, thiab cov ntaub ntawv stretching ntawm lub tais txhua yam ntim muaj xws li ncaj stretching thiab pre stretching. Pre stretching tuaj yeem muab faib ua ob hom: cov menyuam ua ntej ncab thiab hluav taws xob ncab.
Direct stretching yog cov txheej txheem ntawm stretching ntawm lub tais thiab zaj duab xis. Txoj kev no muaj qhov qis qis qis (li 15% mus rau 20%). Yog hais tias qhov sib piv stretching ntau tshaj 55% mus rau 60% thiab tshaj qhov qub yield point ntawm zaj duab xis, qhov dav ntawm zaj duab xis yuav txo qis, qhov kev ua haujlwm puncture kuj ploj, thiab cov yeeb yaj kiab tau yooj yim tawg. Thiab ntawm 60% elongation tus nqi, lub zog tensile tseem siab heev, uas yuav ua rau deformation ntawm lub teeb khoom.
Qhov twg mus yuav stretch film?
Txawm hais tias koj tab tom nrhiav yuav hauv ntau lossis rau kev siv tus kheej, Rau qhov zoo tshaj plaws stretch zaj duab xis, Shenzhen JYE packing cov ntaub ntawv Co., Ltd (JYE stretch zaj duab xis) uas nws kim heev nyob rau hauv kev lag luam, ua ke nrog lawv kev cog lus rau innovation, ua rau lawv ib tug ntseeg kev xaiv. Koj tuaj yeem ncav cuag ncaj qha ntawm +8613632970701los yog emailsales8@jyestretchfilm.com.mus nug txog kev yuav khoom thiab cov ntsiab lus ntxiv
