Multilayer coextrusion fim
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Danna FAQsQingdao Advanmatch Packaging's Multi-layer co-extruded composite film compoded gabaɗaya an raba shi zuwatushe Layer, aiki Layer da m Layer bisa ga aikin kowane Layer na fim din ba tare da la'akari da adadin adadin ba.
Tushen Layer: Gabaɗaya, ciki da waje yadudduka na fim ɗin da aka haɗa wanda yakamata ya sami kyawawan kaddarorin jiki da na injiniya, gyare-gyare da kaddarorin sarrafawa da Layer sealing thermal.Yana da kyakkyawan aikin rufe zafi da aikin walda mai zafi tare da ƙarancin farashi.A halin yanzu, yana da kyakkyawar goyon baya da tasiri mai riƙewa a kan aikin aiki da kuma mafi girman rabo a cikin ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar cuta.Tushen kayan shine yafi PE, PP, EVA, PET da PS.
Layer mai aiki:Layin aikin haɗin gwiwa na fim ɗin marufi shine mafi yawan shingen shinge, wanda gabaɗaya shine tsakiyar fim ɗin haɗaɗɗun nau'i-nau'i.Yawanci yana amfani da resins na shinge kamar EVOH, PVDC, PVA, PA, PET, da dai sauransu. Daga cikin su, manyan kayan shingen da aka fi amfani da su sune EVOH da PVDC, kuma PA da PET na kowa suna da kaddarorin shinge iri ɗaya, mallakar matsakaicin kayan shinge. .
EVOH
Ethylene-vinyl barasa copolymer wani nau'i ne na kayan aiki na polymer wanda ya haɗu da aiwatar da aikin ethylene polymer da shingen gas na ethylene barasa polymer.Yana da matukar haske kuma yana da kyalli mai kyau.EVOH yana da kyakkyawan shinge ga gas da mai.Ƙarfin injinsa, sassauci, juriya na lalacewa, juriya mai sanyi da ƙarfin saman yana da kyau kuma yana da kyakkyawan aikin sarrafawa.Abubuwan da ke shinge na EVOH ya dogara da abun ciki na ethylene.Kayayyakin da aka cika da kayan EVOH sun haɗa da kayan abinci, kayan kiwo, kayan nama, samfuran cuku, da sauransu.
Farashin PVDC
Polyvinylidene chloride shine polymer na chloride vinylidene (1,1-dichlorethylene).Yanayin lalata na homopolymer polyvinylidene chloride ya fi ƙasa da wurin narkewa, don haka yana da wuya a narke.Saboda haka, PVDC a matsayin marufi abu ne copolymer na vinylidene chloride da vinyl chloride wanda yana da kyau gas tightness, lalata juriya, da kyau bugu da zafi-sealing halaye.A farkon, an fi amfani da shi don kayan aikin soja.Amma an fara amfani da shi azaman fim ɗin adana abinci a cikin 1950s.Musamman marufi mai saurin daskarewa da sabo wanda aka ɓullo da shi da yawa tare da haɓaka fasahar tattara kayan zamani da saurin rayuwar mutanen zamani, juyin juya halin dafa abinci na microwave da tsawaita rayuwar abinci da magunguna wanda ya sanya aikace-aikacen PVDC ya fi shahara.PVDC za a iya sanya a cikin musamman bakin ciki fim, don haka rage adadin albarkatun kasa da kuma marufi halin kaka, Har yanzu rinjaye a yau.
Layer m
Saboda rashin kusanci na wasu resins na tushe da resins na aikin aiki, ya zama dole a sanya wasu yadudduka masu mannewa tsakanin waɗannan yadudduka guda biyu don yin rawar manne, ta yadda za a samar da fim ɗin "hadedde".Layer na manne yana amfani da guduro mai mannewa, wanda aka saba amfani dashi shine maleic anhydride grafted polyolefin da ethylene-vinyl acetate copolymer (EVA).
Halayen fina-finai da aka fitar da Multi-Layer:
1. Babban shamaki dukiya: Yin amfani da multilayer polymer maimakon monolayer polymerization iya ƙwarai inganta shamaki dukiya na fim da kuma cimma babban shãmaki sakamako na oxygen, ruwa, carbon dioxide, wari, da dai sauransu Musamman lokacin da EVOH da PVDC aka zaba kamar yadda. Kayayyakin shinge, isar da iskar oxygen da watsawar tururin ruwa ba shakka suna da ƙasa sosai.
2. Ƙarfi mai ƙarfi: Saboda babban zaɓi na fim ɗin multilayer a cikin aikace-aikacen kayan aiki, za a iya zaɓar nau'in resins iri-iri bisa ga aikace-aikacen kayan aiki masu amfani suna nuna cikakkun ayyuka na matakan daban-daban, don inganta aikin co. -extrusion film, irin su juriya mai, juriya danshi, high zafin jiki juriya dafa abinci, low zafin jiki sanyi daskarewa juriya.Ana iya amfani da shi don marufi, bakararre marufi da marufi mai ƙumburi.
3. Ƙananan farashi: Idan aka kwatanta da gilashin gilashin, marufi na aluminum da sauran marufi na filastik suna iya cimma wannan tasiri na shinge.A lokaci guda, fim ɗin haɗin gwiwa yana da fa'ida mafi girma a farashi.Misali, don cimma wannan tasirin shinge iri ɗaya, fim ɗin haɗin gwiwa na Layer bakwai yana da fa'ida mafi girma a cikin farashi fiye da fim ɗin haɗin gwiwa guda biyar.Saboda ƙirƙira mai sauƙi, farashin kayan fim ɗin da aka samar za a iya ragewa da 10-20% idan aka kwatanta da farashin busassun kayan fim da sauran fina-finai masu haɗaka.
4. Tsarin tsari mai sassauƙa: ɗaukar nau'ikan tsarin tsari daban-daban don saduwa da buƙatun tabbatar da ingancin samfuran daban-daban.
