Kusiyana ndi mawonekedwe pakati pa filimu yophatikizidwa ndi filimu yophatikiza

Pokonza filimuyi, mtundu wina wa zinthu zopangira umatulutsidwa pamtundu wina wa filimu yomwe yapangidwa kapena pamitundu yosiyanasiyana yamakanema omwe apangidwa ndi zomatira zimagwiritsidwa ntchito kugwirizana kuti apange mafilimu ambiri.Izi zimatchedwa mafilimu ophatikizika.Co-extruded filimuali ndi makhalidwe ambiri a filimu yophatikizika, koma pali kusiyana kumodzi, ndiko kuti, zigawo zonse za filimu yowonjezeredwa zimatulutsidwa nthawi imodzi, ndipo zigawozo zimagwirizanitsidwa ndi kusungunuka kotentha popanda ndondomeko ya lamination.

Zinthu za filimu yophatikizika nthawi zambiri zimakhala pulasitiki, koma mapepala, zojambula zachitsulo (nthawi zambiri aluminiyamu) kapena nsalu zitha kugwiritsidwanso ntchito.Magawo onse afilimu yowonjezeredwaamachotsedwa nthawi yomweyo, kotero sipadzakhala zojambulazo za aluminiyamu, mapepala ndi zinthu zina zopanda pulasitiki.

Mipikisano wosanjikiza co-extrusion chotchinga nembanemba ndi ntchito gulu filimuopangidwa pogwiritsa ntchito ma extruder angapo kuti atulutse utomoni wokhala ndi chotchinga chachikulu komanso kusungunula utomoni wina kudzera mukufa wamba.Multi-layer co-extrusion composite ndi njira yobiriwira yopangira zinthu, makamaka pamakampani omwe akupanga zakudya, zopangira zomwe zimagwiritsidwa ntchito nthawi zambiri zimakhala zovomerezeka ndi United States Food and Health and Safety Agency, ndipo zopangirazo zimaperekedwa chimodzimodzi kwa aliyense. wosanjikiza ndi payipi yapadera yoyendera.Palibe kukhudzana ndi zopangira ndi kuipitsa chilengedwe mu processing ndondomeko.wosanjikiza wake womaliza amapangidwa kusinthidwa LLDPE monga zopangira, amene si poizoni kwa chilengedwe, chakudya ndi thupi la munthu ndipo sizidzawoneka chikhalidwe youma pawiri, ndiko, otchedwa zosungunulira zotsalira chodabwitsa, popanda zinyalala kuipitsidwa kwa gasi;Zimasiyananso ndi kuphatikizika kowuma, kuphatikizika kopanda zosungunulira komanso njira yophatikizira yosanjikiza imodzi yokha, ndipo kumafuna kuumitsa ng'anjo yochizira, kotero kuti kugwiritsa ntchito mphamvu kumakhala kochepa.Komanso, Mipikisano wosanjikiza co-extrusion gulu ndondomeko alinso ubwino zotsatirazi.

(1) Njira yotsika mtengo yopangira ma multilayer co-extrusion composite imagwiritsa ntchito ma resin osiyanasiyana okhala ndi ntchito zosiyanasiyana.Njira imodzi yokha yopangira kuwombera ingagwiritsidwe ntchito popanga mafilimu opanga mafilimu ambiri, omwe angachepetse ndalama zopangira.Kuphatikiza apo, imathanso kuchepetsa magwiridwe antchito ofunikira a utomoni mpaka makulidwe ochepa, ndipo makulidwe ochepera a gawo limodzi amatha kufikira 2 ~ 3 μ m.Ikhoza kuchepetsa kwambiri kugwiritsa ntchito utomoni wokwera mtengo, motero kuchepetsa mtengo wazinthu.

(2) Ukadaulo wosinthika wamitundu ingapo wa co-extrusion ungafanane ndi zida zosiyanasiyana zosakanikirana zosiyanasiyana zomwe zimagwiritsa ntchito zida zonse zokhala ndi katundu ndi mawonekedwe osiyanasiyana nthawi imodzi.Sizina malire ndi zomwe zimagulitsidwa pamsika ndipo zimatha kukwaniritsa zosowa za nthawi zosiyanasiyana zolongedza.Zigawo zochulukira, m'pamenenso kamangidwe kake kamakhala kosavuta komanso kutsika mtengo.

(3) High composite performance co-extrusion composite process imaphatikiza zomatira zosungunuka ndi utomoni woyambira.Njirayi imakhala ndi mphamvu ya peel yayikulu yomwe nthawi zambiri imakhala 3N/15mm kapena kupitilira apo yomwe ili yoyenera kuyika zida zonse.Pazinthu zomwe zili ndi mphamvu zambiri za peel, utomoni wa thermosensitive ukhoza kuwonjezeredwa pagulu.Pakadali pano, mphamvu ya peel imatha kufika 14N/15mm, kapena kupitilira apo.

(4) Zinthu zophatikizika zamitundu ingapo zimatha kuphimba pafupifupi malo onse oyikamo, kuphatikiza chakudya, mankhwala a tsiku ndi tsiku, zakumwa, mankhwala, mafilimu oteteza komanso zinthu zakuthambo.Pakadali pano, zinthu zambiri zowuma zowuma ku China zatengera njira yolumikizirana kunja.Machubu otsukira m'mano omwe sangathe kupangidwa ndi njira youma yamagulu.Paper pulasitiki aluminiyamu kompositi mankhwala.Azamlengalenga ndi zinthu zina zimazindikirikanso ndi co-extrusion process.Ndi kafukufuku wozama komanso kusinthika kosalekeza kwa coextrusion composite resin, ukadaulo ndi zida, gulu lamitundu yambiri lidzakula mpaka kusiyanasiyana.