Ukufaka izinto zokufaka uphawu nokufaka uphawu lokushisa ngale ndlela elandelayo;

1. Indlela yokufaka uphawu

Izindlela zokufaka uphawu kwephakheji zifaka ukubekwa uphawu okushisayo, ukubekwa uphawu okubandayo, ukubekwa uphawu okunamathelayo, njll. Ukufakwa uphawu kokushisa kubhekisa ekusetshenzisweni kwengxenye yongqimba lwangaphakathi lwe-thermoplastic esakhiweni sefilimu esiyinhlanganisela, esithambisa ukubekwa uphawu lapho kushisa, futhi siqinise lapho umthombo wokushisa isusiwe. Amapulasitiki wokufaka uphawu lokushisa, ukumbozwa kanye nokuncibilika okushisayo yizinto ezisetshenziswa ngokuvalwa kokushisa. Ukubekwa uphawu okubandayo kusho ukuthi kungavalwa ngokucindezela ngaphandle kokushisa. Ukumboza okubanda okuvame kakhulu ukugqokiswa komphetho okusetshenziswe onqenqemeni lwesikhwama sokupakisha. Ukubekwa uphawu okunamathelayo akuvamile ukuthi kusetshenziswe ekuphakelweni kwezinto eziningi, kusetshenziselwa kuphela izinto zokupakisha eziqukethe iphepha.

2. Izinto zokuvala ukushisa

(1)I-Polyethylene (PE) uhlobo olumhlophe olunamafutha amhlophe, aguquguqukayo futhi a-opaque aqinile. Cishe ayinambitheki, ayinabuthi futhi ilula ukudlula amanzi. I-PE macromolecular chain inokuguquguquka okuhle futhi kulula ukukugcizelela. Kuyinto enzima ekamelweni lokushisa. Njengempahla yokupakisha, ubungozi obukhulu be-PE ukuqina komoya ompofu, ukungena okuphezulu kwegesi nomhwamuko ophilayo, amandla aphansi nokumelana nokushisa; kulula ukwehliswa ukukhanya, ukushisa nesigxobo, ngakho-ke i-antioxidant nokukhanya nokuqina kokushisa kuvame ukufakwa emikhiqizweni ye-PE ukuvimbela ukuguga; I-PE inokumelana okuncane kokuqhekeka kwengcindezi kwezemvelo, futhi ayimelani nokugqwala kwe-h2s04 egxilile, i-HNO3 ne-oxidant yayo, futhi izokonakaliswa amanye ama-hydrocarbon e-aliphatic noma ama-hydrocarbon e-chlorine lapho evutha; ukusebenza kokuphrinta kwe-PE kubi, futhi indawo engeyona eye-polar, ngakho-ke ukwelashwa kwe-corona kufanele kwenziwe ngaphambi kokuphrinta nokubopha okomile ukuthuthukisa ukusondelana nokuxhuma okomile kwenkino yokuphrinta.

I-PE esetshenziselwa ukufaka uphawu lokushisa ikakhulukazi ifaka:
Density low density polyethylene (LDPE), eyaziwa nangokuthi ingcindezi ephezulu polyethylene;
Density high density polyethylene (HI) PE, eyaziwa nangokuthi ingcindezi ephansi polyethylene;
③ ukuminyana okuphakathi kwe-polyethylene (nu) PE :); i-polyethylene eqondile ephansi (LLDPE);
④ metallocene catalyzed polyethylene.

(2)Izici ze-cast polypropylene film (CPP) ezisetshenziselwa ukushisa uphawu lokushisa zihluke kakhulu kulezo ze-polypropylene ebhekiswe kubhiyaxially ngenxa yenqubo yayo ehlukile yokukhiqiza. Izinzuzo nobubi be-CPP zikhonjisiwe kokuqukethwe okufanele kwe- "polypropylene".

(3) I-PVC (efushaniswe njenge-PVC) iyi-resin engenambala, esobala futhi enzima ene-polarity eqinile yamangqamuzana namandla anamandla we-intermolecular, ngakho-ke inobulukhuni obuhle nebhodlela leplastiki eliqinile.

I-PVC ishibhile futhi iyahlukahluka kakhulu. Kungenziwa ngeziqukathi eziqinile zokupakisha, amabhamuza asobala namafilimu okupakisha aguquguqukayo nezinto zokwakha zepulasitiki ze-foam. Ngenxa yobuthi bayo nokubola kwayo, ukusetshenziswa kwayo kuyehla futhi kancane kancane kufakwa ezinye izinto.

(4) I-EVA (ethylene vinyl acetate copolymer) poly (ethylene vinyl acetate) (EVA) poly (ethylene vinyl acetate) (EVA) poly (ethylene vinyl acetate) (EVA) poly (ethylene vinyl acetate) (EVA) poly (ethylene vinyl acetate) ( EVA) poly (ethylene vinyl acetate) (EVA) poly (ethylene vinyl acetate) (eva-eva) poly (ethylene vinyl acetate) (EVA) poly (ethylene vinyl acetate) (EVA. EVA is a translucent or little Milky white solid prepared ngokwenza i-copolymerization ye-ethylene ne-vinylacetic acid uviniga. Izakhiwo zayo ziyashintsha ngokuqukethwe kwama-monomers amabili.Ngakho-ke, lapho kukhethwa imodeli ye-EVA, kufanele kunqunywe ngokuya ngokusetshenziswa kwayo, futhi kungasetshenziswa njengeplastiki, ukunamathisela okushisayo nokunamathisela .
I-EVA isetshenziswa kabanzi njengolwelwesi lwangaphakathi lwefilimu ehlanganisiwe ngenxa yokuqina kwayo okuhle namandla okushisa okushisa aphansi. Isetshenziselwa ukunamathela, ukumboza, ukumboza, ukufakwa kwekhebula kanye nesithwali sombala ngokunamathela kwayo okuhle (ukubola okuhle noma okuthile ngezinto eziningi ezibandayo nezingahlangene).

(5)I-PVDC (i-polyvinylidene chloride) i-PVDC ngokuvamile ibhekisa ku-copolymer ye-vinylidene chloride. I-polymer etholwe yi-polymerization ine-crystallinity ephezulu, indawo yokuthambisa ephezulu (185-200'c) futhi isondele ekushiseni kokubola (210-2250). Inokusebenzisana okungalungile ne-tackifier ejwayelekile, ngakho-ke kunzima ukubunjwa.
I-PVDC iyinto eqinile futhi esobala enamakristalu aphezulu kanye nokuluhlaza okwephuzi. Inezinga lokudlulisa eliphansi kakhulu emanzini agwinya igesi, igesi nephunga, futhi inokumelana okuhle kakhulu nomswakama, ukuqina komoya nokugcinwa kwephunga. Kuyinto enhle kakhulu yemingcele ephezulu yokuvimbela. Iyamelana ne-asidi, i-alkali kanye ne-solvents ehlukahlukene, ukumelana no-oyela, ukucindezela nokuzicisha ngokwakho.