Ingaba iPVDC ephezulu isithintelo ebhetyebhetye iimveliso zokupakisha isebenza njani?Icandelo lesi-2

2, Ukusetyenziswa okuthe ngqo kwePVDC inwebu edibeneyo eTshayina:
I-China iqalise ukusetyenziswa okusebenzayo kwe-PVDC resin ukususela ekuqaleni kwe-1980s.Okokuqala, ukuzalwa kwe-sausage ye-ham yazisa ifilimu ye-PVDC e-China.Emva koko iinkampani zaseTshayina zaphula i-blockade yase-United States kunye neJapan kule teknoloji kwaye yazisa iteknoloji yokucubungula kunye nezixhobo zefilimu ye-PVDC.Ngokukhula okuqhubekayo koqoqosho lwelizwe laseTshayina kunye nokuphuculwa kwezinto zabantu kunye nobomi benkcubeko, inqanaba lemfuno yokupakisha liyanda.Ukupakishwa okusebenzayo ngakumbi kusetyenziswa ngokubanzi kuzo zonke iinkalo zoqoqosho lwesizwe kunye nokuphila kwabantu.I-PVDC yinkokeli ekuphumezeniukupakishwa komqobo ophezuluUlwakhiwo lweendleko ezifanelekileyo kunye nokufuma okuthembekileyo, ioksijini kunye nesithintelo sevumba.

Ekubeni wonke umntu unolwazi oluninzi lwefilimu ye-PVDC ye-casing, apha siza kugxininisa kwiindlela zobugcisa kunye neempawu zefilimu edibeneyo ye-PVDC.Ifilimu edibeneyo yenza iintsilelo zento nganye, inika umdlalo opheleleyo ekusebenzeni kwayo okugqwesileyo, kwaye ineempawu ezingenayo into enye.Iindlela eziqhelekileyo ezidityanisiweyo zePVDC:

I-Coating, eyomileyo, i-solvent-free, i-hot-melt, i-co-extrusion, njl njl. Okwangoku, imveliso yasekhaya yefilimu edibeneyo ye-PVDC ithatha indlela yokugqoka, indlela eyomileyo, i-solvent-free kunye ne-co-extrusion method:

1) Ifilimu yokugquma iPVDC
I-PVDC yokugqoka i-latex isetyenziswe kumphezulu we-substrate (i-OPP, i-PA, i-PE, i-PET, njl.) ukwenza ifilimu edibeneyo yokuphucula ukusebenza kwe-gas barrier of substrate.Iimpawu zokusebenza:
Umqobo olungileyo;Ubukhulu bomaleko we-PVDC ngokuqhelekileyo yi-2 ~ 3um, kunye neendleko eziphantsi;Ayikwazi ukumelana nokupheka kobushushu obuphezulu.

2) I-PVDC i-laminated composite membrane
Iqulunqwe ngeefilimu ezininzi ezinomgca omnye, kwaye umaleko ngamnye ubophelelwe nge-adhesive.Inokwahlulwa ibe:
Ukomisa (i-solvent) i-lamination kunye ne-solvent-free lamination.

Iimpawu zokusebenza:
A. kunyeipropati yomqobo ophezulu kunye nesakhiwo esiguquguqukayo, inokuthi idibaniswe ne-BOPA, i-CPP, i-CPE, i-BOPP, i-BOPET, i-PVC kunye nezinye iifilimu (umzekelo, i-BOPP, i-PET, i-PA ingasetyenziselwa njengoluhlu lwangaphandle lokushicilela, i-PE, i-CPP kunye nezinye iziphumo ezilungileyo zokutywinwa kwe-thermal zingasetyenziswa. njengomaleko wokutywina we-thermal, ukuxhathisa kokugqobhoza okulungileyo kwe-PA kunokusetyenziswa njengomaleko wokuchasa ukugqobhoza, kwaye i-PVDC ingasetyenziswa njengomaleko okuthintela ukuvala ioksijini kunye namanzi).

B. Ukumelana nobushushu obulungileyo.Ingenziwa kwiqondo lobushushu eliphezulu kunye nobushushu obusezantsi obuxhathisayo kwisakhiwo sefilimu edibeneyo kunye nokuxhathisa ubushushu be-20 ℃ ~ 121 ℃;
Iimpawu ezilungileyo zoomatshini kunye nokutywinwa kobushushu, zilungele iintlobo ezahlukeneyo zoomatshini bokupakisha, ukuprintwa kombala, kunqunyelwe yifilimu enye, okwangoku ubukhulu bomaleko ngamnye abunakuba mncinci kakhulu kwaye inani leeleya ezihlanganisiweyo akufanele libe ninzi kakhulu (ngokubanzi hayi ngaphezulu. ngaphezu kweeleya ezi-5).

I-3) Ifilimu edibeneyo ye-PVDC ye-multilayer co-extruded
Iindidi zeplastikhi zikhutshelwa ngama-extruders amaninzi ngexesha elinye ngentloko yokufa ukuze zenze ifilimu ngolungelelwaniso olucwangcisiweyo, ukukhutshwa kwe-interlayer okucacileyo, ukubophelela okuqinileyo kunye nokuqina kwe-interlayer engaguqukiyo.Ngokweendlela ezahlukeneyo zokuyila, inokwahlulwa ibe yifilimu evuthelweyo ye-co-extrusion kunye nefilimu ephoswe nge-co-extrusion.Imathiriyeli ye-PVDC isetyenziswa ngokubanzi njengomaleko wesithintelo esiphakathi sefilimu ehlanganisiweyo.Iimpawu zokusebenza: umqobo ophezulu, ukucoceka okulungileyo, i-resin adhesive isetyenziselwa ukudibanisa, ukuphepha ingxaki ye-solvent residu kwi-composite eyomileyo (i-solvent-based), kwaye inokupheka ngaphantsi kwama-degrees angama-100;Ifilimu inokucutshungulwa ngokubunjwa kwe-thermal yesibini ngokusebenzisa ukuveliswa kwesebe lokuhamba;Kukho iileyile ezininzi ezinokuthi zenziwe, kwaye ngoku sele ifikelele kwi-13.Ubukhulu be-interlayer bungenziwa buncinci kakhulu, obunokugcina inani le-resin ngexabiso eliphezulu kwaye lifumane ukusebenza kweendleko zezoqoqosho.