Kukonza ndi kugwiritsa ntchito filimu yocheperako ya PET filimu yochepetsetsa yamafuta ndi mtundu watsopano wazinthu zopangira zoziziritsa kukhosi.Polyester (PET) yakhala yabwino m'malo mwa filimu ya PVC (PVC) yotentha yotentha m'mayiko otukuka chifukwa cha makhalidwe ake monga kuchira mosavuta, zopanda poizoni, zopanda pake, zabwino zamakina, makamaka mogwirizana ndi chitetezo cha chilengedwe. label, thermoplastic film yakhala ikugwiritsidwanso ntchito pakupakira kunja kwa katundu watsiku ndi tsiku m'zaka zaposachedwa.Chifukwa izo sizingakhoze kokha kupanga ma CD katundu kupewa zimakhudza, mvula, chinyezi, dzimbiri, komanso kupanga mankhwala kusindikiza ma CD kaso kupambana owerenga, pa nthawi yomweyo akhoza bwino kusonyeza chithunzi chabwino cha opanga.Pakalipano, opanga ma CD ambiri amagwiritsa ntchitokusindikiza shrinkage filimum'malo mwa filimu yamwambo yowonekera.Chifukwa ndikusindikiza shrinkage filimuikhoza kupititsa patsogolo maonekedwe a mankhwala, imathandizira kutsatsa malonda, ingapangitse chizindikirocho m'mitima ya ogula kukhala ndi chidwi chozama.Thermally shrinkable pulasitiki filimu imayenera kukhala yokhazikika kutentha kutentha, kuchepa pamene kutentha (pamwamba pa vitrification kutentha), ndipo ndikoyenera kukhala ndi kutsika kwamafuta opitilira 50% mbali imodzi.Thermal shrinkage pulasitiki ma CD ma CD mbali ndi: zoyenera mandala, kusonyeza chithunzi cha katundu;Kunyamula zolimba, kukana bwino kubalalitsidwa;Kugonjetsedwa ndi mvula, chinyezi ndi mildew;Palibe kuchira, ali ndi ntchito yotsutsa-yonyenga.Thermo-shrink pulasitiki filimu nthawi zambiri ntchito yabwino chakudya, chakumwa, zipangizo zamagetsi, zinthu zitsulo, etc., makamaka shrinkable chizindikiro ndi ntchito yake yaikulu field.Copolymerization kusinthidwa thermotropic poliyesitala (PET) filmsPolyester (PET) filimu ndi mtundu wa crystallized zakuthupi.Kanema wamba wa PET amangopeza kutsika kwamafuta osakwana 30% mutalandira chithandizo chapadera.Kuti mupeze filimu ya polyester yokhala ndi shrinkage yotentha kwambiri, iyenera kusinthidwa.M'mawu ena, kuti akonze poliyesitala mafilimu ndi mkulu matenthedwe shrinkage, m'pofunika copolymerize wamba poliyesitala, mwachitsanzo polyethylene terephthalate.Kutentha kwakukulu kwa mafilimu a PET a copolymerized PET kumatha kufika 70%.Poliester wamba nthawi zambiri amapangidwa kuchokera ku terephthalic acid (PTA) ndi ethylene glycol (EG) kudzera mu esterification ndi condensation reaction, yomwe imakhala ya crystalline polima (kulankhula kwenikweni, ndi polima yomwe ilipo m'magawo a crystalline ndi amorphous).Otchedwa copolymerization kusinthidwa ndi kuyambitsa wachitatu kapena chigawo chachinayi kuwonjezera zigawo zikuluzikulu ziwiri za asidi terephthalic (PTA) ndi ethylene glycol (EG) nawo copolymerization, ndi cholinga kuwapanga kupanga asymmetric maselo. kapangidwe ndi kupanga amorphous PET copolymer.The monoma wachitatu amene anayambitsa angakhalenso dihydric mowa.Diol yodziwika kwambiri ndi 1.4 cyclohexane dimethyl alcohol (CHDM).M'kati mwa polyester copolymerization, kuwonjezera kwa CHDM kumakhudza kwambiri tg, TM ndi crystallization rate ya polyester.Ndi kuwonjezeka kwa CHDM okhutira, ndi kusungunuka kwa Pet PETG amachepetsa, galasi kusintha kutentha ukuwonjezeka, ndi copolymer amakhala amorphous dongosolo.Komabe, 1.4 Kuchulukitsa kwa cyclohexanedimethanol (CHDM) kuyenera kuyendetsedwa mkati mwazoyenera, ndipo kawirikawiri 30 ~ 40% ya CHDM ikulimbikitsidwa.Mtundu uwu wa PETG wosinthidwa ndi diol sungagwiritsidwe ntchito pokonza mafilimu otsika kwambiri, komanso kupanga mafilimu osindikizira kutentha ndi mafilimu owonekera kwambiri, ndi zina zotero, ndi ntchito zambiri. zomwe zafotokozedwa pamwambapa, binary carboxylic acid yomwe imagwiritsidwa ntchito kwambiri ndi m-phthalic acid (IPA).Kuphatikiza kwa IPA kungasinthe mawonekedwe olimba a polyester, kuwononga kukhazikika kwa unyolo wa macromolecular, kuchepetsa kuyanjana pakati pa ma macromolecules, ndikupanga ma cell a polyester kukhala ovomerezeka.Panthawi imodzimodziyo, chifukwa cha kukhazikitsidwa kwa IPA, poliyesitala imakhala yovuta kuti ikhale ndi nyukiliya ndi crystallize, ndipo ndi kuwonjezeka kwa kuchuluka kwa IPA yomwe inayambika, APET copolymers amasintha kuchoka ku crystallization kupita ku polima yopanda crystalline.Chifukwa cha kuchepa kwa mphamvu ya crystallization ya poliyesitala yosinthidwa APET, dera la amorphous limakhala lalikulu, kotero lingagwiritsidwe ntchito popanga mafilimu apamwamba kwambiri.Ndibwino kuti muwonjezere pafupifupi 20% IPA. Wachitatu kapena ngakhale wachinayi monoma anayambitsa akhoza kukhala diacid kapena diol.Pakati pawo, ma binary carboxylic acid ndi m-phthalic acid, malonic acid, succinic acid, adipate, sebacic acid, ndi zina zotero. imapangidwa ndi autochthonous acid (autochthonous acid).The PET copolymer anapezedwa ndi copolymerization ndi Glycolic amatchedwa PETG.Thermal shrinkage pulasitiki filimu zambiri zopangidwa amorphous pulasitiki processing, monga polystyrene, polyvinyl kolorayidi, PVDC ndi zina zotero.Kanema wocheperako wa polystyrene (PS) ali ndi mphamvu zochepa ndipo samalimbana ndi vuto, chifukwa chake sagwiritsidwa ntchito kawirikawiri.Ndipo polyvinyl kolorayidi (PVC) si abwino yobwezeretsanso mankhwala, musati kukwaniritsa zofunika zachilengedwe.Kumayiko ena, makamaka ku Ulaya, filimu ya pulasitiki ya polyvinyl chloride (PVC) yaletsedwa m'munda wolongedza, makamaka muzosunga zakudya.

COLD PEEL MATTE AMAMALIZA FILM YA PET YOTENGA NTCHITO YOSINDIKIZA