Yuav ua li cas hais txog cov khoom ntawm stretch tshuab molding khoom?
Tom qab ncab, cov khoom siv zog, tsis tshav kub, transparency, ntws roughness, nruj thiab kev ua haujlwm tau zoo heev zoo tuaj.Qhov tshwj xeeb tshaj yog kev txhim kho ntawm qhov muaj zog, nthuav daim ntawv thov ntawm ntim thawv ntawm lub tshuab molding khoom; kuj tseem txuag tau cov ntaub ntawv raw, txo cov khoom hnyav tag nrho ntawm cov khoom, thiab ua kom cov competitiveness ntawm cov khoom.
Cov pob txha ntawm cov khoom tsis zoo yog ib qho tseem ceeb heev (piv txwv li, polyacrylonitrile, polyvinyl chloride (PVC) thiab polystyrene), ib feem ntawm crystallization yas (xws li polypropylene, polyethylene terephthalate), tab sis nws tus kheej muaj ib co transparency, tab sis tom qab ncab , cov transparency muaj ntau cuab kev nce, nto gloss thiab ntxiv txoj kev txhim kho yuav tau .Ntawm stretching, elastic modulus ntawm cov khoom loj heev, uas yog lig rau kev txhim kho ntawm lub siab nrog lub zog thiab axial mob heev yuav tsum tau ntim cov ntaub ntawv.
Los ntawm qhov kev pom ntawm ntim, qhov kev ua tau zoo tshaj plaws yog qhov ua tau rau cov pa roj carbon permissibility. Cov kab uas siv qee cov tshuaj crystalline, xws li dej pa, oxygen, carbon dioxide, thiab aroma, txo cov cim tom qab ncab, tab sis muaj ntau qhov txawv ntawm cov ntaub ntawv .Peb permeability ntawm polypropylene rau dej vapor yog tus qis. Tom qab ncav, qhov permeability txo me ntsis, tab sis nws tseem tsis tau piv nrog PVC, polyvinylidene chloride thiab ethylene terephthalate.