"Polypropylene yog tsim los ntawm polymerization ntawm cov roj tom qab kub kub tawg ntawm cov roj av nyob rau hauv qhov kev txiav txim ntawm catalysts, raws li cov txheej txheem ua yeeb yaj kiab sib txawv tuaj yeem tau txais los ntawm cov yeeb yaj kiab sib txawv, feem ntau yog siv dav hauv cov hom phiaj BOPP, matte BOPP, pearl zaj duab xis, Thaum tshav kub kub-sealed BOPP, cam khwb cia CPP, tshuab moulding IPP, thiab lwm yam.
1 、 Lub hom phiaj dav dav BOPP zaj duab xis
BOPP zaj duab xis yog ua tiav kom lub amorphous ib feem los yog ib feem ntawm cov crystalline zaj duab xis yog stretched nyob rau hauv lub longitudinal thiab transverse cov lus qhia saum toj no lub softening point, thiaj li hais tias cov zaj duab xis nto cheeb tsam nce, lub thickness yog thinned, thiab lub gloss thiab transparency yog zoo heev. Nyob rau tib lub sij hawm, lub zog txhua yam, huab cua nruj, noo noo barrier thiab txias tsis kam yog zoo heev vim lub orientation ntawm stretched molecules.
Cov khoom ntawm BOPP zaj duab xis:
Lub zog tensile siab, siab modulus ntawm elasticity, tab sis tsis tshua muaj kua muag zog; zoo rigidity, zoo heev elongation thiab tsis kam rau bending qaug zog kev ua tau zoo; Thaum tshav kub kub thiab txias tsis kam yog siab, kev siv kub txog li 120 ℃, BOPP txias kuj tseem siab dua cov PP zaj duab xis dav dav; siab nto gloss, zoo pob tshab, haum rau ntau yam khoom ntim; BOPP chemical stability yog qhov zoo, ntxiv rau cov kua qaub uas muaj zog, xws li fuming sulfuric acid, nitric acid muaj cov nyhuv corrosive rau nws Ntxiv rau, nws yog insoluble hauv lwm cov kuab tshuaj, thiab tsuas yog qee cov hydrocarbons muaj cov nyhuv o ntawm nws; Cov dej tsis zoo, yog ib qho ntawm cov ntaub ntawv zoo tshaj plaws rau cov dej noo thiab noo noo, qhov nqus dej <0.01%; tsis zoo luam ntawv, yog li qhov saum npoo yuav tsum tau kho corona ua ntej luam ntawv, cov nyhuv luam ntawv zoo tom qab ua tiav; hluav taws xob zoo li qub, cov resin siv hauv kev tsim cov yeeb yaj kiab yuav tsum tau ntxiv rau tus neeg sawv cev antistatic.
2. Matte BOPP
Cov txheej txheej saum npoo ntawm matte BOPP yog tsim los ua matte txheej, uas ua rau lub ntsej muag zoo nkauj zoo li daim ntawv thiab xis rau qhov kov. Matte nto txheej feem ntau tsis siv rau kev sib khi, vim tias muaj cov txheej txheem matte, piv nrog cov hom phiaj BOPP, muaj cov yam ntxwv hauv qab no: matte nto txheej tuaj yeem ua lub luag haujlwm shading, lub ntsej muag gloss kuj tseem txo qis; matte txheej tuaj yeem siv rau kev sib khi thaum tsim nyog; matte nto txheej yog du thiab zoo, vim hais tias cov nto roughened nrog anti-adhesive, zaj duab xis yob tsis yooj yim rau lo; matte zaj duab xis tensile lub zog yog me ntsis qis dua li cov yeeb yaj kiab dav dav, thermal stability tseem hu ua BOPP zoo tib yam me ntsis.
3. Pearlescent zaj duab xis
Lub pearlescent zaj duab xis yog ua los ntawm PP, CaCO3, pearlescent pigment thiab roj hmab hood modifier yog ntxiv thiab tov nrog bi-directional stretching. Raws li PP resin molecules yog stretched thaum lub sij hawm biaxial stretching txheej txheem, thiab CaCO3 hais yog stretched sib nrug los ntawm ib leeg, yog li tsim pore npuas, yog li cov pearlescent zaj duab xis yog ib tug microporous ua npuas ncauj zaj duab xis nrog ceev nyob ib ncig ntawm 0.7g / cm³.
PP molecule poob nws cov cua sov sealability tom qab biaxial orientation, tab sis tseem muaj qee yam kub sealability li roj hmab thiab lwm yam hloov, tab sis lub tshav kub foob lub zog yog tsawg heev thiab yooj yim los tsim kua muag, uas yog feem ntau siv nyob rau hauv lub ntim ntawm ice cream, popsicle, thiab lwm yam.
4, Thaum tshav kub kub sealing BOPP zaj duab xis
Ob chav sided heat-sealed zaj duab xis:
Cov yeeb yaj kiab no yog ABC qauv, A thiab C sab rau cov txheej txheem cua sov. Feem ntau yog siv los ua cov khoom ntim khoom noj, textiles, audio thiab video khoom, thiab lwm yam.
Single-sided tshav kub foob zaj duab xis:
Cov yeeb yaj kiab no yog ABB qauv, nrog A txheej ua cov txheej txheem cua sov. Tom qab luam tawm cov qauv ntawm B sab, nws yog laminated nrog PE, BOPP thiab txhuas ntawv ci los ua lub hnab, uas yog siv los ua cov khoom ntim qib siab rau zaub mov, dej haus, tshuaj yej, thiab lwm yam.
5, Flow-delayed CPP zaj duab xis
Cam khwb cia CPP polypropylene zaj duab xis yog ib yam uas tsis yog-stretch, uas tsis yog-directional polypropylene zaj duab xis.
CPP zaj duab xis yog tus cwj pwm los ntawm qhov siab pob tshab, zoo flatness, zoo kub tsis kam, muaj qee qhov kev hloov pauv yam tsis muaj kev poob qis, zoo thermal sealing zog. Homopolymer CPP muaj qhov nqaim ntawm cov cua sov sealing kub thiab siab brittleness, ua rau nws tsim nyog siv los ua ib txheej ntim zaj duab xis.
Co-polymer CPP muaj qhov sib npaug ntawm qhov ua tau zoo thiab tsim nyog raws li cov txheej txheem sab hauv ntawm cov yeeb yaj kiab sib xyaw. Tam sim no, cov dav dav yog co-extruded CPP, tuaj yeem siv tag nrho ntawm ntau yam polypropylene cov yam ntxwv ntawm kev sib xyaw ua ke, ua rau CPP kev ua tau zoo dua.
6, Tshuab IPP zaj duab xis
IPP tshuab tshuab feem ntau yog tsim los ntawm txoj kev down-blowing, PP yog extruded thiab tshuab hauv lub nplhaib tuag lub qhov ncauj, tam sim ntawd tom qab pib cua txias los ntawm lub nplhaib cua, zoo li dej txias txias, qhuav thiab dov, cov khoom tiav yog lub tog raj kheej zaj duab xis, uas tseem tuaj yeem txiav los ua ib daim ntawv zaj duab xis. Blown IPP muaj cov pob tshab zoo, zoo rigidity thiab yooj yim lub hnab ua, tab sis nws cov thickness uniformity tsis zoo thiab zaj duab xis flatness tsis zoo txaus.
Post lub sij hawm: Jun-08-2023