rau kev tsim cov yas ntim khoom yog polyethylene (PE), hu ua PE, uas yog ib qho polymer organic compound tsim los ntawm kev ntxiv polymerization ntawm ethylene. Polyethylene tau lees paub nyob rau hauv lub ntiaj teb no raws li cov khoom siv zoo tshaj plaws rau kev sib cuag zaub mov. Nws yog non-toxic, tasteless thiab odorless, thiab ua raws li kev cai ntim zaub mov. Polyethylene zaj duab xis yog lub teeb thiab pob tshab, muaj dej-pov thawj, tiv thaiv oxidation, acid thiab alkali tsis kam, nruab nrab huab cua nruj, thiab zoo heev kub sealability. Nws yog lub npe hu ua "Flower of Plastics" thiab yog cov khoom siv ntau tshaj plaws thiab tseem ceeb tshaj plaws ntawm cov yas ntim thiab luam ntawv. Khoom siv.
PVC
Polyvinyl chloride, hu ua PVC, muaj cov qauv molecular ntawm (CH2-CH2CL)n. Nws yog hom tseem ceeb tshaj plaws ntawm vinyl polymer thiab qhov thib ob loj tshaj plaws yas ntau yam hauv ntiaj teb tom qab polyethylene. Nws cov khoom tsim tawm hauv tsev yog qhov loj tshaj plaws ntawm cov yas. ces occupies thawj qhov chaw. Hauv kev lag luam luam ntawv, polyvinyl chloride xim calendered zaj duab xis thiab pob tshab glazing zaj duab xis feem ntau yog siv los ua cov ntim thiab kho kom zoo nkauj ntawm cov ntaub ntawv, folders, daim pib, thiab lwm yam.
shrink zaj duab xis
Shrinkfilm yog ib qho thermoplastic zaj duab xis uas yog ncab thiab taw qhia thaum lub sij hawm tsim khoom thiab shrinks thaum nws raug kho nrog cua kub los yog irradiated nrog infrared rays thaum siv. Tom qab kev kho cua sov, zaj duab xis yog nruj nreem qhwv rau ntawm cov khoom ntim, lub zog shrinkage ncav cuag nws cov nqi siab tshaj plaws thaum lub caij txias, thiab tuaj yeem khaws cia rau lub sijhawm ntev.
Tsawg-density polyethylene
Tsawg-density polyethylene , lossis LDPE luv luv, yog qhov siv ntau tshaj plaws hauv cov ntim yas thiab luam ntawv hauv ntau lub tebchaws. Lub ntiajteb txawj nqus yog 0.92 ~ 0.93 thiab tuaj yeem ntab hauv dej. Nws muaj crystallinity tsawg (60%) thiab bulk polymerization tshwm sim ntawm lub siab ntawm 1000 txog 3000kg / C㎡, yog li nws tseem hu ua high-pressure polyethylene . Ntawm 23 degree, qhov ceev yog nyob ib ncig ntawm 0.92. Nws muaj qhov tsis zoo calendering formability thiab tsim nyog rau kev ua cov yeeb yaj kiab tubular los ntawm tshuab moulding. Haum rau kev ntim khoom noj, ntim khoom fiber ntau, thiab ntim cov khoom siv tshuaj txhua hnub. Biodegradable hnab yas logo
High-density polyethylene
High density polyethylene, HDPE luv luv. Qhov ceev yog {{0}}.941 ~ 0.965g / cubic centimeter. Nws yog tsim los ntawm low-pressure polymerization, yog li nws tseem hu ua low-pressure polyethylene . Nws yog milky dawb, qhia tsis zoo gloss. Cov yeeb yaj kiab tuaj yeem ua tiav los ntawm tshuab moulding thiab T-tuag extrusion. Nws yog kub-resistant, retort-resistant, txias-resistant thiab khov-resistant, muaj zoo noo noo-pov thawj, roj-pov thawj, thiab insulating zog, tsis yooj yim puas, thiab yog ob zaug li muaj zog li LDPE. Hais lus yooj yim heev. Nws muaj cov khoom zoo li cov ntawv zoo thiab hu ua "paper zoo li yas zaj duab xis".
polypropylene zaj duab xis
Biaxially oriented polypropylene zaj duab xis, tseem hu ua biaxially oriented polypropylene zaj duab xis , lus Askiv abbreviation code BOPP, yog tus cwj pwm los ntawm stretch molecular orientation, txhua yam muaj zog, folding zog, huab cua ceev, thiab noo noo-pov thawj barrier zog uas zoo tshaj rau cov yas zaj duab xis. Piv nrog cellophane raws li cheeb tsam tsev, chav tsev nqi qis dua cellophane. Vim tias cov yeeb yaj kiab zoo li no muaj qhov pom tseeb zoo, cov xim luam tawm tom qab luam ntawv sab hauv yog qhov tshwj xeeb tshaj yog ci thiab zoo nkauj, thiab nws yog ib qho tseem ceeb hauv cov khoom siv rau cov khoom ntim yas sib xyaw.
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