PP zaj duab xis yog dab tsi?

COV KHOOM

Polypropylene lossis PP yog ib hom thermoplastic uas pheej yig thiab muaj qhov pom tseeb, ci ntsa iab thiab muaj zog tensile zoo. Nws muaj qhov melting point siab dua PE, uas ua rau nws tsim nyog rau cov ntawv thov uas xav tau kev tua kab mob ntawm qhov kub siab. Nws kuj muaj qhov tsis muaj zog thiab ci ntsa iab dua. Feem ntau, cov khoom siv cua sov ntawm PP tsis zoo li LDPE. LDPE kuj muaj zog dua thiab tiv taus qhov kub tsawg.

PP tuaj yeem ua los ntawm cov hlau uas ua rau muaj cov khoom tiv thaiv roj zoo dua rau cov ntawv thov uas xav tau lub sijhawm ntev ntawm cov khoom tseem ceeb.Cov yeeb yaj kiab PPzoo heev rau ntau yam kev siv hauv kev lag luam, kev siv khoom, thiab kev siv tsheb.

PP siv tau dua tshiab tag nrho thiab tuaj yeem rov ua dua tshiab rau ntau yam khoom siv rau ntau yam kev siv sib txawv. Txawm li cas los xij, tsis zoo li ntawv thiab lwm yam khoom cellulose, PP tsis yog biodegradable. Qhov zoo, PP pov tseg tsis tsim cov khoom lom lossis cov khoom phom sij.

Ob hom tseem ceeb tshaj plaws yog cov polypropylene uas tsis tau qov (CPP) thiab cov polypropylene uas tau qov ob sab (BOPP). Ob hom no muaj qhov ci ntsa iab, qhov muag pom kev zoo heev, kev ua haujlwm zoo lossis zoo heev ntawm kev kaw cua sov, tiv taus cua sov zoo dua li PE, thiab cov yam ntxwv zoo tiv thaiv dej noo.

Cov Yeeb Yaj Kiab Polypropylene Cast (CPP)

Feem ntau, cov Polypropylene uas tsis muaj kev taw qhia (CPP) uas tsis muaj kev taw qhia feem ntau pom tias muaj tsawg dua li cov polypropylene uas muaj kev taw qhia ob sab (BOPP). Txawm li cas los xij, CPP tau nce qib zuj zus ua ib qho kev xaiv zoo heev hauv ntau cov khoom ntim khoom yooj ywm ib txwm muaj thiab cov ntawv thov uas tsis yog ntim khoom. Cov yam ntxwv ntawm zaj duab xis tuaj yeem hloov kho kom tau raws li cov kev xav tau tshwj xeeb ntawm kev ntim khoom, kev ua tau zoo, thiab kev ua tiav. Feem ntau, CPP muaj kev tiv taus kev rhuav thiab kev cuam tshuam ntau dua, kev ua tau zoo dua ntawm qhov kub thiab txias thiab cov khoom kaw cua sov dua li BOPP.

Cov Yeeb Yaj Kiab Polypropylene Ob Sab (BOPP)

Cov polypropylene uas yog ob sab uas taw qhia los yog BOPP1 yog cov zaj duab xis polypropylene tseem ceeb tshaj plaws. Nws yog ib qho kev xaiv zoo heev rau cellophane, ntawv waxed, thiab ntawv txhuas. Qhov kev taw qhia no ua rau lub zog tensile thiab kev tawv, txo qhov elongation (nyuaj dua rau ncab), thiab txhim kho cov khoom siv optical, thiab txhim kho qee yam khoom siv vapor barrier. Feem ntau, BOPP muaj lub zog tensile siab dua, modulus siab dua (kev tawv), elongation qis dua, kev thaiv roj zoo dua, thiab tsis muaj pa phem dua li CPP.

DAIM NTAWV THOV

Zaj duab xis PP siv rau ntau yam kev siv ntim khoom xws li luam yeeb, khoom qab zib, khoom noj txom ncauj thiab qhwv zaub mov. Nws kuj tseem siv tau rau qhwv ntsws, daim kab xev, ntaub so ntswg thiab qhwv kom huv uas siv rau hauv kev siv kho mob. Vim tias PP tsuas muaj cov khoom thaiv roj nruab nrab xwb, nws feem ntau yog coated nrog lwm cov polymers xws li PVDC lossis acrylic uas txhim kho nws cov khoom thaiv roj zoo heev.

Vim yog qhov tsis muaj ntxhiab tsw, tiv taus tshuaj lom neeg thiab tsis muaj zog, ntau qib PP yog qhov tsim nyog rau kev siv ntim khoom raws li FDA cov cai.