mankhwala

Otsika kachulukidwe polyethylene kwa filimu yowumbidwa ndi mphepo,
Chithunzi cha LDPE, ldpe popanga mafilimu,

Low-density polyethylene (LDPE) ndi utomoni wopangidwa pogwiritsa ntchito njira yoponderezedwa kwambiri kudzera mu polymerization yaulere ya ethylene ndipo imatchedwanso "high-pressure polyethylene".Popeza unyolo wake wa molekyulu uli ndi nthambi zambiri zazitali komanso zazifupi, LDPE imakhala yocheperako kuposa polyethylene yapamwamba kwambiri (HDPE) ndipo makulidwe ake ndi otsika.Imakhala ndi kuwala, kusinthasintha, kukana kwabwino kwa kuzizira komanso kukana mphamvu.LDPE ndi yokhazikika pamakina.Ili ndi kukana kwabwino kwa ma acid (kupatula ma oxidizing acids), alkali, mchere, zinthu zabwino kwambiri zamagetsi zamagetsi.Kulowa kwake kwa nthunzi ndikotsika.LDPE imakhala ndi madzi ambiri komanso kutheka bwino.Ndi oyenera kugwiritsidwa ntchito mitundu yonse ya njira thermoplastic processing, monga jekeseni akamaumba, extrusion akamaumba, kuwotcherera, rotomolding, ❖ kuyanika, thovu, thermoforming, otentha-ndege kuwotcherera ndi kuwotcherera matenthedwe.

Kugwiritsa ntchito

LDPE imagwiritsidwa ntchito makamaka popanga mafilimu.Amagwiritsidwa ntchito kwambiri popanga filimu yaulimi (mulching filimu ndi filimu yokhetsedwa), filimu yonyamula (yogwiritsidwa ntchito ponyamula maswiti, masamba ndi zakudya zozizira), filimu yowomberedwa pakuyika zamadzimadzi (zogwiritsidwa ntchito ponyamula mkaka, msuzi wa soya, madzi, nyemba zamkaka ndi mkaka wa soya), matumba onyamula katundu wolemetsa, filimu yodzaza ndi shrinkage, filimu yotanuka, filimu yotchinga, filimu yopangira nyumba, filimu yopangira mafakitale ndi matumba a chakudya.

LDPE imagwiritsidwanso ntchito kwambiri popanga waya & chingwe chotchinjiriza sheath.Cross-linked LDPE ndiye chinthu chachikulu chomwe chimagwiritsidwa ntchito muzitsulo zopangira magetsi okwera kwambiri.

LDPE imagwiritsidwanso ntchito popanga zinthu zopangidwa ndi jakisoni (monga maluwa opangira, zida zamankhwala, mankhwala ndi zinthu zopakira chakudya) komanso machubu opangidwa ndi ma extrusion, mbale, zokutira zamawaya & chingwe ndi zinthu zamapulasitiki zojambulidwa.

LDPE imagwiritsidwanso ntchito popanga zinthu zopanda pake monga zotengera zakudya, mankhwala, zodzoladzola ndi mankhwala, ndi akasinja.

Phukusi, Kusungirako ndi Mayendedwe

Kusankha kwa polyethylene kuwomba-woumba filimu zakuthupi

1. The anasankha zopangira ayenera kuwomberedwa filimu kalasi polyethylene utomoni particles, munali kuchuluka koyenera kusalaza wothandizira,

Onetsetsani kutsegulidwa kwa filimuyo.

2 resin particle melt index (MI) sangakhale wamkulu kwambiri, melt index (MI) ndi yayikulu kwambiri, ndiye sungunulani utomoni.

The mamasukidwe akayendedwe ndi yaying'ono kwambiri, processing osiyanasiyana ndi yopapatiza, processing zinthu n'zovuta kulamulira, filimu kupanga katundu wa utomoni osauka, si kophweka.

Kupanga filimu;Kuphatikiza apo, melt index (MI) ndi yayikulu kwambiri, kugawa kwa polima wachibale ndikocheperako, filimu yopyapyala

Ndi osauka mu mphamvu.Chifukwa chake, kalozera kakang'ono ka melt index (MI) ndi kugawa kokulirapo kwa molekyulu ziyenera kusankhidwa

Sizingatheke kukwaniritsa zofunikira za filimuyo, komanso kuonetsetsa kuti utomoni umakhala wokhazikika.

Kanema wopangidwa ndi polyethylene wowomba nthawi zambiri amagwiritsa ntchito cholozera chosungunula (MI) mumtundu wa 2 ~ 6g/10min polyethylene

The zopangira.