Njira Zopangira Mafilimu a PVC: Extrusion ndi Calender

Makanema a PVC amagwiritsidwa ntchito kwambiri pakunyamula zakudya, ulimi, komanso kuyika mafakitale. Extrusion ndi calendering ndi njira ziwiri zazikulu zopangira.

Extrusion: Kuchita bwino Kumakumana ndi Phindu la Mtengo

Malo opangira ma extruder ozungulira. Zida zophatikizika zimapulumutsa malo komanso zosavuta kuziyika ndikuzikonza. Pambuyo kusakaniza zipangizo molingana ndi chilinganizo, iwo mwamsanga kulowa extruder. Pamene wononga imazungulira pa liwiro lalikulu, zipangizo mofulumira pulasitiki ndi kukameta ubweya mphamvu ndi kutentha yeniyeni. Kenaka, amatulutsidwa mu mawonekedwe oyambirira a filimu kupyolera mu mutu wofa wopangidwa mwaluso, ndipo potsirizira pake amakhazikika ndi kupangidwa ndi odzigudubuza ozizira ndi mphete ya mpweya. Njirayi imapitilirabe ndikuchita bwino kwambiri.

Makulidwe a filimuyi amachokera ku 0.01mm mpaka 2mm, mogwirizana ndi zosowa zosiyanasiyana. Ngakhale yunifolomu yochepa mu makulidwe kuposa mafilimu a kalendala, imagwira ntchito pazinthu zomwe zili ndi zofunikira zochepa. Kugwiritsa ntchito zinthu zobwezerezedwanso kumachepetsa mtengo. Ndi ndalama zotsika mtengo komanso kugwiritsa ntchito mphamvu zamagetsi, zimapereka phindu lalikulu. Chifukwa chake, makanema owonjezera amagwiritsidwa ntchito makamaka paulimi ndi kuyika mafakitale, monga mafilimu owonjezera kutentha ndi makanema otambasula katundu.

Kalendala: Zofanana ndi Ubwino Wapamwamba

Zida za njira ya calendering zimapangidwa ndi ma roller otenthetsera ambiri olondola kwambiri. Zodziwika bwino ndi makalendala atatu, mipukutu anayi kapena asanu, ndipo zodzigudubuza ziyenera kusinthidwa mosamala kuti zitsimikizire kuti ntchitoyo ndi yolondola. Zidazo poyamba zimasakanizidwa ndi kneader wothamanga kwambiri, kenaka lowetsani chosakaniza chamkati cha plasticization yakuya, ndipo atatha kukanikizidwa mu mapepala ndi mphero yotseguka, amalowa mu kalendala. Mkati mwa kalendala, mapepalawo amatulutsidwa ndendende ndikutambasulidwa ndi ma roller angapo otentha. Poyang'anira kutentha ndi kusiyana kwa zodzigudubuza, kupatuka kwa makulidwe a filimuyo kungathe kukhazikika mkati mwa ± 0.005mm, ndipo kutsika kwapansi kumakhala kwakukulu.

Makanema a Callender PVC ali ndi makulidwe ofananirako, mawonekedwe amakina oyenera, mawonekedwe abwino kwambiri owoneka bwino, komanso kuwonekera kwambiri. Pakuyika chakudya, amawonetsa chakudya ndikuwonetsetsa chitetezo. Pazinthu zapamwamba zatsiku ndi tsiku ndi zopangira zamagetsi zamagetsi, khalidwe lawo lapamwamba limawapangitsa kukhala osankhidwa kwambiri.

Popanga mafilimu a PVC, kaya ndi ndondomeko ya calendering kapena extrusion process,PVC stabilizersthandizani kwambiri.Malingaliro a kampani TopJoy Chemical'smadzi barium-zincndicalcium-zinc stabilizersziletsa kuwonongeka kwa PVC pa kutentha kwambiri, kuonetsetsa bata zakuthupi, kumwazikana bwino mu dongosolo PVC, ndi kulimbikitsa dzuwa kupanga. Takulandilani kuti mutitumizire nthawi iliyonse ndikuyembekeza kuyanjana ndi inu!