Mitundu ya Pulasitiki Extrusion

Pali mitundu yosiyanasiyana ya extrusion kutengera mtundu wa extrusion ikuchitika.Pano pali kuyang'ana pa mitundu yosiyanasiyana ya extrusion, ndi kusiyana kwa ndondomeko zofunika aliyense.

Mapepala Extrusion

Ma sheet extrusion, omwe amadziwikanso kuti filimu extrusion, amagwiritsidwa ntchito popanga mapepala apulasitiki ndi mafilimu, ndipo nthawi zambiri amasiyana ndi njira yoyambira yolumikizirana ndi kuzizira.M'malo mogwiritsa ntchito madzi osamba kuti aziziziritsa zomwe zatha, mapepalawo amazizidwa ndikukokedwa kupyolera mumagulu atatu kapena anayi.Kuwonjezera pa kuziziritsa mankhwala, odzigudubuza amagwiritsidwanso ntchito kudziwa makulidwe a mankhwala omaliza.

Kuwombedwa Mafilimu Extrusion

Kuphulika kwa filimu extrusion kumagwiritsidwa ntchito popanga zinthu monga matumba ogula apulasitiki.Njirayi ndi yofanana ndi njira yoyambira yotulutsira mpaka pomwe utomoni umalowa mukufa.Chovalacho ndi silinda yowongoka yokhala ndi khomo lozungulira.Utoto wosungunuka umakokedwa m'mwamba kuchokera pakufa ndi mipukutu iwiri yokwera pamwamba pa difa.Kusintha liwiro la nip rollers kudzasintha makulidwe a filimu yapulasitiki.Pafupi ndi kufa pamakhala mphete yozizirira yochokera ku mpweya, yomwe imaziziritsa zomwe zikuyenda m'mwamba.Mpweya umawomberedwa mukufa, kukulitsa mankhwala otulutsidwa.Filimuyi imatha kuphatikizidwa kapena kusindikizidwa, kudulidwa m'mawonekedwe, kapena kusindikizidwa ndi kutentha muzinthu zina.

Tubing Extrusion

Tubing extrusion imagwiritsidwa ntchito popanga zinthu monga udzu kapena machubu azachipatala.Njirayi ndi yofanana ndi njira yoyambira mpaka utomoni ufika pakufa.Pini (mandrel) imayikidwa mkati mwa kufa.Utoto wosungunuka umakankhidwira mukufa, ndikupanga mozungulira mandrel.Umu ndi momwe dzenje la chubu limapangidwira.Kuthamanga kwa mpweya kumagwiritsidwa ntchito kuyesa makulidwe a chubu.

Izi ndi zochepa chabe mwa njira zomwe zimagwiritsidwa ntchito popanga pulasitiki.Ubwino waukulu wa mitundu yonseyi ya pulasitiki extrusion ndondomeko kuti amapereka zosiyanasiyana zotheka geometric pa mitundu ina kupanga pulasitiki mawonekedwe.Kusiyanasiyana kwa maonekedwe ndi makulidwe omwe angapangidwe ndi aakulu, ndi malire okhawo omwe amapangidwa kuti azikhala ndi mbiri yopitilira.