tono

Ko te nuinga o nga thermoplastics ka taea te pupuhi i te hanga kiriata me te pupuhi pupuhi, te pupuhi i te kiriata kirihou ko te pupuhi ki roto i te ngongo angiangi, ka whiua ki te hau pupuhi ki te pupuhi i te pupuhi kirihou, i muri i te whakamahana ki te whakaoti i te hoahoa o nga hua membrane tubular, tenei ahua o te mahi kiriata i waenganui. kiriata hāngai me te kiriata totoro: he pai ake te kaha i te kiriata totoro, he kino atu te hiri wera i te kiriata totoro.

He maha nga momo kiriata ka mahia e te tikanga pupuhi pupuhi, penei ipolyethylene kiato iti (LDPE), polyethylene linear (LLDPE), polypropylene (PP), polyethylene teitei (HDPE), nylon (PA), ethylene ethylene acetate copolymer (EVA), me etahi atu. I konei ka whakaatu poto matou i te tukanga whakaputa pupuhi o nga kiriata LDPE me te LLDPE e whakamahia ana. .

1. Ko nga rauemi mata kua tohua me whakatangihia nga matūriki kapia polyethylene reera kiriata, kei roto te nui o te kaihoko whakaene, hei whakarite i te whakatuwheratanga o te kiriata.

2 kapia matūriki rewa taupū (MI) e kore e taea e nui rawa, taupū rewa (MI) he nui rawa, he iti rawa te pokey o te kapia whakarewa, he kuiti te awhe tukatuka, he uaua ki te whakahaere i nga tikanga tukatuka, he kino te kiriata kapia, ehara i te mea ngawari ki te tukatuka hei kiriata;I tua atu, he nui rawa te taurangi rewa (MI), he iti rawa te tohatoha ira ngota o te polymer, he ngoikore te kaha o te kiriata.Na reira, me whiriwhiri taupū rewa (MI) he iti, me te tohatoha taimaha rāpoi whanaunga o whānui kapia rauemi mata, kia rite ki te whakatutuki i nga whakaritenga mahi o te kiriata, engari ano hoki ki te whakarite i te āhuatanga tukatuka o te kapia.Ka whakamahia te kiriata polyethylene pupuhi i roto i te taupū whakarewa (MI) i waenga i te 2 me te 6g/10min polyethylene raw rauemi.

Ko te ahua o te hanga kiriata pupuhi he penei:

Hopper utanga rauemi plasticizing Tangohanga → pupuhi traction → rangi ringi whakamatao → herringlet splint → traction roll traction → maimoatanga corona → kiriata awhiowhio