Mazhinji thermoplastics anogona kupeperetswa kugadzirwa kwemafirimu nekuvhuvhuta, kuvhuvhuta kuumba epurasitiki firimu ndeyekusvina muchubhu yakatetepa, yobva yarova nemhepo yakatsikirirwa kuti ivhuvhute epurasitiki bulge, mushure mekutonhora kupedzisa dhizaini yezvigadzirwa zvetubular membrane, rudzi urwu rwekuita kwefirimu pakati. oriented firimu uye kutambanudza firimu: simba riri nani pane kutambanudza firimu, kupisa kuvharwa kwakaipisisa kupfuura kutambanudza firimu.
Kune akawanda marudzi emafirimu anogadzirwa ne blow molding nzira, sengelow density polyethylene (LDPE), linear polyethylene (LLDPE), polypropylene (PP), high density polyethylene (HDPE), naironi (PA), ethylene ethylene acetate copolymer (EVA), nezvimwe. .
1. Izvo zvakasarudzwa zvakasvibiswa zvinofanira kuputirwa firimu giredhi polyethylene resin particles, ine uwandu hwakakodzera hwekugadzirisa agent, kuve nechokwadi chekuvhura kwefirimu.
2 resin particle melting index (MI) haigoni kuva yakakura, yakanyunguduka index (MI) yakakura kwazvo, viscosity ye resin yakanyungudutswa iduku zvikuru, mararamiro ekugadzirisa akamanikana, mamiriro ekugadzirisa akaoma kudzora, resin firimu rakashata, hazvisi nyore kugadzira mufirimu;Pamusoro pezvo, iyo melting index (MI) yakakurisa, hukama hwema molecular huremu hwepolymer hwakanyanya kutetepa, uye kusimba kwefirimu kwakashata.Naizvozvo, inofanira kusarudza melt index (MI) idiki, uye yakaenzana molecular huremu kugovera kwehupamhi resin mbishi zvinhu, kuitira kuti isangane nekuita zvinodiwa zvefirimu, asiwo kuve nechokwadi chekugadzirisa maitiro eresin.Blow molding polyethylene firimu rinowanzo shandiswa mu melting index (MI) pakati pe2 ne6g/10min polyethylene raw materials.
Blow molding film process inenge seinotevera:
Hopper inorodha zvinhu zveplasticizing extrusion → kuvhuvhuta → mhepo mhete kutonhora → herringlet splint → traction roll traction → corona kurapwa → firimu mhepo
Nguva yekutumira: Aug-15-2022