Feem ntau cov thermoplastics tuaj yeem raug tshuab zaj duab xis ntau lawm nrog tshuab molding, tshuab molding yas zaj duab xis yog nyem rau hauv ib lub raj nyias, tom qab ntawd tawm tsam nrog cov cua compressed los tshuab yas bulge, tom qab txias kom tiav qhov tsim ntawm tubular membrane cov khoom, qhov zoo ntawm zaj duab xis kev ua tau zoo ntawm taw qhia zaj duab xis thiab stretch zaj duab xis: lub zog yog zoo dua li stretch zaj duab xis, tshav kub sealing phem tshaj stretch zaj duab xis.
Muaj ntau ntau hom yeeb yaj kiab uas tsim los ntawm txoj kev tshuab moulding, xws liTsawg ntom polyethylene (LDPE), linear polyethylene (LLDPE), polypropylene (PP), high density polyethylene (HDPE), nylon (PA), ethylene ethylene acetate copolymer (EVA), thiab lwm yam. .
1. Cov khoom siv raw uas tau xaiv yuav tsum yog cov khoom siv hauv cov yeeb yaj kiab qib polyethylene resin hais, uas muaj tus nqi tsim nyog ntawm tus neeg sawv cev smoothing, kom ntseeg tau tias qhov qhib ntawm zaj duab xis.
2 resin particle melting index (MI) tsis tuaj yeem loj dhau, melting Performance index (MI) loj dhau, viscosity ntawm molten resin me dhau, kev ua haujlwm yog nqaim, kev ua haujlwm tsis yooj yim rau kev tswj, resin zaj duab xis tsis zoo, tsis yooj yim rau kev ua yeeb yaj kiab;Tsis tas li ntawd, lub melting Performance index (MI) yog loj heev, tus txheeb ze molecular hnyav tis ntawm lub polymer yog nqaim heev, thiab lub zog ntawm cov zaj duab xis yog tsis zoo.Yog li, yuav tsum xaiv qhov ntsuas qhov ntsuas (MI) me me, thiab qhov sib txheeb molecular hnyav faib ntawm cov khoom siv dav dav, thiaj li ua tau raws li qhov yuav tsum tau ua ntawm cov yeeb yaj kiab, tab sis kuj kom paub meej cov yam ntxwv ntawm cov resin.Tshuab moulding polyethylene zaj duab xis feem ntau yog siv nyob rau hauv lub melting Performance index (MI) ntawm 2 thiab 6g / 10min polyethylene raw cov ntaub ntawv.
Tshuab moulding zaj duab xis txheej txheem yog kwv yees li hauv qab no:
Hopper loading khoom plasticizing extrusion → tshuab traction → cua nplhaib txias → herringlet splint → traction yob traction → corona kho → zaj duab xis winding
Post lub sij hawm: Aug-15-2022