Dab tsi yuav tsum tau them sai sai rau thaum teem cov pwm kub?
Qhov kub ntawm lub tshuab pwm yuav tsum yog:
(1) cov khoom muaj kev ua tau zoo dua thiab ruaj ntseg zoo dua;
(2) luv mould voj voog;
(3) tsawg zog noj;
(4) tsawg dua pov tseg.
Txo rau PE tshuab moulding, pwm (feem ntau yog siv 15-30 ℃), kom txo lub sijhawm txias, siv tau pwm tsawg dua (5-15 ℃) .Txawm li ntawd, nyob rau lub caij ntuj sov siab thiab kub, pwm kub yog qis tshaj qhov dej nhiav ntawm rhiav, pwm cov kab noj hniav yuav condense, ua rau me ntsis, pockmarks thiab lwm yam kev txhawm rau ntawm cov khoom siv tawm.Thaum vim li no, peb yuav tsum sim ua kom txo cov av nyob ib ncig ntawm lub tshuab pwm kom paub meej tias qhov khoom muaj kev ua tau zoo nyob rau hauv lub sij hawm luv ua kom txias. Ntxiv mus, ntev npaum li cas txias tej zaum yuav ua rau muaj qhov tsis zoo ntawm qhov khoom, ua rau "khov" kev nyuab siab thiab warping ntawm cov khoom, tshwj xeeb tshaj yog thaum cov khoom phab ntsa thickness loj.
Rau cov yeeb yam hauv tshuab hlau, cov pwm yuav tsum tau siv nyob rau ntawm kub kub kom txhim kho cov khoom muag.
Dej muaj cua kub pauv thiab yog lub tso dej txias siv hauv tshuab pwm.Hard dej yuav tsum tau softened ua ntej yuav nkag tau rau hauv cov pwm txias channel, vim hais tias cov ziab channel tso cov nplai thiab cov khoom thaiv, uas yuav zoo heev kom txo cov cua sov hloov kev kawm.Rau qhov cov khoom siv hlau tshuab tuaj pwm, kua los yog hluav taws xob hluav taws xob xws li roj yog yuav tsum tau muab cov qhov sov siab dua.