Yog vim li cas rau discoloration thaum txhaj molding

1, Cov khoom siv nam
(1) Cov khoom siv tsis huv, thiab cov plua plav lossis lwm cov plua plav tawm ntawm lub hopper, ua rau cov khoom tsis huv thiab tsis muaj xim.
(2) Thermocouples, tswj qhov kub thiab txias, lossis cua sov tshuab ua haujlwm tsis zoo vim qhov tsis zoo.
(3) Muaj cov teeb meem hauv lub thoob uas tuaj yeem txhawb nqa cov yas degradation yooj yim; Muaj cov khoom txawv teb chaws hlau daig rau hauv lub thoob los yog ntsia hlau zawj, thiab kev sib tsoo tsis tu ncua ua rau cov yas tsis muaj xim.
2, pwm
(1) Cov pwm tso tawm tsis zoo, thiab cov yas yog adiabatic thiab compressed, uas cuam tshuam nrog oxygen nyob rau hauv qhov kub thiab txias, hlawv cov yas.
(2) Lub rooj vag pwm me dhau.
(3) Muaj cov roj nplua nyeem ntau dhau thiab tso tawm cov neeg ua haujlwm hauv cov khoom lossis pwm. Yog tias tsim nyog, cov khoom siv yuav tsum tau ntxuav tsis tu ncua kom tshem tawm cov khoom siv ntxiv xws li cov khoom tiv thaiv zoo li qub uas phem dua li cov yas tiv thaiv tshav kub.
(4) Qhov loj ntawm lub nozzle qhov, lub ntsiab ntws channel, thiab kev hloov pauv channel me dhau.
3, txheej txheem nam
(1) Lub hau ntswj ceev yog siab dhau thiab qhov ua ntej molded rov qab siab yog siab dhau.
(2) Qhov kub ntawm lub thoob thiab lub nozzle yog siab dhau lawm.
(3) Kev txhaj tshuaj siab dhau lawm, lub sijhawm ntev dhau lawm, thiab kev txhaj tshuaj nrawm dhau, uas ua rau cov khoom tsis muaj xim.
4, Raws li cov khoom siv raw
(1) Cov khoom muaj paug.
(2) High noo noo thiab volatile cov ntsiab lus.
(3) Decomposition ntawm colorants thiab additives.