Izindaba - Usebenza Kanjani Umshini Wokukhipha Ipulasitiki?

I-plastic extrusion, eyaziwa nangokuthi i-plasticating extrusion, inqubo yokukhiqiza umthamo ophezulu oqhubekayo lapho impahla ye-thermoplastic - esesimweni sempushana, ama-pellets noma ama-granulate - inyibilika ngendlela efanayo bese ikhishwa ekubunjweni kufa ngendlela yengcindezi. Ku-scrusion yesikulufu, ingcindezi ivela ekuzungezweni kwesikulufu ngokumelene nodonga lombhobho. Njengoba incibilika yepulasitiki idlula ku-die, ithola ukwakheka kwembobo yokufa bese ishiya i-extruder. Umkhiqizo okhishiwe ubizwa ngokuthi i-extrudate.

I-extruder ejwayelekile iqukethe izindawo ezine:

Indawo yokuphakelayo

Kule ndawo, ukujula kwendiza akushintshi. Ibanga eliphakathi kobubanzi obukhulu phezulu kwendiza kanye nobubanzi obuncane besikulufu esingaphansi kwendiza ukujula kwendiza.

I-Transition Zone noma Indawo Yokucindezela

Ukujula kwendiza kuqala ukuncipha kule zoni. Eqinisweni, impahla ye-thermoplastic iyacindezelwa futhi iqala ukwenza ipulasitiki.

Indawo Yokuxuba

Kule ndawo, ukujula kwendiza kuphinde kube njalo. Ukuqinisekisa ukuthi impahla incibilike ngokuphelele futhi ixubene ngendlela efanayo, kungase kube khona isici esikhethekile sokuxuba.

I-Metering Zone

Le ndawo inokujula kwendiza okuncanyana kunasendaweni exutshwayo kodwa ihlala injalo. Futhi, ingcindezi iphusha ukuncibilika ngokufa kokuma kule ndawo.

Ngakolunye uhlangothi, ukuncibilika kwengxube ye-polymer kubangelwa izici ezintathu ezinkulu:

Ukudlulisa Ukushisa

Ukudlulisa ukushisa amandla adluliswa esuka ku-extruder motor aye ku-extruder shaft. Futhi, ukuncibilika kwe-polymer kuthintwa iphrofayili yesikulufa nesikhathi sokuhlala.