Izincwadi zokufunda ezisebenza ngepulasitiki ngokuvamile ziphatha ipulasitiki engxenyeni eqinile yokudlulisa yesikulufu njengombhede oqinile ongenakunyakaziswa phakathi kwezimbumbulu zepulasitiki. Isivinini sokudlulisela phambili sibe sesinqunywa ngokubala isimo esifanelekile sokunyakaza nokungqubuzana phakathi kwalo mbhede oqinile nodonga lombhobho, indawo yokuphakela ngesikulufu, nendawo yesikulufu yesiteshi.
Le ndlela ihluke kakhulu kwengokoqobo futhi ayikwazi ukusetshenziselwa ukuhlaziya ukuphakelwa kwezinhlayiya zepulasitiki zomumo ohlukile. Uma ama-granules epulasitiki emancane, azohlakazeka futhi adilike njengoba edonselwa phambili ngodonga lomgqomo, kancane kancane ahlanganiswe ukuze akhe amapulaki aqinile. Uma ububanzi bama-granules bucishe bulingane nokujula kwesiteshi sesikulufu, umzila wawo uwukunyakaza okulandelanayo eduze kwesiteshi esiyisikulufa ngobubanzi, kanye nokunyakaza komugqa okune-engeli encane. Ngenxa yokuthi ipulasitiki ihlelwe ngokukhululekile kusiteshi sesikulufu uma ama-granules emakhulu, isivinini sokudlulisa sihamba kancane. Uma ama-granules eba makhulu ngokwanele ukuthi ububanzi bawo budlule ukujula kwesiteshi sesikulufu lapho kungena esigabeni sokuminyanisa, ipulasitiki izobhajwa phakathi kwesikulufu nombhobho. Uma amandla okudonsa aye phambili enganele ukunqoba amandla adingekayo ukuze kuncishiswe ama-granules epulasitiki, ipulasitiki izohlala ibhajwe kusiteshi sesikulufu futhi ingaqhubeki phambili.
Lapho ipulasitiki isondela endaweni yayo yokuncibilika, ipulasitiki exhumene nomgqomo iqala ukuncibilika, yenze ifilimu encibilikisiwe. Uma ugqinsi lwale filimu encibilikisiwe ludlula igebe phakathi kwesikulufu nomphongolo, ichopho lezimbambo zesikulufa liklwebha kakhulu ifilimu encibilikisiwe ukusuka odongeni lwangaphakathi lombhobho kuya empandeni yezimbambo eziyisikulufu, kancane kancane liyiguqule libe i-vortex{1}}njenge-flow zone{2}}ichibi elincibilikisiwe le-screw surface{3}
Ngenxa yokuncipha kancane kancane kokujula kwesiteshi sesikulufu engxenyeni encibilikisiwe kanye nokucindezelwa kwechibi elincibilikisiwe, umbhede oqinile uphoqeleka ukuba ubheke odongeni lwangaphakathi lombhobho, ngaleyo ndlela kusheshiswe inqubo yokudlulisa ukushisa ukusuka emgqonyeni oshisayo ukuya embhedeni oqinile. Ngesikhathi esifanayo, ukuzungezisa kwesikulufu kubangela isenzo sokugunda efilimini encibilikisiwe phakathi kombhede oqinile kanye nodonga lwangaphakathi lombhobho, kuncibilikisa okuqinile ekuxhumaneni phakathi kwefilimu encibilikisiwe nombhede oqinile. Njengoba umbhede oqinile uzungeza phambili, umthamo wawo uyancipha kancane kancane, kuyilapho umthamo wechibi elincibilikisiwe ukhula kancane kancane. Uma izinga lokuncipha kogqinsi lombhede oqinile lingaphansi kwezinga lokuncipha kokujula kwesiteshi sesikulufu, umbhede oqinile ungase uvimbe kancane noma ngokuphelele ishaneli yesikulufu, okubangele ukushintshashintsha kwepulasitiki, noma okuholela ekushiseni okweqile kwendawo ngenxa yokucindezela okukhulu kwendawo kanye nokwanda kokushisa okungqubuzanayo.
Esigabeni se-homogenization sesikulufu, umbhede oqinile uphukile ngenxa yobukhulu bawo obuncane, wenza izinhlayiya ezincane eziqinile ezihlakazekile echibini elincibilikisiwe. Lezi zinhlayiya eziqinile ziyancibilika ngenxa yokungqubuzana nokudlulisa ukushisa ngokuncibilika okuzungezile. Kuleli qophelo, umsebenzi oyinhloko wesikulufu ukunyakazisa ukuncibilika kwepulasitiki ukuqinisekisa ukuxubana okufanayo. Isivinini sokuncibilika sokusabalalisa sisukela kusivinini esikhulu eduze kodonga lomgqomo kuya esivinini esiphansi eduze naphansi kwesiteshi sesikulufu. Uma ukujula kwesiteshi sesikulufu kungashoni futhi i-viscosity encibilikayo iphezulu, ukungqubuzana phakathi kwama-molecule ancibilikayo kuzoba kukhulu.
Ngenxa yomehluko omkhulu wezinga lokuncibilika, i-viscosity encibilikayo, izinga lokushisa elincibilikayo, ukuzwela kwe-viscosity kuzinga lokushisa kanye nezinga le-shear, ukugqwala kwamagesi{0}}awohlokayo aphezulu, kanye ne-coefficient of friction phakathi kwezinhlayiya zepulasitiki,-izikulufu zenjongo ezijwayelekile zingase zibe nomuzwa wokushisa we-shear ophakeme kakhulu esigabeni esithile se-PC ecwebezelayo I-PA,{2}}isisindo esiphezulu se-molecular-ABS, PP-R, PVC, njll.). Lesi simo ngokuvamile singaqedwa ngokunciphisa isivinini se-screw, kodwa lokhu nakanjani kuthinta ukusebenza kahle kokukhiqiza. Ukuze kuzuzwe ukusebenza kahle kwepulasitiki kulawa mapulasitiki, inkampani yethu isungule izikulufo ezikhethekile ze-plasticizing nemiphongolo yalawa mapulasitiki. Lezi zikulufu ezikhethekile nemiphongolo yakhelwe ukubhekana nezindaba ezibalulekile ezifana ne-solid friction coefficient, melt viscosity, kanye nesivinini sokuncibilika samapulasitiki ashiwo ngenhla.
