Iincwadi zokufunda ekwenziweni kweplastiki ngokwesiqhelo ziphatha iplastiki ekwindawo eqinileyo yokuhambisa isikrufu njengebhedi eyomeleleyo engenantshukumo phakathi kweegranule zeplastiki. Isantya sokuhambisa phambili simiselwa ngokubala imeko eyiyo yentshukumo kunye nokukhuhlana phakathi kwale bhedi iqinileyo kunye nodonga lombhobho, umphezulu wefidi jijwa, kunye nomphezulu wesijija somphezulu.
Le ndlela ihluke kakhulu kwinyani kwaye ayinakusetyenziselwa ukuhlalutya ukutyiswa kweegranules zeplastiki zeemilo ezahlukeneyo. Ukuba iigranule zeplastiki zincinci, ziya kuhluma kwaye zibhukuqe njengoko zitsalwa phambili eludongeni lomphanda, zidityaniswa ngokuthe ngcembe ukwenza iiplagi eziqinileyo. Xa i-diameter ye-granules iphantse yalingana nobunzulu be-screw channel, i-trajectory yabo ngokuyimfuneko sisindululo somgca ecaleni kwetshaneli ye-screw radially, kunye nentshukumo yomgca ene-engile encinci. Ngenxa yokuba iplastiki icwangciswe ngokukhululekileyo kwijelo le-screw xa iigranules zinkulu, isantya sokuhambisa siyacotha. Xa iigranuli zisiba zikhulu ngokwaneleyo kangangokuba ububanzi bazo bugqithise ubunzulu bejelo lokujija xa ungena kwicandelo loxinzelelo, iplastiki iya kuxinga phakathi kwesikrufu kunye nomphanda. Ukuba amandla okutsalela phambili awanelanga ukoyisa amandla afunekayo ukuze acande iigranule zeplastiki, iplastiki iya kuhlala ibambekile kwisijija sojelo kwaye ingaqhubeli phambili.
Xa iplastiki isondela kwindawo yayo yokunyibilika, iplastiki edibene nombhobho iqala ukunyibilika, yenze ifilimu etyhidiweyo. Xa ubukhulu bale filimu butyhidiweyo bugqithise isithuba esiphakathi kwesikrufu kunye nebhere, incam yesikrufu sembambo ikrazula ifilimu etyhidiweyo ukusuka kudonga olungaphakathi lombhobho ukuya kwingcambu yesikrufu, ijike kancinane ibe yi-vortex{1}efana ne-flow zone{2}}indawo etyhidiweyo yedama lokuphola{3}
Ngenxa yokucolwa kancinci kancinci kobunzulu bejelo le-screw kwicandelo elityhidiweyo kunye nokunyanzeliswa kwedama elityhidiweyo, ibhedi eqinileyo iyanyanzeliswa ukuya kudonga lwangaphakathi lombhobho, ngaloo ndlela ikhawulezisa inkqubo yokudlulisa ubushushu ukusuka kumbhobho oshushu ukuya kwibhedi eqinileyo. Kwangaxeshanye, ukujikeleziswa kwesikrufu kubangela isenzo sokucheba kwifilimu etyhidiweyo phakathi kwebhedi eqinileyo kunye nodonga lwangaphakathi lombhobho, ukunyibilika okuqinileyo kujongano phakathi kwefilimu etyhidiweyo kunye nebhedi eqinileyo. Njengoko ibhedi eqinileyo ijikeleza phambili, umthamo wayo uyancipha ngokuthe ngcembe, ngelixa umthamo wedama elinyibilikisiweyo ukhula ngokuthe ngcembe. Ukuba umyinge wokuhla kobukhulu bebhedi eqinileyo ungaphantsi kunomlinganiselo wokuhla kubunzulu bejelo lokujija, ibhedi eqinileyo ingavala ngokuyinxenye okanye ngokupheleleyo ivale isikhonkwane setshaneli, ibangele ukuguquguquka kweplastiki, okanye okukhokelela ekushiseni okugqithisileyo kwendawo ngenxa yoxinzelelo olugqithisileyo lwendawo kunye nokwanda kobushushu bokukhuhlana.
Kwicandelo le-homogenization ye-screw, ibhedi eqinile iye yaphuka ngenxa yobukhulu bayo obuncinci, yenza iincinci ezincinci eziqinileyo ezihlakazwe kwi-pool etyhidiweyo. La masuntswana aqinileyo ayanyibilika ngokukhuhlana kunye nokudluliselwa kobushushu kunye nenyibilika ejikelezileyo. Ngeli xesha, umsebenzi ophambili wesikrufu kukuphazamisa ukunyibilika kweplastiki ukuqinisekisa ukuxubana okufanayo. Ukuhanjiswa kwesantya sokunyibilika sisuka kwesona santya siphezulu kufutshane nodonga lombhobho ukuya kwesona santya sisezantsi kufutshane nomzantsi wesijija sejelo. Ukuba ubunzulu besiteshi esijijwayo bunzulu kwaye i-viscosity yokunyibilika iphezulu, ukukhuhlana phakathi kweemolekyuli zokunyibilika kuya kuba nzulu.
Ngenxa yomahluko obalulekileyo weqondo lokunyibilika, i-viscosity enyibilikayo, ukunyibilika kwamaqondo obushushu, uvakalelo lwe-viscosity kwiqondo lobushushu kunye nesantya sokucheba, ukonakala kweegesi eziphezulu zokubola, kunye ne-coefficient of friction phakathi kwamasuntswana eplastiki, isiqhelo jikelele{1} izikrufu zenjongo zinokuba namava obushushu obugqithisileyo obugqithise kakhulu kwi-PC ye-shear kunye neempawu eziphezulu ze-shear kwi-PC. PA, phezulu-imolekyuli-ubunzima ABS, PP-R, PVC, njl.). Lo mcimbi unokupheliswa ngokubanzi ngokunciphisa isantya se-screw, kodwa oku kuchaphazela ukusebenza kakuhle kwemveliso. Ukufezekisa iplastiki esebenzayo yezi plastiki, inkampani yethu iphuhlise izikrufu ezikhethekileyo zeplastiki kunye nemigqomo yezi plastiki. Ezi zikrufu zikhethekileyo kunye nemigqomo yenzelwe ukujongana nemiba ephambili efana ne-coefficient ye-friction eqinile, i-viscosity enyibilikayo, kunye nesantya sokunyibilika kweeplastiki ezikhankanywe ngasentla.
