"Imigca emnyama," eyaziwa ngokuba "yimigca emnyama," ibhekiselele kwimigca emnyama okanye imigca evela kumphezulu wamalungu eplastiki.Isizathu esiphambili se-black streaks yi-thermal degradation yezinto zokubumba, eziqhelekileyo kwiiplastiki ezinozinzo olubi lwe-thermal, njenge-PVC kunye ne-POM.
Amanyathelo asebenzayo okuthintela ukwenzeka kwemivimbo emnyama kubandakanya ukuthintela ukushisa okunyibilikayo ngaphakathi kombhobho ekubeni kuphakame kakhulu kwaye kuncitshiswe isantya sokujova.Ukuba kukho izibazi okanye izikhewu kwi-barrel okanye kwi-screw, izinto ezinamathele kula malungu zinokugqithisa, okukhokelela ekuthotyweni kwe-thermal.Ukongezelela, iintanda kwikhonkco lokutshekisha nazo zingabangela ukuthotywa kwe-thermal ngenxa yokugcinwa kwe-melt, ngoko ke kubalulekile ukuba uqaphele xa usebenza kunye ne-viscosity ephezulu okanye iiplastiki ezilula ngokulula.
Izizathu zokwenzeka kwezintlu ezimnyama zinxulumene ikakhulu nezinto ezifana neqondo lobushushu lokunyibilika liphezulu kakhulu, isantya se-screw sikhawuleza kakhulu, uxinzelelo lwangasemva olugqithileyo, i-eccentricity phakathi kwe-screw kunye ne-barrel ebangela ubushushu bokungqubana, ukungonelanga okanye ubushushu obugqithisileyo kumbhobho. intsimbi, ukungazinzi okanye ukusasazwa kakubi kombala, inyibilika eshiyekileyo incamathele emlonyeni womlomo, iindawo ezifileyo kumsesane/umgqomo obangela ukufudunyezwa kwezinto, ungcoliseko kwimathiriyeli ehlaziyiweyo kumqala wombhobho, inaliti encinci kakhulu, ukuvaleka kwesinyithi. kumlomo, kunye nezinto ezishiyekileyo ezigqithisileyo ezikhokelela kwixesha elide lokunyibilika lokuhlala.
Ukuphucula umba wemivimbo emnyama, la manyathelo alandelayo anokuthathwa: ukuthoba umgqomo/ubushushu bombhobho, ukunciphisa isantya se-screw okanye uxinzelelo lwangasemva, ukugcinwa komatshini okanye ukutshintshwa komatshini ukuba kukho imfuneko, ngokufanelekileyo ukwandisa ububanzi bombhobho okanye ukunciphisa ubushushu bawo, ukubuyisela okanye ukongeza i-diffuser, ukucoca imathiriyeli eshiyekileyo evela kwintloko yombhobho, ukuhlola isikrufu, umsesane wokukhangela, okanye umphanda ukuba ugugekile, ukujonga okanye ukulungisa imathiriyeli yomqala womqala, ukulungisa izibuko lokutofa, okanye ukususa izinto zangaphandle kumbhobho, kunye nokunciphisa inani imathiriyeli eyintsalela yokunciphisa ixesha lokuhlala elinyibilikayo.
Indawo: Ishishini lePlastiki laseNingbo Chenshen, eYuyao, kwiPhondo laseZhejiang, eTshayina
Umhla: 27/09/2023
Ixesha lokuposa: Oct-30-2023