Isikhunta sePlastiki isifinyezo sesikhunta esihlanganisiwe esisetshenziselwa ukubumba ukucindezela, ukubunjwa kwe-extrusion, umjovo, ukubunjwa kokushaywa kanye nokubumba kwegwebu eliphansi.Izinguquko ezididiyelwe zokubunjwa kwe-mold convex kanye ne-concave mold kanye nohlelo lokubumba olusizayo lungacubungula uchungechunge lwezingxenye zepulasitiki zomumo abahlukene nosayizi abahlukene.Isikhunta sepulasitiki singumama wezimboni, futhi ukukhishwa kwemikhiqizo emisha manje kuhilela amapulasitiki.

Ihlanganisa ikakhulukazi isikhunta sowesifazane esinomgodi oguquguqukayo owakhiwa isikhunta esihlanganisiwe sowesifazane, ingxenye yesikhunta sowesifazane kanye nebhodi lekhadi elihlanganisiwe lesikhunta sowesifazane, kanye ne-substrate ehlanganisiwe yesikhunta, ingxenye ye-convex mold, ibhodi lekhadi elihlanganisiwe lesikhunta, a ingxenye yokusika umgodi kanye ne-Punch enomongo oguquguqukayo owakhiwe amapuleti ayinhlanganisela asikwe emaceleni.
Ukuze kuthuthukiswe ukusebenza kwamapulasitiki, izinto ezisizayo ezahlukahlukene, ezinjengama-filler, ama-plasticizers, ama-lubricant, ama-stabilizers, ama-colorants, njll., kumele zengezwe ku-polymer ukuze zibe amapulasitiki asebenza kahle.

1. I-Synthetic resin iyingxenye ebaluleke kakhulu yepulasitiki, futhi okuqukethwe kwayo kumapulasitiki ngokuvamile ku-40% kuya ku-100%.Ngenxa yokuthi okuqukethwe kukhulu, futhi uhlobo lwe-resin ngokuvamile lunquma uhlobo lwepulasitiki, abantu bavame ukubheka inhlaka njengegama elifanayo lepulasitiki.Isibonelo, phambanisa i-polyvinyl chloride resin namapulasitiki e-polyvinyl chloride, nama-phenolic resins namapulasitiki e-phenolic.Eqinisweni, i-resin nepulasitiki yimibono emibili ehlukene.I-resin iyi-polymer eluhlaza engacutshungulwanga engasetshenziselwa ukwenza amapulasitiki kuphela, kodwa futhi iyimpahla eluhlaza yokumboza, izinto zokunamathisela, nemicu yokwenziwa.Ngaphezu kwengxenye encane kakhulu yamapulasitiki aqukethe i-resin engu-100%, amapulasitiki amaningi adinga ezinye izinto ngaphezu kwe-resin yengxenye eyinhloko.

2. I-Filler Filler ibizwa nangokuthi i-filler, engathuthukisa amandla nokumelana nokushisa kwamapulasitiki futhi inciphise izindleko.Isibonelo, ukwengezwa kwempushana yokhuni ku-phenolic resin kunganciphisa kakhulu izindleko, okwenza ipulasitiki ye-phenolic ibe enye yepulasitiki eshibhile, kuyilapho futhi kuthuthukisa kakhulu amandla omshini.Izigcwalisi zingahlukaniswa zibe izinhlobo ezimbili: izigcwalisi eziphilayo kanye nezigcwalisi ezingaphili, ezokuqala ezinjengofulawa wokhuni, amanikiniki, amaphepha nemicu yendwangu ehlukahlukene, kanti lena yokugcina efana ne-glass fiber, i-diatomaceous earth, i-asbestos, ne-carbon black.

3. Ama-Plasticizers Ama-Plasticizer angakhuphula ipulasitiki kanye nokuguquguquka kwepulasitiki, anciphise ukonakala, futhi enze amapulasitiki acutshungulwe futhi alolongeke kalula.Ama-Plasticizer ngokuvamile ayinhlanganisela yezinto eziphilayo ezibilisa kakhulu ezixubene ne-resin, engenabuthi, engenaphunga, futhi ezinzile ekukhanyeni nasekushiseni.Okuvame ukusetshenziswa kakhulu yi-phthalate esters.Isibonelo, ekukhiqizeni amapulasitiki e-polyvinyl chloride, uma ama-plasticizers engeziwe engeziwe, amaplastiki e-polyvinyl chloride athambile angatholakala;uma awengeziwe noma angaphansi kwe-plasticizers (inani elingaphansi kwe-10%), amapulasitiki e-polyvinyl chloride aqinile angatholakala.

4. I-Stabilizer Ukuze uvimbele i-resin yokwenziwa ukuthi ingaboli futhi yonakaliswe ukukhanya nokushisa ngesikhathi sokucubungula nokusetshenziswa, nokwelula impilo yesevisi, i-stabilizer kufanele yengezwe epulasitiki.Okuvame ukusetshenziswa yi-stearate ne-epoxy resin.

5. Ama-Colourants Colorants angenza amapulasitiki abe nemibala ehlukahlukene egqamile nenhle.Odayi bemvelo abavame ukusetshenziswa kanye nezingulube ze-inorganic njengama-colorants.

6. I-Lubricant Indima ye-lubricant ukuvimbela ipulasitiki ukuthi inganamatheli ekubunjweni kwensimbi ngesikhathi sokubunjwa, futhi ngesikhathi esifanayo yenza ubuso bepulasitiki bushelelezi futhi bube buhle.Izithambisi ezisetshenziswa kakhulu zihlanganisa i-stearic acid kanye nosawoti wayo we-calcium ne-magnesium.Ngaphezu kwezithasiselo ezingenhla, ama-flame retardants, ama-foaming agents, ama-antistatic agents, njll. nawo angangezwa epulasitiki.