Tshuab moulding, tseem hu ua hollow moulding, tshuab moulding, yog kev tsim khoom lag luam ntawm kev ua hollow yas qhov chaw: nws yog thaum pib siv los ua cov iav fwj. Feem ntau, muaj peb lub tshuab moulding moulding: Extrusion tshuab moulding, txhaj tshuab moulding, thiab txhaj tshuab tshuab moulding. Lub tshuab moulding pib los ntawm melting yas thiab tsim nws rau hauv ib tus neeg paronis, lossis ntawm kev txhaj tshuaj thiab txhaj tshuaj tshuab moulding (isb) preforms). Ib Parison yog tubular yas daim nrog ib lub qhov ntawm ib kawg los ntawm cov pa hluav taws xob no tuaj yeem dhau. Nws yog cov qauv moulding uas siv roj siab rau innaloplastics kaw hauv cov pwm rau hauv cov khoom lag luam hollow, thiab yog siv los tsim cov khoom hollow.
Cov parison yog ces clamped rau hauv pwm thiab huab cua cua tshuab rau nws. Cov cua siab yog tom qab thawb tawm ntawm cov yas kom phim cov pwm. Thaum cov yas txias thiab ua kom tawv, pwm qhib thiab ib feem yog ntiab tawm.
