tshuab molding

Tshuab moulding feem ntau yog hais txog lub tshuab nqus tsev molding (tseem hu ua tshuab moulding), uas yog ib txoj hauv kev ua kom kub-kub parison kaw rau hauv pwm los tsim cov khoom hollow los ntawm kev siv roj, thiab yog txoj kev tsim cov yas molding sai heev. . Cov pwm rau tshuab moulding tsuas muaj poj niam pwm (concave pwm). Piv nrog rau kev txhaj tshuaj molding, cov khoom siv tus nqi qis dua, qhov kev hloov pauv tau zoo dua, cov pwm tuaj yeem ua tau zoo (xws li kev ntxhov siab tsawg), thiab cov khoom lag luam nrog cov undulating nkhaus nkhaus (puab) tuaj yeem molded.