Dab tsi yog cov yam ntxwv ntawm cov extruded thiab txhaj tshuaj blown hollow yas khoom?
Cov khoom siv ua hluav taws xob ua zoo tshaj plaws yog: cov peev hauv cov khoom tsim tawm, cov khoom siv yooj yim, cov khoom siv yooj yim, kev mould nqi ntawm cov khoom yas tsis zoo, yog tias lub phab ntsa thickness ntawm cov khoom yog tsawg dua yam teeb meem, thiab yog ib txoj kab seam.
Qhov zoo ntawm kev txhaj tshuaj tiv thaiv kab yas yas hollow cov khoom muaj raws li nram no: qhov zoo ntawm cov khoom yas tsis zoo, qhov loj me me yog muaj tseeb, tsis muaj sib koom tes, phab ntsa thickness yog txawm, qhov ntau hom sib sau ntau lawm, automation degree yog siab, nws yog zoo heev rau cov huab hwm coj thiab cov qib high efficiency ntawm cov thawv me me.Qhov disadvantage yog tias cov cuab yeej thiab mould peev loj, cov lag luam ntawm ntau xav tau cov tswv tswv