知識貝殼
知識貝殼
所屬欄目：聚合物科學與工程
Blowmoldingisaprocessusedtoproducethin-wallhollowthermoplasticparts.Acylinderortubeofplastic,calledaPARISON,isplacedbetweenthejawsofamold.Themoldisclosedtopinchofftheendsoftheheatedplasticandcompressedairpressureisusedtoforcethematerialagainstthemoldfaces ......（本文共 9763 字 ） [閱讀本文] >>