改善挤出吹塑制件壁厚均匀性的几种方法

摘要

Recent progressing methods of improving the wall thickness of extrusion blow molded parts, including new brands of resin, the new technology of controlling the thickness of parison and new extrusion blow molding technology were in troduced. The mentioned parison thickness control technology contained special shaped die and adjustable die. The listed new extrusion blow molding technology covered three-dimensional hollow blow molding, parison temperature difference method, combination of partial vacuum forming and blow molding, and high pressure low-temperature extrusion blow molding technology.%概述了近年来改善挤出吹塑中空制件壁厚不均匀的方法及其进展，包括新牌号的树脂，新的型胚壁厚控制技术及新的挤出吹塑成形工艺。型胚控制技术主要介绍了异型口模和可调机头；新成形工艺包括3D中空吹塑，真空吸塑与挤出吹塑相结合的技术，型坯温差法及高压低温挤出吹塑技术。