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    • 10. 发明授权
    • Extrusion blow molding method for plastic containers, especially plastic bottles
    • 塑料容器挤出吹塑法,特别是塑料瓶
    • US09138930B2
    • 2015-09-22
    • US12949297
    • 2010-11-18
    • Johann Künz
    • Johann Künz
    • B29C47/22B29C47/00B29C47/06B29C47/26B29C47/92B29C49/04B29C49/22
    • B29C47/0023B29B2911/14326B29B2911/1434B29C47/065B29C47/22B29C47/266B29C47/92B29C49/04B29C49/22B29C2049/048B29C2947/926B29C2947/92647B29C2947/92904B29C2947/92961
    • An extrusion blow-molding method for plastic containers, for example, plastic bottles, is disclosed, wherein a one- or multi-layer plastic tube is extruded with a predetermined extrusion pressure through an annular gap, which is delimited by an extrusion die provided on an extrusion head and a axially adjustable mandrel and which can be adjusted with regard to the width thereof. The extruded plastic tube is introduced into a mold cavity of a blow-molding tool arrangement, blow-molded into a plastic container in accordance with the mold cavity by overpressure and then demolded. Additional plastic material is added in metered quantity to the extruded plastic tube at least in some regions in the direct vicinity of the mouth of the extrusion die. The additional plastic material is introduced through one or more discharge nozzles distributed across the circumference with a pressure that is higher than the extrusion pressure such that the plastic material is locally compressed and that, after passing the extrusion die, the plastic tube in the regions provided with the additional plastic material has a greater wall thickness than the remaining plastic tube.
    • 公开了一种用于塑料容器(例如塑料瓶)的挤出吹塑成型方法,其中一层或多层塑料管以预定的挤出压力通过环形间隙挤出,该环形间隙由设置在 挤出头和可轴向调节的心轴,并且可以相对于其宽度调节。 将挤出的塑料管引入吹塑工具装置的模腔中,通过超压将其吹塑成型腔中的塑料容器,然后脱模。 至少在直接靠近挤出模头口部的某些区域,将另外的塑料材料以计量的量加入到挤出的塑料管中。 额外的塑料材料通过一个或多个排出喷嘴引入,其中压力高于挤压压力,使得塑料材料被局部压缩,并且在通过挤出模头之后,在所提供的区域中的塑料管 附加的塑料材料比其余的塑料管具有更大的壁厚。