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    • 12. 发明授权
    • Process for producing hollow bodies of thermoplastic material and apparatus for same
    • 用于制造热塑性材料的空心体的方法及其装置
    • US07244388B2
    • 2007-07-17
    • US11173123
    • 2005-07-01
    • Wolfgang Kummer
    • Wolfgang Kummer
    • B29C49/70
    • B29C49/4247B26D3/001B26D3/163B29C49/04B29C2793/009
    • The invention concerns a process and an apparatus for producing hollow bodies of thermoplastic material by means of extrusion blow molding. A tubular preform of plasticised material is expanded beyond parts of a blow molding mold enclosing it, by means of increased external pressure, wherein the preform, prior to closure of the mold halves, is spread transversely with respect to the extrusion direction and in a separation plane of the blow molding mold, in such a way that it extends between the lateral edges of the mold cavity of the blow molding mold. Prior to removal of the article from the blow molding mold, the bulge portion produced after closure of the blow molding mold is cut open along its length at each of the two sides of the mold at the respective edges extending in the extrusion direction.
    • 本发明涉及通过挤压吹塑成型制造热塑性材料的中空体的方法和装置。 通过增加的外部压力将塑化材料的管状预成型件扩展到包围其的吹塑模具的部分之外,其中在关闭半模之前,预成型件相对于挤出方向横向扩展,并且在分离 吹塑模具的平面,使得其在吹塑模具的模腔的侧边缘之间延伸。 在从吹塑模具移除物品之前,在吹塑模具关闭之后产生的凸起部分沿着在挤出方向上延伸的相应边缘处的模具两侧的每一侧沿其长度被切割。