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1. 发明授权

US5874037A Method for molding composite metal-elastomer styled wheels 失效
标题翻译：复合金属弹性体轮圈成型方法
公开(公告)号：US5874037A
公开(公告)日：1999-02-23
申请号：US383957
申请日：1995-02-06
申请人： Ronald P. Saia , Paul N. Skotynsky
发明人： Ronald P. Saia , Paul N. Skotynsky
IPC分类号： B29C33/10 , B29C33/38 , B29C70/78 , B29C37/02
CPC分类号： B29C33/3814 , B29C33/10 , B29C70/78 , B29L2031/32 , Y10S425/812
摘要： Apparatus, method and sealing means for liquid urethane reaction mixture injection molding of a composite styled metal and plastic vehicle wheel wherein a metal wheel subassembly serves as a preform between the separable mold parts in the mold apparatus and which is united with the plastic body molding material to form the composite wheel. One of the mold parts has a mold cavity surface operable in mold closed condition to define with the outboard face of the wheel subassembly a mold cavity adapted to provide an ornamental configuration for an outboard face of the plastic body of the composite wheel. A gas permeable and liquid infiltratable mold sealing membrane has a first portion thereof communicating with ambient atmosphere externally of the mold cavity and a second portion thereof communicating with the mold cavity. The membrane is made of fabric material comprising random fibers, calendered into sheet form and selected from the group consisting of polyethylene, polypropylene, Teflon coated polyethylene, and Teflon coated polypropylene fibers. The membrane has a gas permeability ranging between about one to twenty cubic feet of air per minute, and more particularly between about one to four cubic feet of air per minute. The membrane fabric material consists of fibers processed into coherent sheet form having a thickness ranging between about 0.01 inches to about 0.10 inches and having a weight in the order of about 15 ounces per square yard, and is heat seared on at least the side thereof juxtaposed to the mold cavity. The mold sealing membrane is operable to provide flow-through limited venting of gases from the mold cavity to ambient until the membrane seal is clogged by liquid reaction molding material infiltrate therein.
摘要翻译：用于液体聚氨酯反应混合物的装置，方法和密封装置，用于复合型金属和塑料车轮的注射成型，其中金属轮子组件用作模具装置中的可分离的模具部件之间的预制件，并与塑料体成型材料以形成复合轮。模具部件之一具有可在模具闭合状态下操作的模腔表面，以与车轮子组件的外侧面一起限定适于提供复合轮的塑料体的外侧面的装饰构造的模腔。透气且液体渗透的模具密封膜的第一部分与模腔外部的环境大气相通，其第二部分与模腔连通。该膜由包含随机纤维的织物材料制成，压延成片状并选自聚乙烯，聚丙烯，聚四氟乙烯涂覆的聚乙烯和聚四氟乙烯涂覆的聚丙烯纤维。该膜具有每分钟约1至20立方英尺空气之间的气体渗透性，更特别地在约1至4立方英尺每分钟的空气之间。膜织物材料由加工成粘合片状的纤维组成，厚度范围介于约0.01英寸至约0.10英寸之间，重量约为每平方码约15盎司，并且至少在其一侧并排，到模腔。模具密封膜可操作以提供气流从模腔到环境的有限通气，直到膜密封被液体反应模制材料渗入其中而被堵塞。

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