INJECTION MOLDING PROCESS
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专利名称：INJECTION MOLDING PROCESS
发明人：GIANNI, Richard, F.,GIANNI, Daniel,
E.,CLEMENT, Michael, H.,MEYERS, Michael, R.申请号：EP92900875.3
申请日：19911029
公开号：EP0555392B1
公开日：
19960508
专利内容由知识产权出版社提供
摘要：Foam thermoplastic injection molding apparatus and method produces structurally superior foam injection molded products. The process includes plasticating solid polymer to a polymer melt; accumulating the melt in an accumulator having a telescoping inlet, which allows the first melt which enters to be the first to leave the accumulator; combining a preselected amount of melt with a preselected amount of gas in bubble form to form homogenized polymer foam; shearing the homogenized polymer foam to reduce the size of gas bubbles; and injecting the polymer foam through a special gate assembly into a mold. The gate assembly has a removable nose which remains with the mold, allowing the foam to expand within the mold but not allowing the foam to escape the mold. The process and apparatus allow low molded-in stress products to be produced, and can process recyclable thermoplastics, either single materials or mixtures. Thus, no segregation of materials is required.
申请人：QUANTUM PLASTICS INC
地址：US
国籍：US
代理机构：Beresford, Keith Denis Lewis 更多信息请下载全文后查看