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1. 发明授权

US3864182A Method of making a reinforced plastic apertured tube 失效
标题翻译：制造增强塑料有孔管的方法
公开(公告)号：US3864182A
公开(公告)日：1975-02-04
申请号：US38048973
申请日：1973-07-18
申请人： PLAS STEEL PRODUCTS INC
发明人： SHOBERT SAMUEL M , RICE BERNARD L
IPC分类号： B29C33/00 , B29C53/58 , B29C53/80 , B29C70/34 , B29C70/54 , B29D28/00 , B65H81/00 , B31C13/00 , E03B3/18
CPC分类号： B29C70/545 , B29C33/0033 , B29C53/587 , B29C53/805 , B29C70/347 , B29D28/005 , B29K2023/0683 , B29K2309/08 , B29K2827/18 , B29L2031/737 , B65H81/00
摘要： A method of fabricating a reinforced plastic, apertured tube, such as a well screen, which includes the steps of providing an elongated strip of plastic material which will not bond to the plastic material from which the tube is formed, the strip having a base portion and an upstanding portion extending therefrom. The strip is wound on a mandrel with the base portion in engagement therewith and the upstanding portion forming a generally helical groove, and circumferentially spaced, longitudinally extending grooves are formed in the upstanding portion of the thus-wound strip. A multi-filament glass strand pre-wetted with heathardenable plastic material is wound in the helical groove and lengths of such strand are placed in the longitudinal grooves so as substantially to fill the helical and longitudinal grooves. The plastic material is then hardened while the strand and lengths are in the grooves and the strip is on the mandrel thereby to form a glass-reinforced plastic tube surrounding the base portion of the strip and with the upstanding portion of the strip embedded in the wall of the tube. The mandrel is then removed from the interior of the base portion of the wound strip and the strip is removed from the interior of the tube, removal of the upstanding portion of the strip from the wall of the tube leaving apertures therein.
摘要翻译：一种制造增强塑料，多孔管（诸如井筛）的方法，其包括提供不会与形成管的塑料材料结合的细长的塑料材料条的步骤，所述带具有基部和从其延伸的直立部分。带材被卷绕在心轴上，其基部与其接合，并且直立部分形成大致螺旋状的沟槽，并且周向隔开的纵向延伸的凹槽形成在如此缠绕的条带的直立部分中。用热可硬化塑料材料预润湿的多丝玻璃丝线缠绕在螺旋槽中，并且将这种线的长度放置在纵向槽中，以便基本上填充螺旋形纵向槽。然后将塑料材料硬化，同时线材和长度在槽中，并且条带在心轴上，从而形成围绕条的基部的玻璃增强塑料管，并且带的直立部分嵌入壁中的管。然后将芯棒从卷绕的条的基部的内部移除，并且从管的内部移除条带，从管的壁移除直立部分的条带，留下孔。

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