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1.发明授权Process for producing a plastic sheet having parallel ribs extruding from both surfaces 失效用于生产具有从两个表面挤出的平行肋的塑料片的方法
公开(公告)号：US4101620A
公开(公告)日：1978-07-18
申请号：US495432
申请日：1974-08-07
CPC分类号： B29C67/0044 , B29C47/14 , B29C59/04 , B29C47/00 , B29C47/0021 , B29C47/003 , B29C47/0033 , B29C47/0057 , B29C47/0066 , B29K2027/06 , B29K2995/0051 , B29L2007/001 , B29L2007/008
摘要： A process for the production of bilaterally corrugated plastic sheets by extruding a plastic synthetic resin composition, preferably soft PVC, from a slotted nozzle fashioned in a double comb-like shape, stretching the sheet in the longitudinal direction of the ribs during the drawing-off process and passing the sheet through a cooled glazing or smoothing calender. Also disclosed are various sheets produced by the above-process as well as methods for joining the same together.
摘要翻译： 通过从双梳状形状的开槽喷嘴挤出塑料合成树脂组合物（优选软PVC）来生产双面波纹塑料片的方法，在拉拔期间沿着肋的纵向拉伸片材 处理并使片材通过冷却的玻璃或平滑压光机。 还公开了通过上述方法制造的各种片材以及将它们连接在一起的方法。
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2.发明授权Process and apparatus for testing the tightness of seam joints of synthetic resin sheets by means of vacuum 失效通过真空测试合成树脂板接缝的紧密度的方法和装置
公开(公告)号：US4002055A
公开(公告)日：1977-01-11
申请号：US334074
申请日：1973-02-20
申请人： Friedrich Kops
发明人： Friedrich Kops
CPC分类号： G01M3/2884 , B29C65/8246 , G01M3/145 , B29C66/71 , B29C66/727
摘要： An apparatus for testing the strength and/or the leakproofness of seams or joints formed between synthetic resin sheets comprising a semicylindrical shell of transparent material having rounded closed-in portions and forming with its peripheral edges, sealing strip means surrounding said opening a continuous frame for engaging said strip means and a flexible closure means operatively associated with said frame for sealing off the opening whereby a test chamber is formed and pump means connected to said chamber for applying a vacuum thereto.
摘要翻译： 一种用于测试在合成树脂片之间形成的接缝或接头的强度和/或密封性的装置，其包括具有圆形封闭部分的透明材料的半圆柱形壳体并与其周边边缘一起形成的密封条装置围绕所述开口围绕连续框架 接合所述条带装置和与所述框架可操作地相关联的柔性封闭装置，用于密封开口，由此形成测试室，并且连接到所述室的泵装置用于向其施加真空。
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