Foamed plastic sheet
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United States of America Patent
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-
Aug 2, 2011
Grant Date -
May 8, 2008
app pub date -
Jan 10, 2008
filing date -
Aug 29, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
An unmixed plastic sheet, which is made of a thermoplastic material and which is composed of a number of body segments that are adjacent to one another in a plane, interconnected and made of a closed-cell foam material. The body segments are thermoplastically welded to one another at their abutting lateral faces while forming flat weld seams. The flat weld seams form a plastic intermediate layer, which has few pores, and which is provided in the form of a web structure that, when viewed from above, is reticular and reinforces the plastic sheet. The inventive plastic sheet is preferably used as a core layer in sandwich composites.
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