Multi-layered hollow-chamber sheet and method to produce...

E - Fixed Constructions – 04 – B

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E04B 7/00 (2006.01) B29C 65/58 (2006.01) E04C 2/34 (2006.01) E04C 2/54 (2006.01) E04D 11/00 (2006.01) E04D 3/28 (2006.01)

Patent

CA 2009220

Abstract Multi-levered hollow-chamber sheet and method of producing such sheet The proposed object of the invention is a multi-layered hollow-chamber sheet made of thermoplastic material and consisting of parallel layers removably connected through webs . Each surface of each layer is smoothed so that the result is a hollow chamber of high optical quality.

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