Foamed plastic sheet

Details Foamed plastic sheet Foamed plastic sheet

B - Operations, Transporting

32

B

B32B 3/18 (2006.01) B32B 37/00 (2006.01)

Patent

CA 2496492

The invention relates to an unmixed plastic sheet (10), which is made of a thermoplastic material and which is composed of a number of body segments (11) that are adjacent to one another in a plane, interconnected and made of a closed-cell foam material. To this end, these body segments (11) are thermoplastically welded to one another at their abutting lateral faces while forming flat weld seams (12, 13). The flat weld seams (12, 13) 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 (10). The inventive plastic sheet (10) is preferably used as a core layer in sandwich composites (1).

L'invention concerne une feuille de plastique (10) sans mélange constituée d'une matière thermoplastique, cette feuille étant formée d'une pluralité de segments structurels (11) en mousse à alvéoles fermées disposés les uns à côté des autres dans un plan et assemblés les uns aux autres. Lesdits segments structurels (11) sont soudés de façon thermoplastique les uns aux autres par leurs faces latérales adjacentes avec formation de joints de soudure plats (12, 13), ces joints de soudure plats (12, 13) constituant une couche intermédiaire de plastique peu poreuse qui se présente sous la forme d'une structure jointive, en treillis vue de dessus, renforçant la feuille de plastique (10). Cette feuille de plastique (11) peut être utilisée de préférence comme couche centrale dans des panneaux sandwichs (1).

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