Composite plasterboard

Details Composite plasterboard Composite plasterboard

B - Operations, Transporting

32

B

B32B 13/02 (2006.01) B28B 1/42 (2006.01) B28B 1/52 (2006.01) B28B 19/00 (2006.01) C04B 16/12 (2006.01) C04B 18/24 (2006.01) C04B 28/14 (2006.01) E04C 2/04 (2006.01)

Patent

CA 2213801

A composite gypsum board comprising a gypsum material and a filler, characterized in that the filler contains paper chips and/or a paper chip assembly as the essential component, the paper chips and/or the chip assembly being arranged substantially parallel to the plane perpendicular to the thicknesswise direction of the board. A process for preparing the board is also provided. The board has markedly improved bending strength and resistance to pulling out of screws and nails. Further, it is valuable also from the viewpoint of effective utilization of wastes, a problem awaiting solution in recent years.

L'invention concerne une plaque de plâtre composite comprenant un matériau de plâtre et une charge de remplissage. Cette plaque se caractérise en ce que la charge de remplissage contient de petits morceaux de papier et/ou un ensemble de petits morceaux de papier comme principal constituant. Ces morceaux de papier sont disposés de manière sensiblement parallèle au plan perpendiculaire au sens d'épaisseur de la plaque. L'invention traite également d'un procédé de préparation de la plaque. Cette plaque présente une meilleure résistance à la flexion ainsi qu'une résistance supérieure à l'arrachage des vis et des clous. En outre, elle est avantageuse car elle permet de récupérer les déchets, ce qui constituera un problème crucial dans les années à venir.

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