Abrasion-resistant composite sheet

D - Textiles – Paper – 06 – N

Patent

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Details

D06N 7/00 (2006.01) B32B 3/00 (2006.01) B32B 3/26 (2006.01) B32B 33/00 (2006.01)

Patent

CA 2220253

A composite sheet having a surface layer (17) of resin-impregnated pile-like vertical fibers (10) provides the sheet with unusually high resistance to abrasive wear. The surface layer (17) has a combination of characteristics that includes an effective pile-fiber concentration of 0.1 to 0.5 g/cm3, an over-all density of at least 0.4 g/cm3, a resin content of 25 to 90 weight % and a pile parameter of at least 0.3 grams/cm3. Preferably, the pile-like fibers (10) contained within the surface layer (17) are derived from particular contracted knit fabrics or contracted two-bar stitchbonded fabrics (20).

La présente invention décrit une feuille composite dotée d'une couche de surface (17) composée de fibres verticales imprégnées de résine donnant l'aspect d'être empilées et offrant à la feuille un niveau particulièrement élevé de résistance à l'abrasion. La couche de surface (17) présente entre autres caractéristiques une concentration réelle de fibres empilées de 0,1 à 0,5 g/cm?3¿, une densité globale d'au moins 0,4 g/cm?3¿, une teneur en résine de 25 à 90 % en poids et un paramètre de piles d'au moins 0,3 grammes/cm?3¿. Les fibres à aspect empilé (10) contenues dans la couche de surface (17) sont issues de préférence de tissus maillés contractés ou de tissus contractés de couture-tricotage à double couture (20).

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