Sheet for molding fiber-reinforced resin and method for...

B - Operations – Transporting – 29 – D

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B29D 7/01 (2006.01) B29C 35/12 (2006.01) B29C 70/08 (2006.01) B29C 70/50 (2006.01) B32B 27/04 (2006.01) B32B 27/08 (2006.01) B32B 27/16 (2006.01) B29C 35/08 (2006.01)

Patent

CA 2052273

This invention provides a moldable fiber reinforced resin sheet which is suitable for preparing a fiber-reinforced resin molding having excellent coloured conditions. The invention also relates to a method for producing the sheet. The moldable sheet of the present invention comprises a fiber- reinforced resin layer and a coloured surface resin layer laminated to the first layer and has, in the fiber-reinforced resin layer, a fiber-reinforced coloured resin layer adjacent to said surface resin layer. The fiber-reinforced coloured resin layer is coloured in a colour similar to that of the surface resin layer, and has a fiber-reinforced transparent resin layer arranged on the surface of the side opposite to the surface resin layer. The transparent resin layer being curable with ultraviolet radiation. The first method for producing the sheet comprises carrying out a viscosity- thickening treatment on a resin layer first laminated out of the fiber-reinforced coloured resin layer and fiber-reinforced transparent resin layer. The second method for producing the sheet comprises forming a fiber-reinforced transparent resin layer and, on this layer, laminating a fiber-reinforced coloured resin layer without the viscosity-thickening treatment on the transparent resin layer, and then, laminating a surface resin layer, if necessary, after carrying out viscosity-thickening treatment on the fiber-reinforced resin layers. The third method for producing the sheet comprises forming a surface resin layer and carrying out a viscosity- thickening treatment on this layer, and independently, after forming a fiber-reinforced transparent resin layer, on this layer, laminating a fiber-reinforced coloured resin layer without the viscosity-thickening treatment on the transparent resin layer, and then, laminating the surface resin layer on the fiber-reinforced coloured resin layer.

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