Laminate and reinforcing sheet
AssigneeNitto Denko Corporation
InventorsTakahiro Fujii, Toru Tagami
Life of this patent
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Abstract
Provided is a laminate that is excellent in flexibility and has a high bending strength. Also provided is a reinforcing sheet including such laminate. The laminate of the present invention is a laminate including an adhesive layer and a constraining layer, wherein the constraining layer includes an impregnated layer obtained by impregnating a multilayer base material, which is obtained by laminating a plurality of reinforcing fiber sheet-shaped products in each of which reinforcing fiber yarns are arranged in parallel and knitting the products with a stitching thread to integrate the products, with a thermosetting resin composition. The reinforcing sheet of the present invention includes the laminate of the present invention.
Claims13
A laminate, comprising:
- an adhesive layer;
- and
- a constraining layer,
- wherein the constraining layer includes an impregnated layer obtained by impregnating a multilayer base material, which is obtained by laminating a plurality of reinforcing fiber sheet-shaped products in each of which reinforcing fiber yarns are arranged in parallel and knitting the products with a stitching thread to integrate the products, with a thermosetting resin composition,
- wherein the plurality of reinforcing fiber sheet-shaped products in the multilayer base material include a reinforcing fiber sheet-shaped product layer (1) and a reinforcing fiber sheet-shaped product layer (2) in which lengthwise directions of the reinforcing fiber yarns are different from lengthwise directions of the reinforcing fiber yarns that the reinforcing fiber sheet-shaped product layer (1) has by 30° or more, and the reinforcing fiber sheet-shaped product layer (1) has a weight equal to or more than a weight of the reinforcing fiber sheet-shaped product layer (2), and
- wherein a weight ratio between the reinforcing fiber sheet-shaped product layer (1) and the reinforcing fiber sheet-shaped product layer (2) is from 9:1 to 5:5.
Dependencies are inferred from the claim text.