Patent ID: 8092906

Claim:
An adhesive sheet for steel plate comprising: a restricting layer; and a resin layer, wherein the restricting layer comprises a resin-coated glass fiber cloth made by weaving glass fiber bundles, which are formed by bundling a plurality of glass filaments, into a glass fiber cloth and impregnating water dispersed epoxy resin composition in the glass fiber cloth, the resin-coated glass fiber cloth having air permeability of not more than 0.5 cm 3 /cm 2 /sec. and a permeability rate of the epoxy resin composition to the glass fiber bundles in the range of 20-70% and wherein the epoxy resin composition in the resin-coated glass fiber cloth comprises 1-10 parts by weight of acrylic acid polymer as a thickening agent per 100 parts by weight of the epoxy resin composition and is impregnated in the glass fiber cloth in a proportion of 2-15 parts by weight of the epoxy resin composition per 100 parts by weight of the glass fiber cloth; and wherein a mixing ratio of the acrylic acid polymer to a total amount of water dispersion of the epoxy resin composition is in a range of 0.2-2.0 weight %.