Abstract: A steel plate reinforcing sheet includes a restricting layer and a reinforcing layer, the reinforcing layer being formed of foam composition including styrene synthetic rubber, aromatic epoxy resin, and a foaming agent. A total thickness of the restricting layer and reinforcing layer is not more than 3.5 mm, and the steel plate reinforcing sheet is formed to have adhesion at 5° C. to an oiled, cold-rolled steel plate of not less than 2.0N/25 mm and also has bending strength of not less than 18N after being heated at 160° C. for twenty minutes. This ensures both sufficient adhesion to the steel plate and sufficient reinforcement of the same steel plate. Thus, this steel plate reinforcing plate, when adhesively bonded to a steel plate used in a variety of industrial machines properly and then foamed, can provide an effective reinforcement of the steel plate by forming the steel reinforcing plate bonded to the steel plate.

Abstract: Provided is a filling foam composition for filling a gap between members by foaming. The filling foam composition has a heat sagged length of 14 mm or less in (1) heat sag test without any breakage caused by (2) impact test.

Abstract: A reinforcing sheet, including a constraining layer and a reinforcing layer; a reinforced substrate, including the reinforcing sheet on a side of a substrate; and a method for reinforcing a substrate, including providing the reinforcing sheet on a side of the substrate. The reinforcing layer contains a foam composition containing (A) an epoxy resin, (B) an epoxy-modified rubber, and (C) a hydrophobic hydrocarbon oil. The reinforcing sheet may exhibit an improved resistance to water.

Abstract: The invention provides a steel plate reinforcing sheet that can provide improvement in adhesiveness as well as in reinforcement. In the steel plate reinforcing sheet comprising a restricting layer 1 and a reinforcing layer 2, the reinforcing layer 2 is formed of foam composition comprising styrene synthetic rubber, aromatic epoxy resin, and a foaming agent. Also, in the steel plate reinforcing sheet, a total thickness of the restricting layer 1 and reinforcing layer 2 is not more than 3.5 mm, and the steel plate reinforcing sheet is formed to have adhesion at 5° C. to an oiled, cold-rolled steel plate of not less than 2.0N/25 mm and also has bending strength of not less than 18N after heated at 160° C. for twenty minutes. This can satisfy both of the adhesion and the reinforcement which have been incompatible with each other hitherto, ensuring both sufficient adhesion to the steel plate and sufficient reinforcement of the same steel plate.

Abstract: In accordance with the present invention, a foamed structure having closed cells or both closed cells and open cells can be effectively used as a waterstop sealing material. In particular, a waterstop sealing material having excellent sealing properties can be provided. The waterstop sealing material comprises a foamed structure having closed cells or both closed cells and open cells, the foamed structure having a multi-layer pressure-sensitive adhesive layer provided on at least one side thereof, optionally through a base material, the multi-layer pressure-sensitive adhesive layer comprising as an outermost layer a layer made of a pressure-sensitive adhesive composition containing a polymer having a polycarbonate structure having a repeating unit represented by formula: wherein R represents a C2-20 straight-chain or branched hydrocarbon group and n represents a positive integer.

Abstract: In accordance with the present invention, a foamed structure having closed cells or both closed cells and open cells can be effectively used as a waterstop sealing material. In particular, a waterstop sealing material having excellent sealing properties can be provided.