Abstract: A polyvinyl alcohol (PVA)-based airbag base fabric aqueous coating material is described. A blocked polyisocyanate component (B-NCO) and liquid polyol are added to polyvinyl alcohol as a cross-linkage improver and a plasticizer, respectively. The B-NCO is composed of or based on a medium-molecular-weight form as a polyether-modified prepolymer, and used concurrently with a low-molecular-weight form in a small amount. The base fabric coating material is applied on one or both of the sides of a cloth of the base fabric and heated. The acquired coating film is a water-insoluble coat and the coating has excellent heat and moisture resistance (hot water resistance) and flexibility.

Abstract: A polyvinyl alcohol (PVA)-based airbag base fabric aqueous coating material is provided. Blocked polyisocyanate component (B-NCO) and liquid polyol are added, respectively, as a cross-linkage improver and a plasticizer. The B-NCO is composed of or based on a medium-molecular-weight form as a polyether-modified prepolymer, used concurrently with a low-molecular-weight form in a small amount. The base fabric coating material is applied on one or both of the sides of a cloth of the base fabric, and heated. Thus the acquired coating film is a water-insoluble coat and the coat shows excellent heat and moisture resistance (hot water resistance) and flexibility.

Abstract: The present invention relates to a polypropylene composition containing: 100 parts by weight of a blending mixture containing 35 to 45% by weight of a polypropylene copolymer having an ethylene content of 4 to 20% by weight, 7 to 12% by weight of high-density polyethylene, 40 to 50% by weight of an ethylene-?-olefin copolymer rubber, and 5 to 10% by weight of a compatibilizer, and 0.05 to 0.1 parts by weight of a flow adjuster.

Abstract: The present invention relates to a polypropylene composition containing: 100 parts by weight of a blending mixture containing 35 to 45% by weight of a polypropylene copolymer having an ethylene content of 4 to 20% by weight, 7 to 12% by weight of high-density polyethylene, 40 to 50% by weight of an ethylene-?-olefin copolymer rubber, and 5 to 10% by weight of a compatibilizer, and 0.05 to 0.1 parts by weight of a flow adjuster.

Abstract: A roll used for tensioning a canvas belt used to hold paper against a dryer. The roll includes a main cylindrical body formed of steel. A layer formed of a metal harder than steel is disposed over the outer surface of the main body. The metal layer is formed with a channel around its center so as to define two spaced roll end sections of a common diameter. A fluororesin layer is disposed in the metal layer channel and is shaped so as to have an outer surface of a diameter equal to that of the metal layer end sections.