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US 5,631,304 AGranted
Method of manufacturing rigid foamed product
OwnerItsuro Hasegawainventor
Life of this patent
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Abstract
A method of manufacturing a rigid foamed product includes the steps of mixing a metal adhesive resin, a foaming agent, a foaming accelerator, a crosslinking agent, a monomer, and a fibrous material to formulate a foamable composition, arranging the foamable composition thus formulated in a cavity of a formed metal component, and heating the metal component with the foamable composition.
Claims4
A method of rigidifying a formed, metal component, comprising the steps of:
- mixing together:
- a metal adhesive resin selected from the group consisting of an ethylene-methyl acrylate copolymer resin, an ethylene-ethyl acrylate copolymer resin, an ethylene-butyl acrylate copolymer resin, and a mixture containing not less than 50% by weight of said ethylene-methyl acrylate copolymer resin, ethylene-ethyl acrylate copolymer resin or ethylene-butyl acrylate copolymer resin with not more than 50% by weight low density polyethylene;
- a foaming agent;
- a foaming accelerator;
- a crosslinking agent;
- a monomer selected from the group consisting of triallyl isocyanurate, triallyl cyanurate and trimethylolpropane trimethacrylate;
- and
- a fibrous material;
- to formulate a foamable composition;
- arranging the foamable composition in a cavity of the formed metal component;
- and
- heating the metal component with the foamable composition to foam, cross-link and rigidify the foamable composition.
9 more elements
Dependencies are inferred from the claim text.