MANUFACTURE OF FIBER MOLDING

Japanese Patent JPH01190451

A

PURPOSE:To obtain a fiber mold for thermal molding which is light in weight with a high sound absorbing property and superior bending strength, by laminating a mat of inorganic fibers with a resin sheet made of thermoplastic resins different in melt viscosity, heating and compressing said laminated member in the state that said resin sheet is being melted. CONSTITUTION:A resin sheet formed by mixing thermoplastic resins of different melt viscosity is laminated on one surface of a mat mainly composed of inorganic fibers. For the inorganic fibers, glass fibers, rock wool, ceramic fibers or carbon fibers etc. are used. The length of the fibers is set to be 5-200mm in consideration of the moldability of the mat. For the thermoplastic resins constituting the resin sheet, polyethylene, polypropylene, polyester or the like is employed. The thermoplastic resin having the largest melt viscosity among not less than two kinds of the thermoplastic resins has the melt viscosity, namely, A poise of 5,000-50,000, and the thermoplastic resin having the smallest melt viscosity thereamong has the melt viscosity, namely, B poise of not more than 20,000. Furthermore, each melt viscosity is so selected as to satisfy the relation A>1.5B. The laminated member is heated at the melting temperature of the resin sheet, and then compressed and molded by a press molding.

TSUKAMOTO MASAHIRO
TAKEMOTO ISAO

JP1538288A

July 31, 1989

January 26, 1988

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SEKISUI CHEMICAL CO LTD

B60R13/02; B32B27/12; D06M15/00; D06M101/00; D06M101/40; (IPC1-7): B32B27/12; B60R13/02; D06M15/00

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