Nissan Motor Company Limited

Tama-tlo Corporation

Nihon University School Jurdical Person

Shinkichi Torii

Kenji Uesugi

Tomohiro Ito

Yasuaki Kai

Takashi Seino

Masao Nakajima

Takashi Sawaguchi

Katsuhiko Suzuki

Shoichiro Yano

Kouichi Handa

Takashi Takei

Masatoshi Chikazawa

Masaaki Suzuki

Hiroaki Miura

Kouichi Nemoto

Koichi Handa

Kouji Namiki

A resin composition to be used as a material for a various part of an automotive vehicle. The resin composition comprises a copolymer (A) formed by copolymerization of a first unsaturated monomer (a) and a second mononer (b). The first unsaturated monomer has a functional group which is bondable by hydrogen bond to a hydroxyl group. The second monomer is copolymerizable with the first unsaturated monomer. A metal oxide (B) is dispersed in the copolymer and having hydroxyl groups and hydrophobic groups at surface of the metal oxide.

Resin composition, thermoplastic resin laminate, and production methods thereof

A resin composition of the present invention comprises a polymer having functional groups and a metal oxide surface modified to form functional groups at a surface of the metal oxide and dispersed uniformly in the polymer. The functional groups of the polymer and the functional groups of the metal oxide are ionically bondable to the metal oxide and the polymer, respectively, so that the polymer and the metal oxide are bonded by ionic bonds to each other.

Resin composition and its production process and uses

Seed holes (h) are formed by discharging a pressure medium (G) in a resin body (R) injected in a cavity ( ) of a die (MS1). By expanding the cavity ( ), supplying the pressure medium (G) to the seed holes (h), a size of the resin body (R) is increased, making the seed holes grow, to have a molded resin plate (Vr ) made of the resin body increased in the size and formed with the seed holes grown to internal voids (Vd).

Molded resin plate with internal voids and method and system for manufacturing a molded resin plate

A flat acoustic resin insulator (A) is one-shot molded, with a sound absorbing structure composed of a rigid-connected combination of a plurality of independent sound absorbing cells each constituted with a mold cavity (C) defined by a rigid lateral wall (E), a rigid bottom wall (F), and a vibratory top surface layer (H), and an opening (B) formed through the surface layer (H) for acoustic external communication of the mold cavity (C). The opening (B) cooperates with the mold cavity (C) to serve for resonance absorption of sounds, and the surface layer (H) covering the mold cavity (C) serves for film-vibratory absorption of sounds. Characteristic curves of the resonance sound-absorption and the film-vibratory sound-absorption have their peaks at different audible frequencies and their slopes overlapping therebetween, with a superimposed sound-absorbing effect over a wide frequency range.

Sound absorbing structure

Growing community of inventors

Kanagawa, Japan

Shinkichi Torii