Sunstar Giken Kabushiki Kaisha

Sunstar Engineering Pte. Ltd.

The Furukawa Electric Co., Ltd.

Kiichi Yamashita

Masaharu Takada

Takuro Omachi

Motoya Kamiyama

Hiroyuki Nagata

Toshiya Okada

Yasuhiro Okuri

Tomiharu Okita

Tatsuya Wakamori

An object of the present invention is to provide a polyurethane composition, in which reduction in the strength of the foam is suppressed when the foam has been greatly deformed. The present invention relates to a polyurethane composition comprising a base resin and a curing agent, wherein the base resin comprises a compound (A-1) comprising a polyalkylene skeleton comprising neither an aromatic skeleton nor an alicyclic skeleton, and having two or more functional groups having an active hydrogen atom, a compound (A-2) comprising an aromatic skeleton and/or alicyclic skeleton, and having two or more functional groups having an active hydrogen atom, a blowing agent (B), and an amine-based catalyst (C); a polyurethane foam therefrom; and a method for soundproofing and reinforcing a vehicle.

Polyurethane composition

In order to provide a filling apparatus which is capable of advantageously delivering a foamable material having a necessary amount into a closed cross section of a vehicle body, in an embodiment of the present invention, there is provided a filling apparatus for filling a closed cross section of a vehicle body with a foamable material is provided, wherein the foamable material is a foamable two-liquid polyurethane material, wherein the filling apparatus comprises a delivering part for delivering the foamable material into the closed cross section of the vehicle body, and wherein the filling apparatus further comprises an input part into which a delivery command value and correction values to set a real delivery amount are input.

Filling apparatus for foamable material and filling method therefor

An apparatus for mixing a high-viscosity material with a gas and transferring the high-viscosity material mixed with the gas. The apparatus includes a piston pump, a high-viscosity material supply device for supplying a high-viscosity material to the cylinder, a gas supply device for supplying a gas to the cylinder, a piston drive device for driving the piston of the piston pump, a piston stopping device fixed in the cylinder for stopping the piston, a valve device for a high-viscosity material for selectively opening and closing a passage for communication between the high-viscosity material supply device and the cylinder of the piston pump, and a valve device for a gas for selectively opening and closing a passage for communication between the gas supply device and the cylinder of the piston pump.

Foaming method and apparatus therefor

A gas mixing/supplying device and a method includes of introducing a gas into a high-viscosity material. The method the steps of effecting a first suction stroke in which the piston () is moved in the cylinder (); supplying a high-viscosity material to the cylinder, using a suction force in the cylinder generated in said first suction stroke; stopping the piston after the first suction stroke; effecting a second suction stroke in which the piston is moved in the cylinder after the supply of the high-viscosity material; supplying a gas to the cylinder, using a suction force in the cylinder generated in the second suction stroke; effecting a pressurizing stroke in which the piston is moved in the cylinder after completion of the supply of the gas; and effecting a discharge stroke in which the high-viscosity material and the gas are discharged into a conduit. Then, the high-viscosity material is foamed under atmospheric pressure.

The present invention is a weld bonding method providing adhesion by both an adhesive and resistance spot welding, and includes application of an adhesive including a thermosetting epoxy resin, a latent curing agent and 1 to 15 vol % of one or more additives selected from the group consisting of conductive metals, metal oxides, metal carbides, metal nitrides, metal borides, and metal silicides, which are in the from of powder having a particle size of 10 .mu.m or less, or in the form of fragments or flakes having a thickness of 0.5 .mu.m or more and a size of 30 .mu.m or less.

Growing community of inventors

Osaka, Japan

Kiichi Yamashita