Sekisui Chemical Co., Ltd.

Sekisui Kagaku Kogyo Kabushiki Kaisha

Michitaka Tsujimoto

Masashi Okabe

Katsuo Matsuzaka

Koji Yamaguchi

Masanori Hirata

Masafumi Ishiyama

Takamasa Fukuoka

Isao Higuchi

Tomoyuki Kobayashi

Hiroshi Abe

Masaru Koike

Yoshihiro Inui

Shigeru Ogasawara

Eiji Okada

Takashi Oguchi

Hitoshi Shirato

Haruki Katata

Yukihiro Hara

Kazuo Yamagata

Satoshi Nishijima

Hiroyuki Kurio

A thermosetting furan resin composition comprising furan based resin (A), curing catalyst (B), and additive (C) that is a normal salt including a strong acid and a strong base is offered. The abovementioned additive (C) preferably has a solubility in water of 30 g/100 g H2O at 20&#xb0; C. Furthermore, the abovementioned additive (C) is at least one selected from the group consisting of sodium chloride, potassium chloride, lithium chloride, sodium bromide, potassium bromide, lithium bromide, sodium sulfate, potassium sulfate, lithium sulfate, sodium nitrate, potassium nitrate, and lithium nitrate, or a mixture thereof. The content of the abovementioned additive (C) is 0.2-10 parts by weight based on the aforementioned furan based resin (A) being 100 parts by weight.

Thermosetting furan resin composition and furan resin laminated body using the same

A polyolefin resin drawn sheetis laminated on at least one face of a sheet-form core materialhaving a density of 30 to 300 kgf/m. At this time, a sheet or filmmade of a bonding synthetic resin or rubber having a flow starting temperature lower than the thermal deformation temperature of the core materialand the melting point of the drawn sheetis interposed between the core materialand the drawn sheet. The resultant stack product is heated to not less than the flow starting temperature of the synthetic resin or the rubber and not more than the thermal deformation temperature of the core materialand the melting point of the drawn sheet. At the same time of or after the heating, the stack product is pressed to apply a compression strain of 0.01 to 10% to the core material

Method and device for producing laminated composite

A multi-layer sheet of the present invention comprises a thermoplastic resin foam sheet, a reinforcing sheet layered on integrated with at least one side of the thermoplastic resin foam sheet; the reinforcing sheet being formed by a non-woven fabric which comprises non-meltable fibers which are interwound with one another and which are bound together with a thermoplastic resin, the thermoplastic resin foam sheet having an aspect ratio Dz/Dxy of bubbles of 1.2 or more, and an expansion ratio of 5&#x2dc;50 cc/g, and therefore the sheet is excellent in bending strength, compressive strength, thermo-forming property and dimensional stability as well as lightweight property, and so can ideally be used for an upholstery material for vehicles, a heat-insulation material, a buffer material and the like.

Multi-layer sheet, a manufacturing method of the multi-layer sheet and a molding method of the multi-layer sheet

An object of the present invention is to provide a composite foam having a high compressive strength. A polyolefin resin is melted and kneaded with a modifying monomer to react them. A thermally decomposable chemical foaming agent is added to the obtained modified resin, and the mixture is kneaded. The obtained foamable resin composition is shaped into a sheet. A sheet-like facing material ( ) having a strength sufficient to inhibit the foamable sheet from expanding in in-plane directions during thermal foaming is laminated on at least one side of the foamable sheet. The obtained foamable composite sheet is thermally foamed to produce a composite foam ( ) having rugby-ball-shaped cells ( ) oriented in the direction of the sheet thickness.

Process for producing foamable composite polyolefin resin sheet and composite foam

A resin foamed product is formed of a resin, and closed cells dispersed in the resin. The resin with the closed cells therein has a shape-recoverable property at an ambient temperature, a closed cell rate higher than 30% and a compression permanent set lower than 10%. Thus, when contraction takes place in the resin with the closed cells, after a predetermined time has passed without providing an outer stimulation to the resin, a shape of the resin foamed product formed of the resin with the closed cells is automatically recovered at least in one direction without equally expanding in all directions.

Shape-recoverable resin foamed product

Growing community of inventors

Kyoto, Japan

Michitaka Tsujimoto