Sekisui Chemical Co., Ltd.

Sekisui Kagaku Kogyo Kabushiki Kaisha

Yoshihiro Inui

Koji Taniguchi

Masashi Okabe

Katsunori Takahashi

Nobuhiko Inui

Isao Higuchi

Michitaka Tsujimoto

Kazuhiro Sawa

Kensuke Tsumura

Kouzou Makino

Takamasa Fukuoka

Zenei Hayashi

Takehiro Nakamura

Kazuo Yamagata

Shintarou Umeyama

A multilayer tube is provided which suppresses the amount of calcium and organic component leaching to a low level and which can be realized as a tube that has mechanical properties at 60&#xb0; C. This multilayer tube includes a first polyolefin resin layer configuring the innermost layer, and a second polyolefin resin layer arranged outside of the first polyolefin resin layer; the amount of calcium leaching, measured in accordance with SEMI F-57, of the material of the first polyolefin resin layer is less than 30 &#x3bc;g/m2; the ratio of the thickness of the first polyolefin resin layer to the total thickness of the first polyolefin resin layer and the second polyolefin resin layer is 0.011-0.17. By means of this configuration, it is possible to suppress the amount of leaching of calcium and organic substances to a low level, and to realize a pipe having a strength that takes into account a 60&#xb0; C. use environment.

Multilayer tube

There is provided a thermoplastic resin film which is high in tear resistance. The thermoplastic resin film according to the present invention is provided with a plurality of first thermoplastic resin layers each containing a thermoplastic resin and a plurality of second thermoplastic resin layers each containing a thermoplastic resin, and has a multilayer structure in which the first and second thermoplastic resin layers are laminated in the thickness direction, the number of laminations in total of the first and second thermoplastic resin layers in the thickness direction is greater than or equal to 5, the ratio of the total thickness of the first thermoplastic resin layers to the total thickness of the second thermoplastic resin layers is greater than 1, the tensile modulus of elasticity of the respective first thermoplastic resin layers is less than or equal to 30 MPa, and the tensile modulus of elasticity of the respective first thermoplastic resin layers is greater than or equal to 280 MPa.

Thermoplastic resin film and laminated glass

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

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Kyoto, Japan

Yoshihiro Inui