PROCESS FOR PRODUCING SHEET-FORM SEALING MATERIAL - NIPPON VALQUA INDUSTRIES, LTD.

Title:

PROCESS FOR PRODUCING SHEET-FORM SEALING MATERIAL

Document Type and Number:

WIPO Patent Application WO/2002/026870

Kind Code:

A1

Abstract:

A process for producing a sheet-form sealing material which comprises: impregnating a nonwoven fabric with a liquid binder mixture comprising a rubber material or resin and a solvent or dispersion medium, while expelling the gas present in the nonwoven fabric; and heating and compressing the impregnated nonwoven fabric to vulcanize the rubber material or cure the resin. The impregnation is conducted, for example, by a method in which the nonwoven fabric which has been compressed is allowed to spontaneously recover its original shape in the liquid mixture. Alternatively, the impregnation may be conducted by the high-pressure spraying of the liquid mixture or by infiltration at a reduced pressure. Thus, a sheet-form sealing material reduced in strength anisotropy and excellent in gas-barrier properties, etc. is obtained.

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Inventors:

Nishida, Takahito c/o NIPPON VALQUA INDUSTRIES (LTD. Nara Factory 5-2 Technopark-Nara Kogyo Danch, Sumigawa-cho Gojo-shi Nara, 637-0014, JP)
Horii, Kenji c/o NIPPON VALQUA INDUSTRIES (LTD. TOKYO JIGYOSHO 1-9-13 Akasaka Minato-ku, Tokyo, 107-0052, JP)
Asahina, Minoru c/o NIPPON VALQUA INDUSTRIES (LTD. NARA FACTORY 5-2 Technopark-Nara Kogyo Danch, Sumigawa-cho Gojo-shi Nara, 637-0014, JP)
Sano, Tsuneshi c/o NIPPON VALQUA INDUSTRIES (LTD. SHINSHIRO FACTORY 150 Kawada Aza Honguudou Shinshiro-shi, Aichi, 441-1347, JP)
Takata, Kiyohito c/o NIPPON VALQUA INDUSTRIES (LTD. 5-2 Technopark-Nara Kogyo Danch, Sumigawa-cho Gojo-shi Nara, 637-0014, JP)
Kurokawa, Shinya c/o NIPPON VALQUA INDUSTRIES (LTD. NARA FACTORY 5-2 Technopark-Nara Kogyo Dach, Sumigawa-cho Gojo-shi Nara, 637-0014, JP)

Application Number:

PCT/JP2001/006542

Publication Date:

April 04, 2002

Filing Date:

July 30, 2001

Export Citation:

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Assignee:

NIPPON VALQUA INDUSTRIES, LTD. (1-1 Nishishinjuku 2-chome Shinjuku-ku, Tokyo, Tokyo, 163-0406, JP)
Nishida, Takahito c/o NIPPON VALQUA INDUSTRIES (LTD. Nara Factory 5-2 Technopark-Nara Kogyo Danch, Sumigawa-cho Gojo-shi Nara, 637-0014, JP)
Horii, Kenji c/o NIPPON VALQUA INDUSTRIES (LTD. TOKYO JIGYOSHO 1-9-13 Akasaka Minato-ku, Tokyo, 107-0052, JP)
Asahina, Minoru c/o NIPPON VALQUA INDUSTRIES (LTD. NARA FACTORY 5-2 Technopark-Nara Kogyo Danch, Sumigawa-cho Gojo-shi Nara, 637-0014, JP)
Sano, Tsuneshi c/o NIPPON VALQUA INDUSTRIES (LTD. SHINSHIRO FACTORY 150 Kawada Aza Honguudou Shinshiro-shi, Aichi, 441-1347, JP)
Takata, Kiyohito c/o NIPPON VALQUA INDUSTRIES (LTD. 5-2 Technopark-Nara Kogyo Danch, Sumigawa-cho Gojo-shi Nara, 637-0014, JP)
Kurokawa, Shinya c/o NIPPON VALQUA INDUSTRIES (LTD. NARA FACTORY 5-2 Technopark-Nara Kogyo Dach, Sumigawa-cho Gojo-shi Nara, 637-0014, JP)

International Classes:

F16J15/10; B29B15/12; C09K3/10; D04H1/64; D06M15/693; D06N7/00; F16J15/10; B29B15/10; C09K3/10; D04H1/64; D06M15/693; D06N7/00; (IPC1-7): C08J5/24; C09K3/10; D06M15/693

Attorney, Agent or Firm:

Suzuki, Shunichiro (SUZUKI & ASSOCIATES Gotanda Yamazaki Bldg. 6F, 13-6 Nishigotanda 7-chome Shinagawa-ku, Tokyo, 141-0031, JP)

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