Title:
MOISTURE-PERMEABLE WATERPROOF FABRIC AND PROCESS FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2010/126117
Kind Code:
A1
Abstract:
A moisture-permeable waterproof fabric which has a well-balanced combination of moisture permeability and waterproofing properties and has excellent strength, in particular, tensile strength, is provided without increasing environmental burden.
A synthetic-polymer solution comprising a synthetic polymer consisting mainly of a polyurethane, fine inorganic particles, and a polar organic solvent is applied to one surface of a fibrous fabric and then brought into contact with a gaseous phase in which waterdrops having an average particle diameter of 1-30 µm have been evenly dispersed, thereby making the synthetic polymer semisolid. The fabric is then immersed in water to completely solidify the polymer and thereby obtain a moisture-permeable waterproof fabric comprising the fibrous fabric and, united to one surface thereof, a microporous film of a single-layer structure comprising the synthetic polymer consisting mainly of a polyurethane (the number of micropores having a pore diameter of 0.1-5 µm is (5-200)×104/mm2 in a vertical cross-section, and the film has a tensile strength of 3-80 MPa, a moisture permeability as measured by the calcium chloride method of 6,000 g/m2∙24 hr or higher or a moisture permeability as measured by the potassium acetate method of 6,000 g/m2∙24 hr or higher, and a water pressure resistance of 60 kPa or higher).
Inventors:
KATO Yoshiharu (1-10-1, Keya, Fukui-sh, Fukui 60, 〒9188560, JP)
加藤 嘉治 (〒60 福井県福井市毛矢１丁目１０番１号 セーレン株式会社内 Fukui, 〒9188560, JP)
加藤 嘉治 (〒60 福井県福井市毛矢１丁目１０番１号 セーレン株式会社内 Fukui, 〒9188560, JP)
Application Number:
JP2010/057634
Publication Date:
November 04, 2010
Filing Date:
April 28, 2010
Export Citation:
Assignee:
SEIREN CO., LTD. (1-10-1, Keya Fukui-sh, Fukui 60, 〒9188560, JP)
セーレン株式会社 (〒60 福井県福井市毛矢１丁目１０番１号 Fukui, 〒9188560, JP)
KATO Yoshiharu (1-10-1, Keya, Fukui-sh, Fukui 60, 〒9188560, JP)
セーレン株式会社 (〒60 福井県福井市毛矢１丁目１０番１号 Fukui, 〒9188560, JP)
KATO Yoshiharu (1-10-1, Keya, Fukui-sh, Fukui 60, 〒9188560, JP)
International Classes:
D06M15/564; D06M11/05; D06M11/76; D06M15/00; D06M15/70; D06M23/06
Attorney, Agent or Firm:
TAKANO Mifune (Miyamasuzaka-Toho-Estate 602, 1-12-12 Shibuya, Shibuya-k, Tokyo 02, 〒1500002, JP)
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