(19)
(11)EP 1 925 760 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
14.10.2015 Bulletin 2015/42

(43)Date of publication A2:
28.05.2008 Bulletin 2008/22

(21)Application number: 07119120.9

(22)Date of filing:  23.10.2007
(51)International Patent Classification (IPC): 
E04C 2/296(2006.01)
(84)Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK RS

(30)Priority: 26.10.2006 JP 2006291867
04.12.2006 JP 2006327661
17.07.2007 JP 2007185241
31.08.2007 JP 2007226121
31.08.2007 JP 2007226140

(71)Applicant: Kanaflex Corporation Inc.
Osaka-shi, Osaka 530-6017 (JP)

(72)Inventor:
  • Kanao, Shigeki
    Hyogo 662-0002 (JP)

(74)Representative: Vossius & Partner Patentanwälte Rechtsanwälte mbB 
Siebertstrasse 3
81675 München
81675 München (DE)

  


(54)Lightweight Cement Panel


(57) The invention relates to a lightweight cement panel (1) which provides light weight, high strength, and durability, is free of degraded strength or deformation due to water absorption or fluctuation of ambient temperature, etc., provides satisfactory processing capabilities including nailing, etc. and can be used as a concrete formwork panel, floor material, wall material, ceiling material, and others of architectural structures.
A panel proper (2) is formed by a porous compact (8) produced by filling, curing, and solidifying a mixture prepared by kneading cement, water, reinforcing fibers, and foam obtained by prefoaming a foaming agent in a hermetically sealed cement form block block, contains the reinforcing fibers (7) and foam in a dispersion state in the compact (8), and provides the specific gravity within the range between 0.5 and 1.0. The surface of this panel proper (2) is integrally covered with a surface reinforcing sheet (4) comprising woven cloth or unwoven cloth, and the surface is further integrally covered by a surface protection layer (5).







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