Title:
SPIRAL GASKET
Document Type and Number:
WIPO Patent Application WO/2017/115399
Kind Code:
A1
Abstract:
Provided is a spiral gasket which exhibits room-temperature sealing properties with few leak paths when a sheet including inorganic fibres is used. This spiral gasket is provided with a gasket main body which is formed by superposing a filler material and a hoop material and winding said materials into a spiral. The spiral gasket is characterized in that: the filler material comprises a sheet including inorganic fibres; and the Rz value of the filler material according to JIS B 0031 (1994) is not more than 26 µm. The composition of the filler material comprises 74-85 wt% of an inorganic filler material, 2-20 wt% of inorganic fibres, 2-20 wt% of organic fibres, and 4-12 wt% of an organic binder (with the caveat that the total is 100 wt%).
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Inventors:
NAKAZATO SATOSHI (JP)
Application Number:
PCT/JP2015/086458
Publication Date:
July 06, 2017
Filing Date:
December 28, 2015
Export Citation:
Assignee:
NIHON VALQUA KOGYO KK (JP)
International Classes:
F16J15/12
Domestic Patent References:
| WO2014007364A1 | 2014-01-09 |
Foreign References:
| JPH0781131B2 | 1995-08-30 | |||
| JP2013117285A | 2013-06-13 | |||
| JP2007182950A | 2007-07-19 | |||
| JP2013199983A | 2013-10-03 | |||
| JP2011144881A | 2011-07-28 | |||
| JP2007127178A | 2007-05-24 | |||
| JPH07305772A | 1995-11-21 |
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
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