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US 2017/0138234 A1Published application
Holding material, method for producing same and gas treatment device using same
AssigneeNichias Corporation
InventorsKazutoshi ISOMURA, Hiroki NAKAMURA, Kiyoshi SATO, Isami ABE
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Abstract
A holding material includes a stack of a first mat and a second mat, the first mat including alumina fibers that include 60 wt % or more of alumina and 40 wt % or less of silica, and the second mat including silica fibers that include 60 wt % or more of silica and 40 wt % or less of alumina and having a surface pressure higher than that of the first mat as measured at a gap bulk density of 0.30 g/cm3.
Claims8
A holding material comprising a stack of a first mat and a second mat,
- the first mat comprising alumina fibers that comprise 60 wt % or more of alumina and 40 wt % or less of silica, and
- the second mat comprising silica fibers that comprise 60 wt % or more of silica and 40 wt % or less of alumina, and having a surface pressure higher than that of the first mat as measured at a gap bulk density of 0.30 g/cm3.
A method for producing a holding material comprising:
- producing a first mat using alumina fibers that comprise 60 wt % or more of alumina and 40 wt % or less of silica;
- producing a second mat using silica fibers that comprise 60 wt % or more of silica and 40 wt % or less of alumina, the second mat having a surface pressure higher than that of the first mat;
- and
- stacking and bonding the first mat and the second mat.
1 more element
Dependencies are inferred from the claim text.