Laminated polyarylene sulfide heat-resistant filter
AssigneeToray Industries, Inc.
InventorsTatsuya Mori, Takeshi Sugimoto, Reo Mitsunaga
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Abstract
A laminated polyarylene sulfide heat-resistant filter has a plurality of layers, at least including a first web layer that is a filtering surface, and a second web layer that is a non-filtering surface, the laminated polyarylene sulfide heat-resistant filter being characterized in that the first web layer contains 30 to 70 wt % of polyarylene sulfide fibers having a fineness of 0.5 to 1.2 dtex, and 30 to 70 wt % of polyarylene sulfide fibers having a fineness of 1.3 to 3.0 dtex taking a total of a weight percentages of the first web layer as 100 wt %, wherein the second web layer contains polyarylene sulfide fibers having a fineness of 1.0 to 4.0 dtex.
Claims16
A laminated polyarylene sulfide heat-resistant filter comprising a plurality of layers, at least including a first web layer that is a filtering surface, and a second web layer that is a non-filtering surface, wherein
- the first web layer consists of 30 to 70 wt % of polyarylene sulfide fibers having a fineness of 0.5 to 1.2 dtex, and 30 to 70 wt % of polyarylene sulfide fibers having a fineness of 1.3 to 3.0 dtex, based on a total of a weight percentages of the first web layer as 100 wt %, and
- the second web layer consists of polyarylene sulfide fibers having a fineness of 1.0 to 4.0 dtex.
Dependencies are inferred from the claim text.