CA1159293A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Two-ply screen for the sheet forming zone of a papermaking machine
Assignee: Wangner (hermann) & Co KG GmbH
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Filing: 1981-09-22
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Granted: 1983-12-27
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Expires: 2001-09-22
Abstract
Abstract ABSTRACT OF THE DISCLOSURE A two-ply screen having a top and a bottom layer and useful for the sheet forming zone of a papermaking machine. There are weft filaments arranged in pairs, one over the other and warp filaments. All the warp filaments are woven into the top layer of the screen but only part of the warp filaments are woven also into the bottom layer of the screen. The screen has good resistance to abrasion and thus a long life. It leaves only slight marks on the paper sheet and has good stability.
Inventors
- 👤 Georg Borel
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-06 15:24
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/0027; D21F1/0036; Y; Y10; Y10S; Y10S162/00; Y10S162/90
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
90 words
A two-ply fabric for the sheet-forming zone of a papermaking machine comprising a plurality of weft filaments arranged in pairs one over the other and a plu-rality of warp filaments, a first part of the warp filament being woven into the top ply as well as into the bottom ply of said fabric while a second portion of the warp filaments is woven only into the top ply of said fabric, the number of warp filaments in the top ply being at least twice that contained in the bottom ply.
Claim 2
Dependent Claim
90 words
A two-ply fabric for the sheet-forming zone of a papermaking machine comprising a plurality of weft filaments arranged in pairs one over the other and a plu-rality of warp filaments, a first part of the warp filament being woven into the top ply as well as into the bottom ply of said fabric while a second portion of the warp filaments is woven only into the top ply of said fabric, the number of warp filaments in the top ply being at least twice that contained in the bottom ply.
Claim 3
Dependent Claim
20 words
A fabric according to claim 1, wherein the lower weft filaments are at least 20% thicker than the warp filaments.
Claim 4
Dependent Claim
20 words
A fabric according to claim 1, wherein the lower weft filaments are at least 30% thicker than the warp filaments.
Claim 5
Dependent Claim
31 words
A fabric according to claim 1, wherein the crimps of the warp filaments on the backing side are always disposed in pairs thereby doubling the crimping effect of said warp filaments.
References Cited (Backward Citations)
No citation records indexed.
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