Patent EP0044053A1 successfully refreshed from Google Patents.
EP0044053A1
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EP
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Double layer endless papermaking fabric
Assignee: Huyck Corp
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Filing: 1981-07-10
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Granted: —
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Expires: 2001-07-10
Abstract
Abstract A double layer endless woven forming fabric having a sheet surface fabric structure comprising relatively fine warp (1) and filling yarns (2) exhibiting substantially uniform crimp in both directions, and a relatively coarse wear side fabric structure having woven warp (3) and filling yarns (4) exhibiting crimp predominately in the warp yarns, the layers being joined by interlacing the warp yarns (3) of the wear surface fabric structure with the filling yarns (2) of the sheet surface fabric structure.
Inventors
- 👤 Charles E. Thompson
- 👤 Samuel H. Herring
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 10:19
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/0027; D21F1/0036; D03; D03D; D03D3/00; D03D3/04; F; F04; F04C; F04C2/00; F04C2/08; F04C2/082; F04C2/084; Y; Y10; Y10S; Y10S162/00; Y10S162/903
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
111 words
A double layer endless woven papermaking fabric having two functional sides, the first side comprising a sheet surface fabric structure having machine direction and cross-machine direction yarns woven with substantially uniform crimp in both directions, the opposite side of the fabric comprising a relatively coarse wear surface fabric structure having woven machine direction and cross-machine direction yarns, the two structures being joined together by interlacing the machine direction yarns of the wear surface fabric structure with the cross-machine yarns of the sheet surface fabric structure, whereby to provide a double layer fabric characterized by a sheet side exhibiting bi-crimp characteristics and a machine side exhibiting enhanced wear characteristics and stretch resistance.
Claim 2
Dependent Claim
111 words
A double layer endless woven papermaking fabric having two functional sides, the first side comprising a sheet surface fabric structure having machine direction and cross-machine direction yarns woven with substantially uniform crimp in both directions, the opposite side of the fabric comprising a relatively coarse wear surface fabric structure having woven machine direction and cross-machine direction yarns, the two structures being joined together by interlacing the machine direction yarns of the wear surface fabric structure with the cross-machine yarns of the sheet surface fabric structure, whereby to provide a double layer fabric characterized by a sheet side exhibiting bi-crimp characteristics and a machine side exhibiting enhanced wear characteristics and stretch resistance.
Claim 3
Dependent Claim
39 words
The double layer papermaking fabric claimed in claim 1 wherein the machine direction yarns of the sheet surface fabric structure have a 10-40 % lower modulus of elasticity than the cross-machine direction yarns of the sheet surface fabric structure.
Claim 4
Dependent Claim
29 words
The double layer papermaking fabric claimed in claim 2 wherein the machine direction yarns of the sheet surface fabric structure have an elongation of from 28 to 80 %.
Claim 5
Dependent Claim
39 words
The double layer papermaking fabric claimed in claim 3 wherein the elongation of the machine direction yarns of the sheet surface fabric structure is greater than the elongation of the cross-machine direction yarn of the sheet surface fabric structure.
Claim 6
Dependent Claim
38 words
The double layer papermaking fabric claimed in claim 4 wherein the elongation of the machine direction yarns in the sheet surface fabric structure is greater than the elongation of the machine direction yarns in the.wear surface fabric structure.
Claim 7
Dependent Claim
47 words
The double layer papermaking fabric claimed in claim 5 wherein crimp in the coarse wear surface fabric structure is essentially confined to the cross-machine direction yarns, whereby to maintain the alignment of the machine direction yarns in the wear side fabric yarns and decrease machine direction stretch.
Claim 8
Dependent Claim
31 words
The double layer papermaking fabric claimed in claim 6 wherein the yarns in the wear surface fabric structure are of larger diameter than the yarns in the sheet side fabric structure.
References Cited (Backward Citations)
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