US4267227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Press fabric resistant to wad burning
Assignee: Albany International Corp
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Filing: 1980-01-11
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Granted: 1981-05-12
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Expires: 2000-01-11
Abstract
Abstract The disclosure is of a composite papermakers felt made up of a base layer of a textile and a surface layer of high-temperature resistant fibers coated on the surface exposed portions with a high-temperature resistant, water-insoluble, synthetic, polymeric resin. The felt is useful in the wet press section of a papermaking machine. The disclosure is also of a method of manufacturing the felt of the invention.
Inventors
- 👤 Stanley C. Schiher
- 👤 Armen Renjilian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:06
CPC Classifications
B; B32; B32B; B32B29/00; B32B29/02; B32B5/00; B32B5/02; B32B5/024; B32B5/06; D; D21; D21F; D21F7/00; D21F7/08; D21F7/083; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23986; Y10T442/00; Y10T442/30; Y10T442/3707; Y10T442/3724; Y10T442/3764
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
65 words
A wad burning resistant wet press fabric, which comprises: a base layer of a textile; a surface layer for receiving a wet paper sheet, affixed to the base layer by needling, said surface layer comprising non-woven textile fibers of a high-temperature resistant, synthetic, polymeric resin; and a coating of a high-temperature resistant, synthetic, water-insoluble, polyamide-imide polymeric resin on the surface exposed portions of said fibers.
Claim 2
Dependent Claim
65 words
A wad burning resistant wet press fabric, which comprises: a base layer of a textile; a surface layer for receiving a wet paper sheet, affixed to the base layer by needling, said surface layer comprising non-woven textile fibers of a high-temperature resistant, synthetic, polymeric resin; and a coating of a high-temperature resistant, synthetic, water-insoluble, polyamide-imide polymeric resin on the surface exposed portions of said fibers.
Claim 3
Dependent Claim
13 words
The fabric of claim 1 wherein the base layer is a woven fabric.
Claim 4
Dependent Claim
11 words
The fabric of claim 1 wherein the fibers are polyaramid fibers.
Claim 5
Dependent Claim
77 words
A papermakers felt, which comprises; a base layer of interwoven, machine direction (warp) and cross-machine direction (weft) textile yarns; and a surface layer for receiving a wet paper sheet affixed to the base layer, said surface layer comprising a non-woven batt of high-temperature resistant staple textile fibers needled to the base layer; and a coating of a high-temperature resistant, water-insoluble, synthetic, polyamide-imide polymeric resin limited to the surface exposed portions of the fibers in the surface layer.
Claim 6
Dependent Claim
77 words
A papermakers felt, which comprises; a base layer of interwoven, machine direction (warp) and cross-machine direction (weft) textile yarns; and a surface layer for receiving a wet paper sheet affixed to the base layer, said surface layer comprising a non-woven batt of high-temperature resistant staple textile fibers needled to the base layer; and a coating of a high-temperature resistant, water-insoluble, synthetic, polyamide-imide polymeric resin limited to the surface exposed portions of the fibers in the surface layer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-11 | 1984-11-10 | 1985-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-11 | 1988-11-10 | 1989-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-11 | 1992-11-10 | 1993-05-12 | $7700.00 | Window Closed / Lapsed |