US5151316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-layered papermaker's fabric for thru-dryer application
Assignee: Asten Inc
•
Filing: 1990-10-02
•
Granted: 1992-09-29
•
Expires: 2010-10-02
Abstract
Abstract A multi-layer fabric for carrying and forming an embossed paper web is provided which comprises two separate woven fabric layers which are joined together, preferably during weaving. The top fabric layer is a very coarse mesh open fabric which supports the web and assists in forming the embossed characteristic of the web. The top layer is connected to a base fabric layer which is a substantially finer mesh. The layers are preferably interconnected by binder strands which interweave as structural warps or shutes of the finer mesh fabric layer.
Inventors
- 👤 Thomas B. Durkin
- 👤 Frank Biasone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:16
CPC Classifications
D; D21; D21F; D21F11/00; D21F11/006; D21F1/00; D21F1/0027; D21F1/0036; Y; Y10; Y10S; Y10S162/00; Y10S162/902; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24942; Y10T428/2495; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/153
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
126 words
In a papermaking apparatus having at least one thru-dryer papermaker's fabric having a paper carrying surface for forming and transporting an aqueous paper web, the improvement wherein the thru-dryer papermaking fabric comprises: a woven base fabric layer; a woven upper fabric layer defining the paper carrying surface which assists in the further forming of the web; said base layer being woven in a substantially finer mesh than said upper layer from yarns having a significantly smaller size than the upper layer yarns; and means for interconnecting said upper and base layers into a unitary fabric such that the interconnection of said base layer with said upper woven layer provides structural support and stability to said upper woven layer as it forms and transports the aqueous web.
Claim 2
Dependent Claim
126 words
In a papermaking apparatus having at least one thru-dryer papermaker's fabric having a paper carrying surface for forming and transporting an aqueous paper web, the improvement wherein the thru-dryer papermaking fabric comprises: a woven base fabric layer; a woven upper fabric layer defining the paper carrying surface which assists in the further forming of the web; said base layer being woven in a substantially finer mesh than said upper layer from yarns having a significantly smaller size than the upper layer yarns; and means for interconnecting said upper and base layers into a unitary fabric such that the interconnection of said base layer with said upper woven layer provides structural support and stability to said upper woven layer as it forms and transports the aqueous web.
Claim 3
Dependent Claim
56 words
A papermaker's fabric according to claim 1 wherein said interconnecting means comprises pairs of binding yarns of substantially the same size as the bottom layer warp yarns, interwoven with said bottom layer substantially within the repeat of the bottom layer in a single warp yarn location and interweaving with selected individual yarns of said upper layer.
Claim 4
Dependent Claim
41 words
A papermaker's fabric according to claim 2 wherein said woven base fabric layer is woven with at least twice the number of warp and shute yarns per inch than the warp and shute yarns per inch of said upper fabric layer.
Claim 5
Dependent Claim
30 words
A papermaker's fabric according to claim 3 wherein said base fabric layer is woven in a plain weave and said upper fabric layer is woven in a 5-shed broken weave.
Claim 6
Dependent Claim
57 words
A papermaker's fabric according to claim 4 wherein said woven base fabric layer is woven between 70 and 28 warp yarns per inch and between 64 and 24 shute yarns per inch and said woven upper fabric layer is woven between 35 and 14 warp yarns per inch and between 32 and 12 shute yarns per inch.
Claim 7
Dependent Claim
39 words
A papermaker's fabric according to claim 5 wherein said binding yarn pairs define every tenth warp yarn on said base layer and are disposed after every fifth warp yarn of said top layer, binding every third top shute yarn.
Claim 8
Dependent Claim
40 words
A papermaker's fabric according to claim 1 wherein said woven base fabric layer is woven with approximately twice the number of warp and shute yarns per inch than the warp and shute yarns per inch of said upper fabric layer.
Claim 9
Dependent Claim
30 words
A papermaker's fabric according to claim 1 wherein said base fabric layer is woven in a plain weave and said upper fabric layer is woven in a 5-shed broken weave.
Claim 10
Dependent Claim
57 words
A papermaker's fabric according to claim 1 wherein said woven base fabric layer is woven between 70 and 28 warp yarns per inch and between 64 and 24 shute yarns per inch and said woven upper fabric layer is woven between 35 and 14 warp yarns per inch and between 32 and 12 shute yarns per inch.
Claim 11
Dependent Claim
28 words
A papermaker's fabric according to claim 1 wherein said fabric is surfaced by abrading the yarns of said upper layer to provide from 15% to 40% contact area.
References Cited (Backward Citations)
DE232715C
Cited
GB1063672A
Cited
FR2122596A3
Cited
EP0069101A2
Cited
US4503113A
Cited
DE3224236A1
Cited
EP0426288A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-29 | 1996-03-30 | 1996-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-29 | 2000-03-30 | 2000-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-29 | 2004-03-30 | 2004-09-29 | $7700.00 | Window Closed / Lapsed |