US4151323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Papermakers belt
Assignee: Huyck Corp
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Filing: 1977-07-20
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Granted: 1979-04-24
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Expires: 1997-07-20
Abstract
Abstract Generally, this invention relates to multilayered belts for use in a papermaking machine which comprise a fibrous base layer the fibers of which are resin encapsulated, and a substantially resin-free fibrous surface layer in which the portions of the fibers which contact the fibers of the base layer are also substantially entirely encapsulated with resin. The invention includes within its scope a method of manufacturing such a belt.
Inventors
- 👤 Donald R. Christie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:52
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/02; B32B5/06; B32B5/08; B32B5/022; B32B5/024; B32B5/22; B32B5/24; B32B5/26; D; D21; D21F; D21F7/00; D21F7/08; D21F7/083; D21F7/086; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/02; B32B2262/0261; B32B2305/00; B32B2305/72; B32B2309/00; B32B2309/02; B32B2433/00; B32B2433/02; Y; Y10; Y10T; Y10T442/00; Y10T442/30; Y10T442/3707; Y10T442/3724; Y10T442/3764
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
70 words
A multilayered papermakers' belt which comprises a substantially resin-free fibrous surface layer which is joined by needling to the top side of a fibrous base layer having a top side and bottom side and in which the fibers of said base layer are substantially entirely encapsulated with resin and in which the portions of the surface layer fibers in contact with said base layer are substantially entirely encapsulated with resin.
Claim 2
Dependent Claim
70 words
A multilayered papermakers' belt which comprises a substantially resin-free fibrous surface layer which is joined by needling to the top side of a fibrous base layer having a top side and bottom side and in which the fibers of said base layer are substantially entirely encapsulated with resin and in which the portions of the surface layer fibers in contact with said base layer are substantially entirely encapsulated with resin.
Claim 3
Dependent Claim
84 words
A multilayered dryer felt which comprises a substantially resin-free non-woven fibrous surface layer which is joined by needling to the top side of a woven base layer having a top side and a bottom side and in which the fibers of the yarns of said base layer are substantially and entirely encapsulated with resin, and the portions of the fibers which comprise said surface layer and which are in contact with the fibers of said base layer fibers are substantially entirely encapsulated with resin.
Claim 4
Dependent Claim
84 words
A multilayered dryer felt which comprises a substantially resin-free non-woven fibrous surface layer which is joined by needling to the top side of a woven base layer having a top side and a bottom side and in which the fibers of the yarns of said base layer are substantially and entirely encapsulated with resin, and the portions of the fibers which comprise said surface layer and which are in contact with the fibers of said base layer fibers are substantially entirely encapsulated with resin.
Claim 5
Dependent Claim
79 words
A multilayered press felt which comprises a substantially resin-free non-woven fibrous surface layer which is joined by needling to the top side of a woven base layer having a top side and a bottom side and in which the fibers of the yarns of said base layer are substantially entirely encapsulated with resin, and the portions of the fibers which comprise said surface layer and which are in contact with said base layer fibers are substantially encapsulated with resin.
Claim 6
Dependent Claim
79 words
A multilayered press felt which comprises a substantially resin-free non-woven fibrous surface layer which is joined by needling to the top side of a woven base layer having a top side and a bottom side and in which the fibers of the yarns of said base layer are substantially entirely encapsulated with resin, and the portions of the fibers which comprise said surface layer and which are in contact with said base layer fibers are substantially encapsulated with resin.
Claim 7
Dependent Claim
63 words
A belt as recited in claim 1 wherein said base layer is woven from warp and weft yarns and said surface layer comprises a batt which is joined to said base layer by needling, and wherein the fibers of said base yarns and the batt fibers in contact with the fibers which comprise said yarns are substantially entirely encapsulated by a thermosetting resin.
Claim 8
Dependent Claim
22 words
A belt as recited in claim 4 wherein said surface and base layers comprise nylon and said resin is a phenolic resin.
Claim 9
Dependent Claim
51 words
A press felt which comprises a woven nylon batt surface layer joined to a woven nylon base layer by needling, the fibers of the yarns of said base layer yarns and the batt fibers in contact with the fibers which comprise said yarns being substantially entirely encapsulated by a thermosetting resin.
Claim 10
Dependent Claim
51 words
A press felt which comprises a woven nylon batt surface layer joined to a woven nylon base layer by needling, the fibers of the yarns of said base layer yarns and the batt fibers in contact with the fibers which comprise said yarns being substantially entirely encapsulated by a thermosetting resin.
Claim 11
Independent Claim
81 words
A method of manufacturing a multilayered papermakers' belt comprising the steps of producing a fibrous surface layer and a fibrous base layer having a top side and a bottom side, joining by needling the surface layer to said top side, and selectively applying controlled amounts of resin to said bottom side so as to substantially entirely encapsulate the fibers in said base layer and substantially entirely encapsulating the portions of the surface layer fibers in contact with said base layer fibers.
Claim 12
Independent Claim
81 words
A method of manufacturing a multilayered papermakers' belt comprising the steps of producing a fibrous surface layer and a fibrous base layer having a top side and a bottom side, joining by needling the surface layer to said top side, and selectively applying controlled amounts of resin to said bottom side so as to substantially entirely encapsulate the fibers in said base layer and substantially entirely encapsulating the portions of the surface layer fibers in contact with said base layer fibers.
Claim 13
Dependent Claim
22 words
A method as recited in claim 7 wherein said surface layer is joined to said base layer by needling said layers together.
Claim 14
Dependent Claim
21 words
A method as recited in claim 8 wherein said resin treated belt is cured at between 280° F. and 350° F.
Claim 15
Independent Claim
87 words
A method of manufacturing a multilayered press felt comprising the steps of weaving a base layer woven from multifilament nylon yarns having a top side and a bottom side, joining said top side to a non-woven nylon batt by needling, selectively applying controlled amounts of a thermosetting phenolic resin to said bottom side so as to substantially encapsulate the fibers in said yarns and substantially entirely encapsulating the portions of said batt in contact with said base layer, and curing said resin at about 350 degrees F.
Claim 16
Independent Claim
87 words
A method of manufacturing a multilayered press felt comprising the steps of weaving a base layer woven from multifilament nylon yarns having a top side and a bottom side, joining said top side to a non-woven nylon batt by needling, selectively applying controlled amounts of a thermosetting phenolic resin to said bottom side so as to substantially encapsulate the fibers in said yarns and substantially entirely encapsulating the portions of said batt in contact with said base layer, and curing said resin at about 350 degrees F.
Claim 17
Dependent Claim
82 words
A multilayered press felt which comprises a substantially resin-free non-woven fibrous nylon batt layer which is needled to the top side of a base layer woven from multifilament nylon yarns having a top side and a bottom side and in which the fibers of the yarns of the woven base layer are substantially entirely encapsulated with said resin and the portion of said batt fibers in contact with the fibers of said base layer yarns are substantially entirely encapsulated with said resin.
Claim 18
Dependent Claim
82 words
A multilayered press felt which comprises a substantially resin-free non-woven fibrous nylon batt layer which is needled to the top side of a base layer woven from multifilament nylon yarns having a top side and a bottom side and in which the fibers of the yarns of the woven base layer are substantially entirely encapsulated with said resin and the portion of said batt fibers in contact with the fibers of said base layer yarns are substantially entirely encapsulated with said resin.
References Cited (Backward Citations)
US2115581A
Cited
US3214327A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-23 | 1982-10-23 | 1983-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-23 | 1986-10-23 | 1987-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-23 | 1990-10-23 | 1991-04-24 | $7700.00 | Window Closed / Lapsed |