Patent US3881074A successfully refreshed from Google Patents.
Patent US4356059A successfully refreshed from Google Patents.
US4356059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High bulk papermaking system
Assignee: Fort James Corp
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Filing: 1981-11-16
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Granted: 1982-10-26
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Expires: 2001-11-16
Abstract
Abstract A system for producing a bulky, soft and absorbent paper web wherein the web is creped from a first creping surface, passes through a nip formed between a dewatering felt and imprinting fabric of a specified character and is applied to and creped from a second creping surface.
Inventors
- 👤 Ronald E. Hostetler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:36
CPC Classifications
D; D21; D21F; D21F11/00; D21F11/006
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
189 words
A method for manufacturing a bulky, soft and absorbent paper web comprising the steps of: forming an uncompacted web of principally lignocellulosic fibers on a forming surface; transferring said web to the surface of a first heated cylinder; compacting said web substantially overall while on said first heated cylinder surface to partially dewater said web; conveying said partially dewatered web to a wet embossing nip formed between a dewatering felt and an open mesh imprinting fabric formed of woven filaments having spaced compaction elements and defining voids between the filaments; while the web is in said wet embossing nip impressing said web against said fabric whereby from about 5% to about 50% of said web will be compacted by said compaction elements and from about 50% to about 95% of said web will be impressed into the voids; retaining the web on said imprinting fabric after the web passes through the wet embossing nip; removing the web from the imprinting fabric before final drying thereof by applying the web to a creping surface of a second heated cylinder; and creping the web from said second heated cylinder creping surface.
Claim 2
Independent Claim
189 words
A method for manufacturing a bulky, soft and absorbent paper web comprising the steps of: forming an uncompacted web of principally lignocellulosic fibers on a forming surface; transferring said web to the surface of a first heated cylinder; compacting said web substantially overall while on said first heated cylinder surface to partially dewater said web; conveying said partially dewatered web to a wet embossing nip formed between a dewatering felt and an open mesh imprinting fabric formed of woven filaments having spaced compaction elements and defining voids between the filaments; while the web is in said wet embossing nip impressing said web against said fabric whereby from about 5% to about 50% of said web will be compacted by said compaction elements and from about 50% to about 95% of said web will be impressed into the voids; retaining the web on said imprinting fabric after the web passes through the wet embossing nip; removing the web from the imprinting fabric before final drying thereof by applying the web to a creping surface of a second heated cylinder; and creping the web from said second heated cylinder creping surface.
Claim 3
Dependent Claim
37 words
The method of claim 1 comprising the additional step of directing a heated fluid through said web and said imprinting fabric while said web is being retained on said imprinting fabric to further partially dewater said web.
Claim 4
Dependent Claim
42 words
The method of claim 1 wherein said step of compacting the web overall while on the surface of said first heated cylinder is accomplished by passing said web through a plurality of compacting nips partially defined by said first heated cylinder surface.
Claim 5
Dependent Claim
30 words
The method of claim 1 wherein said web is partially dewatered prior to entering said wet embossing nip to an overall fiber consistency of from about 40% to about 50%.
Claim 6
Dependent Claim
40 words
The method of claim 1 wherein said web is applied to said creping surface by placing the web in engagement with said creping surface and applying pressure thereto by said imprinting fabric with adhesive between the web and creping surface.
Claim 7
Dependent Claim
38 words
The method of claim 2 wherein said web is partially dewatered to an overall fiber consistency of from about 40% to about 50% prior to the step of directing heated fluid through said web and said imprinting fabric.
Claim 8
Dependent Claim
37 words
The method of claim 6 wherein the step of directing a heated fluid through said web and imprinting fabric increases the overall fiber consistency of the web to a consistency at least equal to about 80% solids.
Claim 9
Dependent Claim
25 words
The method of claim 2 wherein the web is sandwiched between a foraminous carrier surface and said imprinting fabric while heated fluid is directed therethrough.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-10-25 | 1986-04-26 | 1986-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-25 | 1990-04-26 | 1990-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-25 | 1994-04-26 | 1994-10-26 | $7700.00 | Window Closed / Lapsed |