Patent US4420372A successfully refreshed from Google Patents.
US4420372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High bulk papermaking system
Assignee: Fort James Corp
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Filing: 1982-07-12
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Granted: 1983-12-13
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Expires: 2002-07-12
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
2026-11-05 20:14
CPC Classifications
D; D21; D21F; D21F11/00; D21F11/006
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
195 words
Apparatus for manufacturing a bulky, soft and absorbent paper web comprising: first rotatable dryer means having a smooth heated surface; web delivery means defining a nip with said first dryer means and cooperable therewith to compact said web substantially overall and apply said web to said first dryer means surface; web doctoring means for doctoring said web from said first dryer means surface; a press means for receiving said web from said first drying means surface, said press means defined by a dewatering felt loop and an open mesh imprinting fabric loop formed of woven filaments having spaced compaction elements and defining voids between the filaments said compaction elements constitute at least about 5% of the total web supporting surface of said imprinting fabric; and second rotatable dryer means having a smooth heated creping surface and web doctoring means for doctoring said web from said second dryer means surface, said imprinting fabric extending between said press and said creping surface of said second dryer means and defining a nip with the creping surface whereby said web is delivered from said press to said creping surface in essentially undisturbed condition and applied to said creping surface.
Claim 2
Dependent Claim
195 words
Apparatus for manufacturing a bulky, soft and absorbent paper web comprising: first rotatable dryer means having a smooth heated surface; web delivery means defining a nip with said first dryer means and cooperable therewith to compact said web substantially overall and apply said web to said first dryer means surface; web doctoring means for doctoring said web from said first dryer means surface; a press means for receiving said web from said first drying means surface, said press means defined by a dewatering felt loop and an open mesh imprinting fabric loop formed of woven filaments having spaced compaction elements and defining voids between the filaments said compaction elements constitute at least about 5% of the total web supporting surface of said imprinting fabric; and second rotatable dryer means having a smooth heated creping surface and web doctoring means for doctoring said web from said second dryer means surface, said imprinting fabric extending between said press and said creping surface of said second dryer means and defining a nip with the creping surface whereby said web is delivered from said press to said creping surface in essentially undisturbed condition and applied to said creping surface.
Claim 3
Dependent Claim
45 words
The apparatus of claim 1 additionally comprising a through dryer disposed between said first rotatable dryer means and said second rotatable dryer means, said imprinting fabric placing said web into operative engagement with said through dryer as it is transported between said rotatable dryer means.
Claim 4
Dependent Claim
44 words
The apparatus of claim 2 wherein said through dryer comprises a rotatable dryer drum having a foraminous outer surface, said imprinting fabric extending partially about the periphery of said dryer drum to sandwich said web between said foraminous outer surface and said imprinting fabric.
Claim 5
Dependent Claim
31 words
The apparatus of claim 1 additionally comprising means cooperable with said first dryer means to compact said web overall at a plurality of locations on said first dryer means heated surface.
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) | 1986-12-12 | 1987-06-13 | 1987-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-12 | 1991-06-13 | 1991-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-12 | 1995-06-13 | 1995-12-13 | $7700.00 | Window Closed / Lapsed |