US5091032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-nip high-speed paper converting
Assignee: Georgia Pacific Consumer Products LP
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Filing: 1989-07-10
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Granted: 1992-02-25
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Expires: 2009-07-10
Abstract
Abstract A converted product which is particularly high both in bulk and in perceived softness is produced by pre-embossing the plies individually, joining the plies and calendering and again embossing. In another example, the pre-emboss step is omitted.
Inventors
- 👤 Galyn A. Schulz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:34
CPC Classifications
B; B32; B32B; B32B38/00; B32B38/06; B31; B31F; B31F1/00; B31F1/07; B32B38/0012; B31F2201/00; B31F2201/07; B31F2201/0707; B31F2201/0715; B31F2201/0723; B31F2201/0728; B31F2201/0756; B31F2201/0758; B31F2201/0761; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1023; Y10T156/1039; Y10T156/1041; Y10T156/17; Y10T156/1702; Y10T156/1712; Y10T156/1737
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
52 words
A method comprising: separately pre-embossing each of at least two webs to form respective pre-embossed webs; thereafter joining the pre-embossed webs to form a pre-embossed multi-ply web and calendering the pre-embossed multi-ply web to form a calendered multi-ply web; and thereafter embossing the calendered multi-ply web to form an embossed multi-ply web.
Claim 2
Independent Claim
52 words
A method comprising: separately pre-embossing each of at least two webs to form respective pre-embossed webs; thereafter joining the pre-embossed webs to form a pre-embossed multi-ply web and calendering the pre-embossed multi-ply web to form a calendered multi-ply web; and thereafter embossing the calendered multi-ply web to form an embossed multi-ply web.
Claim 3
Dependent Claim
24 words
A method as in claim 13 in which the pre-embossing produces an embossing pattern which is significantly finer than that produced by said embossing.
Claim 4
Independent Claim
69 words
A method comprising: providing a pre-embossed multi-ply web which is calendered at a first nip which is between a first resilient roll and a second roll to form a calendered multi-ply web; passing the calendered multi-ply web through a second nip which is between the first resilient roll and an embossing roll and then through a third nip which is between said embossing roll and a second resilient roll.
Claim 5
Independent Claim
69 words
A method comprising: providing a pre-embossed multi-ply web which is calendered at a first nip which is between a first resilient roll and a second roll to form a calendered multi-ply web; passing the calendered multi-ply web through a second nip which is between the first resilient roll and an embossing roll and then through a third nip which is between said embossing roll and a second resilient roll.
Claim 6
Dependent Claim
36 words
A method as in claim 15 in which the step of providing a pre-embossed multi-ply web comprises separately providing at least two pre-embossed webs and joining the separately provided webs into a single pre-embossed multi-ply web.
Claim 7
Dependent Claim
13 words
A method as in claim 16 in which said second roll is resilient.
Claim 8
Dependent Claim
13 words
A method as in claim 16 in which said second roll is rigid.
Claim 9
Independent Claim
89 words
A method of converting a paper product to produce a converted product in the form of a tissue or towel product having both high bulk and softness comprising: separately pre-embossing each of at least two webs to reduce web strength and increase bulk; joining the pre-embossed webs to form a pre-embossed multi-ply web and calendering the pre-embossed multi-ply web to reduce protuberances formed in the pre-embossing step at the outside surfaces of the pre-embossed multi-ply web; and embossing the calendered multi-ply web to further increase bulk and decrease strength.
Claim 10
Independent Claim
89 words
A method of converting a paper product to produce a converted product in the form of a tissue or towel product having both high bulk and softness comprising: separately pre-embossing each of at least two webs to reduce web strength and increase bulk; joining the pre-embossed webs to form a pre-embossed multi-ply web and calendering the pre-embossed multi-ply web to reduce protuberances formed in the pre-embossing step at the outside surfaces of the pre-embossed multi-ply web; and embossing the calendered multi-ply web to further increase bulk and decrease strength.
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) | 1995-02-24 | 1995-08-26 | 1996-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-24 | 1999-08-26 | 2000-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-24 | 2003-08-26 | 2004-02-25 | $7700.00 | Window Closed / Lapsed |