US4894118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recreped absorbent products and method of manufacture
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1986-08-06
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Granted: 1990-01-16
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Expires: 2006-08-06
Abstract
Abstract There has been provided a recreped absorbent product manufactured by forming a web from an aqueous stock, drying the web to a selected consistency and creping one side thereof. The creped web is then conveyed at a selected rate for drying and recreping on the same side. The web moisture consistency, draw speeds, crepe angle and nip pressures as well as crepe adhesive qualities are controlled parameters.
Inventors
- 👤 Steven L. Edwards
- 👤 William D. Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:40
CPC Classifications
D; D21; D21F; D21F11/00; D21F11/14; D21F11/145
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
209 words
A method of making a tissue product comprising: (a) forming a non-layered wet web of cellulosic fibers having a selected basis weight from an aqueous stock slurry comprising secondary fibers; (b) partially dewatering said web to remove a portion of the water therein, such that interfiber adhesion is enhanced within said web; (c) conveying said web to a first drying cylinder and affixing said web to said cylinder such that further interfiber adhesion is effected upon further dewatering to a fiber consistency of at least 90%; (d) creping said web from the first drying cylinder with a doctor blade, such that said interfiber adhesion is disrupted; (e) conveying said web to a second drying cylinder and affixing said web thereto at the location of a nip formed between the second cylinder and an imprinting fabric having a pattern of raised knuckle areas thereon; (f) differentially compressing the web to the second cylinder with said imprinting fabric, said compression resulting in adhesion of said web to said cylinder being greatest in discrete points corresponding to the knuckles of said imprinting fabric; (g) differentially creping the same side of said web from the second cylinder; and (h) converting said web into a one-ply or two-ply facial tissue or bath tissue product.
Claim 2
Independent Claim
209 words
A method of making a tissue product comprising: (a) forming a non-layered wet web of cellulosic fibers having a selected basis weight from an aqueous stock slurry comprising secondary fibers; (b) partially dewatering said web to remove a portion of the water therein, such that interfiber adhesion is enhanced within said web; (c) conveying said web to a first drying cylinder and affixing said web to said cylinder such that further interfiber adhesion is effected upon further dewatering to a fiber consistency of at least 90%; (d) creping said web from the first drying cylinder with a doctor blade, such that said interfiber adhesion is disrupted; (e) conveying said web to a second drying cylinder and affixing said web thereto at the location of a nip formed between the second cylinder and an imprinting fabric having a pattern of raised knuckle areas thereon; (f) differentially compressing the web to the second cylinder with said imprinting fabric, said compression resulting in adhesion of said web to said cylinder being greatest in discrete points corresponding to the knuckles of said imprinting fabric; (g) differentially creping the same side of said web from the second cylinder; and (h) converting said web into a one-ply or two-ply facial tissue or bath tissue product.
Claim 3
Dependent Claim
29 words
The method as recited in claim 1 further comprising adhering the web to the first cylinder at a pressure nip, said pressure nip being formed by a pressure roll.
Claim 4
Dependent Claim
20 words
The method as recited in claim 2 further comprising providing the pressure nip with a pressure of about 300-500 pli.
Claim 5
Dependent Claim
20 words
The method as recited in claim 2 further comprising providing the pressure nip with a pressure of about 100-300 pli.
Claim 6
Dependent Claim
30 words
The method as recited in claim 1, further comprising imprinting said web with an imprinting fabric having a mesh size of from 20 meshes/in 2 to 200 meshes/in 2 .
Claim 7
Dependent Claim
30 words
The method as recited in claim 1, further comprising imprinting said web with an imprinting fabric having a mesh size of from 50 meshes/in 2 to 100 meshes/in 2 .
Claim 8
Dependent Claim
42 words
The method as recited in claim 1, further comprising adhering the web to the second cylinder at a second pressure nip, said pressure nip being formed by an imprinting fabric wrapped around a pressure roll and a portion of the second cylinder.
Claim 9
Dependent Claim
24 words
The method as recited in claim 7, further comprising providing said second pressure nip with a pressure from about 50 pli to 300 pli.
Claim 10
Dependent Claim
20 words
The method as recited in claim 8, further comprising providing said pressure nip with a pressure of about 100-200 pli.
Claim 11
Dependent Claim
25 words
The method as recited in claim 1, further comprising partially wrapping said impression fabric around said second cylinder without the use of a pressure roll.
Claim 12
Dependent Claim
29 words
The method as recited in claim 1, further comprising creping said web from the second cylinder when said web has been dried to a consistency of at least 90%.
Claim 13
Dependent Claim
38 words
The method as recited in claim 1, further comprising adhering said web to the second cylinder by applying adhesive to at least one of said cylinder and web prior to adhesion of said web to the second cylinder.
Claim 14
Dependent Claim
14 words
The method as recited in claim 12, further comprising applying said adhesive by spraying.
Claim 15
Dependent Claim
18 words
The method as recited in claim 12, further comprising applying said adhesive by use of a rotogravure roll.
Claim 16
Dependent Claim
20 words
The method as recited in claim 12 wherein the adhesive is at least one of polyvinyl acetate and polyvinyl alcohol.
Claim 17
Dependent Claim
17 words
The method as recited in claim 15 wherein said adhesive is less than 1% active adhesive agent.
Claim 18
Dependent Claim
18 words
The method as recited in claim 16 wherein said adhesive is between 0.2 and 0.6% active adhesive agent.
Claim 19
Dependent Claim
16 words
The method as recited in claim 15 wherein the adhesive is at a concentration of 0.2-1%.
Claim 20
Dependent Claim
16 words
The method as recited in claim 15 wherein the adhesive is at a concentration of 0.4-5%.
Claim 21
Dependent Claim
30 words
The method as recited in claim 1, further comprising providing said first drying cylinder as a steam heated Yankee dryer, said web being thermally dried by adhesion to said dryer.
Claim 22
Dependent Claim
13 words
A tissue product comprising at least one non-layered recreped ply containing secondary fiber.
Claim 23
Dependent Claim
13 words
A tissue product comprising at least one non-layered recreped ply containing secondary fiber.
Claim 24
Dependent Claim
26 words
The tissue product of claim 21 wherein the amount of secondary fiber is from about 40 to about 60 weight percent of the total fiber content.
Claim 25
Dependent Claim
25 words
The tissue product of claim 21 wherein the amount of secondary fiber is from about 25 to 100 weight percent of the total fiber content.
Claim 26
Dependent Claim
11 words
The tissue product of claim 21 consisting of a single ply.
Claim 27
Dependent Claim
17 words
The tissue product of claim 21 consisting of two plies, wherein both plies are non-layered recreped plies.
References Cited (Backward Citations)
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US4302282A
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Cited
FR2501742A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-15 | 1993-07-17 | 1994-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-15 | 1997-07-17 | 1998-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-15 | 2001-07-17 | 2002-01-16 | $7700.00 | Window Closed / Lapsed |