US4063995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous webs with improved bonder and creping adhesive
Assignee: Kimberly Clark Tissue Co
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Filing: 1976-10-26
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Granted: 1977-12-20
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Expires: 1996-10-26
Abstract
Abstract Creping of fibrous webs to enhance their softness and bulk is improved and the resulting creped web is made strong, water dispersible and non-blocking by employing a bonder and creping adhesive composition containing four components which are blended to produce a mixture having a percent solids of from 10% to 40% and an initial modulus for a film of the solids of less than 1.75 × 10 8 dynes/cm 2 . The composition (mixture) functions as a bonder for the fibers to impart strength and as a creping adhesive for the web so that creping enhances softness and bulkiness. Also disclosed are methods of creping employing such a bonder and creping adhesive composition and sheet materials creped with such compositions.
Inventors
- 👤 Stephen Richard Grossman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:34
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/36; D21H17/21; D21H17/24; D21H17/25; D21H17/27; D21H17/37; D21H21/00; D21H21/14; D21H21/146; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24446; Y10T428/24455; Y10T428/24802; Y10T428/24934
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
216 words
In the process of imparting strength, softness and bulkiness to water dispersible fibrous webs by applying a bonder and adhesive composition to the formed web and creping the web, the improvement which comprises employing as the bonder and adhesive composition a water based composition having a solids content of from about 10% to about 40% and an initial modulus for a film of the solids of less than 1.75 × 10 8 dynes/cm 2 , said solids content and modulus being obtained by admixing the following components: 1. from 8% to 40% of a water emulsion of a softening compound suitable for use as a fiber bonder whose solid film has an initial modulus of less than 2 × 10 7 dynes/cm 2 ; 2. from 25% to 60% of a water dispersibility imparting emulsion whose solid film has an initial modulus of from 3 × 10 7 to 1 × 10 8 dynes/cm 2 ; 3. from 10% to 37% of a blocking supressant having a glass transition temperature of from about 0° C to about +50° C; and 4. from 5% to 12% of a water soluble polymer suitable for use as a fiber bonder and having a viscosity of at least 100 centipoise for an 8% by weight water solution of the polymer.
Claim 2
Dependent Claim
216 words
In the process of imparting strength, softness and bulkiness to water dispersible fibrous webs by applying a bonder and adhesive composition to the formed web and creping the web, the improvement which comprises employing as the bonder and adhesive composition a water based composition having a solids content of from about 10% to about 40% and an initial modulus for a film of the solids of less than 1.75 × 10 8 dynes/cm 2 , said solids content and modulus being obtained by admixing the following components: 1. from 8% to 40% of a water emulsion of a softening compound suitable for use as a fiber bonder whose solid film has an initial modulus of less than 2 × 10 7 dynes/cm 2 ; 2. from 25% to 60% of a water dispersibility imparting emulsion whose solid film has an initial modulus of from 3 × 10 7 to 1 × 10 8 dynes/cm 2 ; 3. from 10% to 37% of a blocking supressant having a glass transition temperature of from about 0° C to about +50° C; and 4. from 5% to 12% of a water soluble polymer suitable for use as a fiber bonder and having a viscosity of at least 100 centipoise for an 8% by weight water solution of the polymer.
Claim 3
Dependent Claim
49 words
The method of claim 1 in which the amount of the bonder and creping adhesive composition applied to the fibrous web is from 1% to 5% by weight based upon the weight of binder solids in the adhesive mixture and based upon the bone dry weight of the web.
Claim 4
Dependent Claim
25 words
The method of claim 2 in which the bonder and adhesive composition is printed onto the fibrous web in a continuous pattern and then creped.
Claim 5
Dependent Claim
51 words
The method of claim 2 in which component (1) is a copolymer of acrylic esters; component (2) is a hydrocolloidally dispersed copolymer of vinyl acetate and acrylic esters; component (3) is a non-ionic emulsion of a cross-linking polyvinyl acetate copolymer; and component (4) is a sodium salt of carboxy methyl cellulose.
Claim 6
Dependent Claim
36 words
The method of claim 2 in which the fibrous web is a wet-laid, non-wet pressed, transpiration dried sheet and the bonder and adhesive composition is printed onto the sheet in a continuous pattern and then creped.
Claim 7
Dependent Claim
19 words
The method of claim 2 in which the bonder and adhesive composition is applied directly to the creping surface.
Claim 8
Dependent Claim
17 words
The soft, strong, bulky water-dispersible and non-blocking fibrous web produced according to the method of claim 1.
Claim 9
Dependent Claim
17 words
The soft, strong, bulky water-dispersible and non-blocking fibrous web produced according to the method of claim 3.
Claim 10
Dependent Claim
17 words
The soft, strong, bulky water-dispersible and non-blocking fibrous web produced according to the method of claim 4.
Claim 11
Dependent Claim
16 words
The soft, strong, bulky water-dispersible non-blocking fibrous web produced according to the method of claim 5.
Claim 12
Dependent Claim
210 words
In the process of imparting strength, softness and bulkiness to water dispersible fibrous webs by applying a bonder and adhesive composition to the formed web and creping the web, the improvement which comprises employing as the bonder and adhesive composition a water based composition having a solids content of from about 10% to about 40% and an initial modulus for a film of the solids of less than 1.75 × 10 8 dynes/cm 2 , said solids content and modulus being obtained by admixing the following components: 1. from 8% to 40% of a water emulsion of a softening compound suitable for use as a fiber bonder whose solid film has an initial modulus of less than 2 × 10 7 dynes/cm 2 ; 2. from 25% to 65% of a water dispersibility imparting emulsion whose solid film has an initial modulus of from 3 × 10 7 to 1 × 10 8 dynes/cm 2 ; 3. from 10% to 37% of a normally solid, non-ionic, water soluble, oxygen containing, organic blocking suppressant; and 4. from 5% to 12% of a water soluble polymer suitable for use as a fiber bonder and having a viscosity of at least 100 centipoise for an 8% by weight water solution of the polymer.
Claim 13
Dependent Claim
210 words
In the process of imparting strength, softness and bulkiness to water dispersible fibrous webs by applying a bonder and adhesive composition to the formed web and creping the web, the improvement which comprises employing as the bonder and adhesive composition a water based composition having a solids content of from about 10% to about 40% and an initial modulus for a film of the solids of less than 1.75 × 10 8 dynes/cm 2 , said solids content and modulus being obtained by admixing the following components: 1. from 8% to 40% of a water emulsion of a softening compound suitable for use as a fiber bonder whose solid film has an initial modulus of less than 2 × 10 7 dynes/cm 2 ; 2. from 25% to 65% of a water dispersibility imparting emulsion whose solid film has an initial modulus of from 3 × 10 7 to 1 × 10 8 dynes/cm 2 ; 3. from 10% to 37% of a normally solid, non-ionic, water soluble, oxygen containing, organic blocking suppressant; and 4. from 5% to 12% of a water soluble polymer suitable for use as a fiber bonder and having a viscosity of at least 100 centipoise for an 8% by weight water solution of the polymer.
Claim 14
Dependent Claim
54 words
The method of claim 11 in which the amount of the bonder and creping adhesive composition applied to the fibrous web is from 1% to 5% by weight based upon the weight of adhesive solids and based upon the bone dry weight of the web and the fibrous web is a chemically debonded web.
Claim 15
Dependent Claim
25 words
The method of claim 12 in which the bonder and adhesive composition is printed onto the fibrous web in a continuous pattern and then creped.
Claim 16
Dependent Claim
44 words
The method of claim 12 in which component (1) is a copolymer of acrylic esters; component (2) is a hydrocolloidally dispersed copolymer of vinyl acetate and acrylic esters; component (3) is a sugar; and component (4) is a sodium salt of carboxy methyl cellulose.
Claim 17
Dependent Claim
36 words
The method of claim 11 in which the fibrous web is a wet-laid, non-wet pressed, transpiration dried sheet and the bonder and adhesive composition is printed onto the sheet in a continuous pattern and then creped.
Claim 18
Dependent Claim
19 words
The method of claim 11 in which the bonder and adhesive composition is applied directly to the creping surface.
Claim 19
Dependent Claim
17 words
The soft, strong, bulky water-dispersible and non-blocking fibrous web produced according to the method of claim 11.
Claim 20
Dependent Claim
17 words
The soft, strong, bulky water-dispersible and non-blocking fibrous web produced according to the method of claim 13.
Claim 21
Dependent Claim
17 words
The soft, strong, bulky water-dispersible and non-blocking fibrous web produced according to the method of claim 14.
Claim 22
Dependent Claim
16 words
The soft, strong, bulky water-dispersible non-blocking fibrous web produced according to the method of claim 15.
Claim 23
Dependent Claim
182 words
A water based bonder and creping adhesive comprising a composition having a solids content of from about 10% to about 40% and an initial modulus for a film of the solids of less than 1.75 × 10 8 dynes/cm 2 , said solids content and modulus being obtained by admixing the following components: 1. from 8% to 40% of a water emulsion of a softening compound suitable for use as a fiber bonder whose solid film has an initial modulus of less than 2 × 10 7 dynes/cm 2 ; (2) from 25% to 60% of a water dispersibility imparting emulsion whose solids film has an initial modulus of from 3 × 10 7 to 1 × 10 8 dynes/cm 2 ; 3. from 10% to 37% of a blocking suppressant having a glass transition temperature of from about 0° C to about +50° C; and 4. from 5% to 12% of a water soluble polymer suitable for use as a fiber bonder and having a viscosity of at least 100 centipoise for an 8% by weight water solution of the polymer.
Claim 24
Dependent Claim
182 words
A water based bonder and creping adhesive comprising a composition having a solids content of from about 10% to about 40% and an initial modulus for a film of the solids of less than 1.75 × 10 8 dynes/cm 2 , said solids content and modulus being obtained by admixing the following components: 1. from 8% to 40% of a water emulsion of a softening compound suitable for use as a fiber bonder whose solid film has an initial modulus of less than 2 × 10 7 dynes/cm 2 ; (2) from 25% to 60% of a water dispersibility imparting emulsion whose solids film has an initial modulus of from 3 × 10 7 to 1 × 10 8 dynes/cm 2 ; 3. from 10% to 37% of a blocking suppressant having a glass transition temperature of from about 0° C to about +50° C; and 4. from 5% to 12% of a water soluble polymer suitable for use as a fiber bonder and having a viscosity of at least 100 centipoise for an 8% by weight water solution of the polymer.
Claim 25
Dependent Claim
140 words
A water based bonder and creping adhesive comprising a composition having a solids content of from about 10% to about 40% of an initial modulus for a film of the solids of less than 1.75 × 10 8 dynes/cm 2 , said solids content and modulus being obtained by admixing the following components: 1. from 8% to 15% of a water emulsion of a softening compound suitable for use as a fiber bonder whose solids film has an initial modulus of less than 2 × 10 7 dynes/cm 2 ; 2. from 25% to 65% of a water dispersibility imparting emulsion whose solids film has an initial modulus of from 3 × 10 7 to 1 × 10 8 dynes/cm 2 ; 3. from 10% to 37% of a normally solid, non-ionic, water soluble, oxygen containing organic blocking suppressant; and
Claim 26
Dependent Claim
140 words
A water based bonder and creping adhesive comprising a composition having a solids content of from about 10% to about 40% of an initial modulus for a film of the solids of less than 1.75 × 10 8 dynes/cm 2 , said solids content and modulus being obtained by admixing the following components: 1. from 8% to 15% of a water emulsion of a softening compound suitable for use as a fiber bonder whose solids film has an initial modulus of less than 2 × 10 7 dynes/cm 2 ; 2. from 25% to 65% of a water dispersibility imparting emulsion whose solids film has an initial modulus of from 3 × 10 7 to 1 × 10 8 dynes/cm 2 ; 3. from 10% to 37% of a normally solid, non-ionic, water soluble, oxygen containing organic blocking suppressant; and
Claim 27
Dependent Claim
35 words
from 5% to 12% of a water soluble polymer suitable for use as a fiber bonder and having a viscosity of at least 100 centipoise for an 8% by weight water solution of the polymer.
Claim 28
Dependent Claim
35 words
from 5% to 12% of a water soluble polymer suitable for use as a fiber bonder and having a viscosity of at least 100 centipoise for an 8% by weight water solution of the polymer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |