US3653382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expandable airfelt pad
Assignee: Procter and Gamble Co
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Filing: 1969-12-22
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Granted: 1972-04-04
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Expires: 1989-12-22
Abstract
Abstract A composite pad composed of a topsheet and a bottom sheet with an absorbent, folded planar airfelt pad disposed therebetween. The absorbent, folded planar airfelt pad consists of a glabrous surfaced and folded airfelt composed of less than textile length fibers such as wood pulp fibers and intended for use as an absorbent layer in disposable articles, for example disposable diapers having a topsheet, an absorbent layer, and a relatively water impermeable backsheet. The glabrous surfaced and folded airfelt provides interface slippage between substantially horizontal folds thereby avoiding tensile stresses and preventing in use rupture failure of the absorbent layer in the disposable articles, while contributing to toilet flushing disposal and absorbency.
Inventors
- 👤 Charles E Easley
- 👤 Charles L Wosaba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:07
CPC Classifications
B; B32; B32B; B32B3/00; B32B3/26; B32B3/28; A; A47; A47G; A47G9/00; A47G9/02; A47G9/0207; A47G9/0238; A47K; A47K10/00; A47K10/02; A61; A61F; A61F13/00; A61F13/01; A61F13/01021; A61F13/15; A61F13/51; A61F13/511; A61F13/51121; A61F13/53; A61F13/534; A61F13/53409; A61F13/53436; B32B27/00; B32B27/12; B32B27/32; B32B5/00; B32B5/02; B32B5/022; A61F13/537; A61F2013/00361; A61F2013/00727; A61F2013/00731; A61F2013/00744; A61F13/45; A61F13/49; A61F2013/49068; A61F2013/49076; A61F2013/53445; A61F2013/53765; A61F2013/53786; A61F13/84; A61F2013/8488; B32B2555/00; B32B2555/02; G; G05; G05B; G05B2219/00; G05B2219/30; G05B2219/50; G05B2219/50047; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24669; Y10T428/24686; Y10T428/27
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
54 words
An absorbent, folded, planar airfelt pad for use in disposable articles, which airfelt pad is comprised of airfelt with glabrous surfaces and has a multiplicity of substantially horizontal folds having a frequency of about 1 to about 4 folds per inch together with a folded to unfolded length of about 0.3 to about 0.7.
Claim 2
Dependent Claim
54 words
An absorbent, folded, planar airfelt pad for use in disposable articles, which airfelt pad is comprised of airfelt with glabrous surfaces and has a multiplicity of substantially horizontal folds having a frequency of about 1 to about 4 folds per inch together with a folded to unfolded length of about 0.3 to about 0.7.
Claim 3
Dependent Claim
89 words
An absorbent, folded, planar airfelt pad for use in disposable articles, which airfelt pad is comprised of airfelt having a basis weight of about 8 lb. to about 200 lb. per 3,000 sq. ft. with glabrous surfaces of tissue having a basis weight of about 6 lb. to about 24 lb. per 3,000 sq. ft. and has a multiplicity of substantially horizontal folds having a frequency of about 1 to about 4 folds per inch together with a folded to unfolded length ratio of about 0.3 to about 0.7.
Claim 4
Dependent Claim
89 words
An absorbent, folded, planar airfelt pad for use in disposable articles, which airfelt pad is comprised of airfelt having a basis weight of about 8 lb. to about 200 lb. per 3,000 sq. ft. with glabrous surfaces of tissue having a basis weight of about 6 lb. to about 24 lb. per 3,000 sq. ft. and has a multiplicity of substantially horizontal folds having a frequency of about 1 to about 4 folds per inch together with a folded to unfolded length ratio of about 0.3 to about 0.7.
Claim 5
Dependent Claim
50 words
The absorbent, folded, planar airfelt pad for use in disposable articles of claim 2 wherein the folds are stabilized by lines of embossing having a width of about one-sixteenth inch to About three thirty-seconds inch and the absorbent, folded airfelt pad thickness is about 0.030 inch to about 0.250 inch.
Claim 6
Dependent Claim
89 words
An absorbent, folded, planar airfelt pad for use in disposable articles, which airfelt pad is comprised of airfelt having a basis weight of about 24 lb. to about 100 lb. per 3,000 sq. ft. with glabrous surfaces of tissue having a basis weight of about 10 lb. to about 12 lb. per 3,000 sq. ft. and has a multiplicity of substantially horizontal folds having a frequency of about 2 to about 3 folds per inch together with a folded to unfolded length ratio of about 0.4 to about 0.5.
Claim 7
Dependent Claim
89 words
An absorbent, folded, planar airfelt pad for use in disposable articles, which airfelt pad is comprised of airfelt having a basis weight of about 24 lb. to about 100 lb. per 3,000 sq. ft. with glabrous surfaces of tissue having a basis weight of about 10 lb. to about 12 lb. per 3,000 sq. ft. and has a multiplicity of substantially horizontal folds having a frequency of about 2 to about 3 folds per inch together with a folded to unfolded length ratio of about 0.4 to about 0.5.
Claim 8
Dependent Claim
52 words
The absorbent, folded, planar airfelt pad for use in disposable articles of claim 4 wherein the substantially horizontal folds are stabilized by lines of embossing having a width of about one-sixteenth inch to about three thirty-seconds inch and the absorbent, folded airfelt pad thickness is about 0.070 inch to about 0.150 inch.
Claim 9
Dependent Claim
108 words
A composite pad for use as a disposable article, which composite pad is comprised of a topsheet and a bottom sheet with an absorbent, folded, planar airfelt pad disposed therebetween, which airfelt pad is comprised of airfelt having a basis weight of about 8 lb. to about 200 lb. per 3,000 sq. ft. with glabrous surfaces of tissue having a basis weight of about 6 lb. to about 24 lb. per 3,000 sq. ft. and has a multiplicity of substantially horizontal folds having a frequency of about 1 to about 4 folds per inch together with a folded to unfolded length ratio of about 0.3 to about 0.7.
Claim 10
Dependent Claim
108 words
A composite pad for use as a disposable article, which composite pad is comprised of a topsheet and a bottom sheet with an absorbent, folded, planar airfelt pad disposed therebetween, which airfelt pad is comprised of airfelt having a basis weight of about 8 lb. to about 200 lb. per 3,000 sq. ft. with glabrous surfaces of tissue having a basis weight of about 6 lb. to about 24 lb. per 3,000 sq. ft. and has a multiplicity of substantially horizontal folds having a frequency of about 1 to about 4 folds per inch together with a folded to unfolded length ratio of about 0.3 to about 0.7.
Claim 11
Dependent Claim
33 words
The composite pad for use as a disposable article of claim 6 wherein the topsheet is a non-woven sheet, the bottom sheet is a plastic film and the disposable article is a diaper.
Claim 12
Dependent Claim
41 words
The composite pad for use in a disposable article of claim 6 wherein the topsheet is a non-woven sheet, the bottom sheet is a plastic film with an outer layer of non-woven sheet and the disposable article is a sanitary napkin.
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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) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |