Patent US4543141A successfully refreshed from Google Patents.
US4543141A
Expired / Lapsed
US
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Method of making elastic diapers, apparatus therefor, and product
Assignee: Paper Converting Machine Co
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Filing: 1983-12-27
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Granted: 1985-09-24
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Expires: 2003-12-27
Abstract
Abstract A method for producing elastic disposable diapers, apparatus therefor and product therefrom which includes applying a continuous stripe of adhesive to stretched elastic ribbon, V-folding longitudinally spaced portions of the ribbon to immobilize the adhesive in the spaced portion, applying the intermediate flat portions of the stretched ribbon with exposed adhesive to a substrate, to form discrete diapers which have contractable portions therein.
Inventors
- 👤 John J. Bradley
- 👤 Debra K. Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:06
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/15577; A61F13/15585; A61F13/15593; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1008; Y10T156/101
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
70 words
A method of securing longitudinally spaced portions of a stretched, flat faced elastic ribbon to a continuously moving web, the steps of: applying a continuous stripe of adhesive to one face of said ribbon, V-folding longitudinally spaced portions of said ribbon to bring the parts of said one face into confronting relation and to provide a series of longitudinally spaced non-folded portions, and securing said non-folded portions to said web.
Claim 2
Independent Claim
70 words
A method of securing longitudinally spaced portions of a stretched, flat faced elastic ribbon to a continuously moving web, the steps of: applying a continuous stripe of adhesive to one face of said ribbon, V-folding longitudinally spaced portions of said ribbon to bring the parts of said one face into confronting relation and to provide a series of longitudinally spaced non-folded portions, and securing said non-folded portions to said web.
Claim 3
Dependent Claim
16 words
The method of claim 1 in which said ribbon is transversely severed between adjacent non-folded portions.
Claim 4
Dependent Claim
15 words
The method of claim 2 in which said ribbon and web are simultaneously transversely severed.
Claim 5
Dependent Claim
20 words
The method of claim 2 in which said ribbon is transversely severed prior to securing said ribbon to said web.
Claim 6
Dependent Claim
18 words
The method of claim 2 wherein said severing occurs substantially midway of the length of each folded portion.
Claim 7
Dependent Claim
60 words
The method of claim 1 in which said V-folding step includes moving said ribbon through the slot of a slot-equipped member, said slot having a width slightly greater than twice the thickness of said stretched ribbon and a depth sufficient to develop V-folding of said stretched ribbon and where there is relative movement between said slot and said stretched ribbon.
Claim 8
Dependent Claim
21 words
The method of claim 6 in which said slot is moved at a speed approximately 25-50% greater than said stretched ribbon.
Claim 9
Independent Claim
88 words
A method of securing longitudinally spaced portions of a stretched, flat faced elastic ribbon to a continuously moving web, the steps of: applying a continuous strip of adhesive to one face of said ribbon, V-folding longitudinally spaced portions of said ribbon to bring the parts of said one face into confronting relation and to provide a series of longitudinally spaced non-folded portions, securing said non-folded portions to said web, and transversely severing said web and ribbon between adjacent non-folded portions whereby said non-folded portions selectively contract the web.
Claim 10
Independent Claim
88 words
A method of securing longitudinally spaced portions of a stretched, flat faced elastic ribbon to a continuously moving web, the steps of: applying a continuous strip of adhesive to one face of said ribbon, V-folding longitudinally spaced portions of said ribbon to bring the parts of said one face into confronting relation and to provide a series of longitudinally spaced non-folded portions, securing said non-folded portions to said web, and transversely severing said web and ribbon between adjacent non-folded portions whereby said non-folded portions selectively contract the web.
Claim 11
Independent Claim
160 words
A method of manufacturing an elastic leg band disposable diaper comprising: advancing a moisture impervious web toward a ribbon uniting station, advancing a pair of stretched, flat faced elastic ribbons toward said station and prior to reaching said station, applying a continuous stripe of adhesive to one face of each of said ribbons, V-folding longitudinally spaced portions of each of said ribbons in synchronization to bring the parts of said one face into confronting relation and to provide a series of longitudinally spaced non-folded portions of said ribbon, securing in synchronism at said station said non-folded portions to said web, intermittently supplying absorbent batts to said web and thereafter applying a moisture pervious web to said batts and web and securing both of said webs together along longitudinal, marginal lines, and transversely severing said webs and ribbons between adjacent non-folded portions of said ribbons whereby said non-folded portions selectively contract the crotch-providing area of a diaper developed from said webs.
Claim 12
Independent Claim
160 words
A method of manufacturing an elastic leg band disposable diaper comprising: advancing a moisture impervious web toward a ribbon uniting station, advancing a pair of stretched, flat faced elastic ribbons toward said station and prior to reaching said station, applying a continuous stripe of adhesive to one face of each of said ribbons, V-folding longitudinally spaced portions of each of said ribbons in synchronization to bring the parts of said one face into confronting relation and to provide a series of longitudinally spaced non-folded portions of said ribbon, securing in synchronism at said station said non-folded portions to said web, intermittently supplying absorbent batts to said web and thereafter applying a moisture pervious web to said batts and web and securing both of said webs together along longitudinal, marginal lines, and transversely severing said webs and ribbons between adjacent non-folded portions of said ribbons whereby said non-folded portions selectively contract the crotch-providing area of a diaper developed from said webs.
Claim 13
Dependent Claim
14 words
The method of claim 9 in which said ribbon is about 1/4" in width.
Claim 14
Dependent Claim
17 words
The method of claim 9 in which said adhesive is of a high viscosity, high tack characteristic.
Claim 15
Independent Claim
164 words
A method of manufacturing an elastic leg band disposable diaper comprising: advancing a moisture impervious web toward a uniting station and intermittently securing absorbent batts to said web, advancing a pair of stretched, flat faced elastic ribbons toward a ribbon uniting station and prior to the reaching said ribbon uniting station, applying a continuous stripe of adhesive to one face of each of said ribbons, V-folding longitudinally spaced portions of each of said ribbons in synchronization to bring the parts of said one face into confronting relation and to provide a series of longitudinally spaced non-folded portions in said ribbon, securing in synchronism at said station and said non-folded portions to said web, applying a moisture pervious web to said batts and web and securing both of said webs together along longitudinal, marginal lines, and transversely severing said webs and ribbons between adjacent non-folded portions of said ribbons whereby said non-folded portions selectively contract the crotch-providing area of a diaper developed from said webs.
Claim 16
Independent Claim
164 words
A method of manufacturing an elastic leg band disposable diaper comprising: advancing a moisture impervious web toward a uniting station and intermittently securing absorbent batts to said web, advancing a pair of stretched, flat faced elastic ribbons toward a ribbon uniting station and prior to the reaching said ribbon uniting station, applying a continuous stripe of adhesive to one face of each of said ribbons, V-folding longitudinally spaced portions of each of said ribbons in synchronization to bring the parts of said one face into confronting relation and to provide a series of longitudinally spaced non-folded portions in said ribbon, securing in synchronism at said station and said non-folded portions to said web, applying a moisture pervious web to said batts and web and securing both of said webs together along longitudinal, marginal lines, and transversely severing said webs and ribbons between adjacent non-folded portions of said ribbons whereby said non-folded portions selectively contract the crotch-providing area of a diaper developed from said webs.
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) | 1988-09-23 | 1989-03-25 | 1989-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-23 | 1993-03-25 | 1993-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-23 | 1997-03-25 | 1997-09-24 | $7700.00 | Window Closed / Lapsed |