US4359357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making tampon with a non-woven wrap
Assignee: Dr Carl Hahn GmbH
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Filing: 1981-04-17
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Granted: 1982-11-16
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Expires: 2001-04-17
Abstract
Abstract A catamenial tampon is provided in the form of absorbent material enveloped by a liquid permeable cover which is then folded and compressed into a cylindrical shape. The enveloped absorbent material is in the form of a flat cushion and is first folded into front, central and rear sections with the front and rear sections overlying the central section. A withdrawal cord is looped around the first folded cushion which is then folded around the withdrawal cord and compressed into the final tampon shape. The resulting tampon expands when wet into a cup-shaped configuration.
Inventors
- 👤 Axel Friese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:18
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/20; A61F13/34; A61F13/2051; A61F13/2065; Y; Y10; Y10S; Y10S604/00; Y10S604/904; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1008; Y10T156/101; Y10T156/1015; Y10T156/1036; Y10T156/1051; Y10T156/1052; Y10T156/1054
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
228 words
A method of making catamenial tampons comprising: depositing absorbent material in successive longitudinal intervals upon a longitudinally extending web of liquid permeable material having longitudinally extending side edges; folding the edges of the web over said absorbent material and sealing the edges together to form a sleeve containing said absorbent material; severing and transversely sealing said folded web at said longitudinal intervals to form flat cushions of absorbent material enveloped by said web, said transverse seals constituting front and rear edges of said flat cushions and said cushions each having a top face; folding each of said cushions into longitudinally successive sections consisting of a front section defined by said front edge and a first fold line, a central section defined by said first fold line and a second fold line and a rear section defined by said second fold line and said rear edge, said front and rear sections being folded onto the top face of said central section about said front and rear fold lines, respectively, with said front and rear edges facing one another; fastening a withdrawal cord around each of said folded cushions and dividing said cushion therewith into two lateral sections; folding the two lateral sections toward each other about said withdrawal cord with the folded front and rear sections facing each other; and compressing said folded cushions into a cylindrical tampon shape.
Claim 2
Independent Claim
228 words
A method of making catamenial tampons comprising: depositing absorbent material in successive longitudinal intervals upon a longitudinally extending web of liquid permeable material having longitudinally extending side edges; folding the edges of the web over said absorbent material and sealing the edges together to form a sleeve containing said absorbent material; severing and transversely sealing said folded web at said longitudinal intervals to form flat cushions of absorbent material enveloped by said web, said transverse seals constituting front and rear edges of said flat cushions and said cushions each having a top face; folding each of said cushions into longitudinally successive sections consisting of a front section defined by said front edge and a first fold line, a central section defined by said first fold line and a second fold line and a rear section defined by said second fold line and said rear edge, said front and rear sections being folded onto the top face of said central section about said front and rear fold lines, respectively, with said front and rear edges facing one another; fastening a withdrawal cord around each of said folded cushions and dividing said cushion therewith into two lateral sections; folding the two lateral sections toward each other about said withdrawal cord with the folded front and rear sections facing each other; and compressing said folded cushions into a cylindrical tampon shape.
Claim 3
Dependent Claim
29 words
The method of claim 1 wherein the absorbent material is deposited on either side of and at a distance from a longitudinal axis of web of liquid pervious material.
Claim 4
Dependent Claim
20 words
The method of claim 1 wherein the web is weldable and said longitudinal edges of the web are heat sealed.
Claim 5
Dependent Claim
19 words
The method of claim 1 wherein the web is weldable and said front and rear edges are heat sealed.
Claim 6
Dependent Claim
23 words
The method of claim 1 wherein a reinforcing strip is applied to the liquid pervious web in the area underlying the withdrawal cord.
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) | 1985-11-15 | 1986-05-17 | 1986-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-15 | 1990-05-17 | 1990-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-15 | 1994-05-17 | 1994-11-16 | $7700.00 | Window Closed / Lapsed |