US3716430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tampon and process and apparatus for making the same
Assignee: Mo och Domsjo AB
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Filing: 1969-10-15
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Granted: 1973-02-13
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Expires: 1989-10-15
Abstract
Abstract A composite tampon is provided comprising an absorbent layer of cellulose pulp fibers, preferably cellulose fluff fibers, enclosed within a wrapper layer which can be a non-woven material, or a laminate between nonwoven material and cellulose pulp tissue. Apparatus is also provided for preparing such tampons in a continuous manner from cellulose fluff fibers and the wrapper materials, folding or rolling the absorbent layer within the wrapper in the form of a continuous elongated tampon, and then cutting the column into lengths to form the tampon.
Inventors
- 👤 I Croon
- 👤 N Blomqvist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:36
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/20; A61F13/2082; A61F13/2085; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1008; Y10T156/1013; Y10T156/1052; Y10T156/1084
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
119 words
A continuous process for preparing tampons which comprises continuously and stepwise, in sequence, forming an extended layer of loose cellulose pulp fibers having a length of up to 5 mm. on a porous base; laying a sheet of wrapper material on the layer; folding the layer and wrapper tightly lengthwise to form a column, with the lapped ends of the wrapper sheet outermost, forming a lapped seam, with the cellulose pulp fibers under compression within the wrapper; bonding the lapped edges together to seal the seam; and cutting the resulting column into lengths to form tampons, each of the aforesaid steps being carried out simultaneously with respect to each other, and stepwise with respect to the tampons being prepared.
Claim 2
Dependent Claim
119 words
A continuous process for preparing tampons which comprises continuously and stepwise, in sequence, forming an extended layer of loose cellulose pulp fibers having a length of up to 5 mm. on a porous base; laying a sheet of wrapper material on the layer; folding the layer and wrapper tightly lengthwise to form a column, with the lapped ends of the wrapper sheet outermost, forming a lapped seam, with the cellulose pulp fibers under compression within the wrapper; bonding the lapped edges together to seal the seam; and cutting the resulting column into lengths to form tampons, each of the aforesaid steps being carried out simultaneously with respect to each other, and stepwise with respect to the tampons being prepared.
Claim 3
Dependent Claim
23 words
A process in accordance with claim 1, which comprises applying a bonding agent to the lapped seam, to bond the lapped edges together.
Claim 4
Dependent Claim
16 words
A process in accordance with claim 1, in which the cellulose fibers are cellulose fluff fibers.
Claim 5
Dependent Claim
17 words
A process in accordance with claim 1, in which the wrapper is of high wet-strength fibrous material.
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) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |