Patent EP0010611A1 successfully refreshed from Google Patents.
US4781962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite cover material for absorbent articles and the like
Assignee: Kimberly Clark Worldwide Inc
•
Filing: 1986-09-09
•
Granted: 1988-11-01
•
Expires: 2006-09-09
Abstract
Abstract A composite cover material for absorbent articles and the like and a method for making the same are disclosed herein. The cover material is made of a thermoplastic film in contact with an external layer of nonwoven material. Selective point application of heat and pressure to the external surface of the nonwoven material causes the formation of a plurality of densified and partially fused areas in the nonwoven which are in vertical alignment with a corresponding plurality of concurrently formed perforations in the film. The densified and fused areas in the nonwoven act to mask the perforations in the film and in addition, restrict fluid flow when the cover material is under compression by partially blocking the performations in the film.
Inventors
- 👤 Isidro B. Zamarripa
- 👤 Juna D. M. Tomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:53
CPC Classifications
B; B32; B32B; B32B3/00; B32B3/10; A; A61; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/511; A61F13/5116; A61F13/512; A61F13/5123; A61F13/513; A61F13/51305; A61F13/51311; B32B27/00; B32B27/12; B32B5/00; B32B5/02; B32B5/022; A61F2013/51078; A61F2013/51355; B32B2307/00; B32B2307/70; B32B2307/726; B32B2307/73; B32B2555/00; B32B2555/02; Y; Y10; Y10S; Y10S428/00; Y10S428/903; Y10S428/913; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24479; Y10T428/24595; Y10T428/24603; Y10T428/24612; Y10T428/24802; Y10T428/24826
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
97 words
A composite cover material comprising: a layer of thermoplastic film material having a plurality of fluid transmitting perforations extending therethrough, and a layer of fluid pervious nonwoven web material adjacent and bonded to one side of said perforated film, said nonwoven material further having discrete areas of densified and fused material in vertical alignment with said perforations in said thermoplastic film, whereby said area of densified and fused material act as a mask with respect to said film perforations and further act to restrict fluid flow through said perforations when said film and said nonwoven are compressed.
Claim 2
Dependent Claim
97 words
A composite cover material comprising: a layer of thermoplastic film material having a plurality of fluid transmitting perforations extending therethrough, and a layer of fluid pervious nonwoven web material adjacent and bonded to one side of said perforated film, said nonwoven material further having discrete areas of densified and fused material in vertical alignment with said perforations in said thermoplastic film, whereby said area of densified and fused material act as a mask with respect to said film perforations and further act to restrict fluid flow through said perforations when said film and said nonwoven are compressed.
Claim 3
Dependent Claim
14 words
The cover material of claim 1 wherein said fluid pervious nonwoven material is hydrophobic.
Claim 4
Dependent Claim
22 words
The cover material of claim 1 wherein said nonwoven material has a higher melting point than the melting point of said film.
Claim 5
Dependent Claim
26 words
The cover material of claim 1 wherein said bonding between said film and said layer of nonwoven is primarily located about the perforations in said film.
Claim 6
Dependent Claim
55 words
The cover material of claim 1 wherein at least a portion of said areas of densified and fused nonwoven web material have individual pieces of thermoplastic film fused to a side of said areas adjacent said film to further aid in the masking and the restriction of fluid flow when said cover material is compressed.
Claim 7
Dependent Claim
151 words
A composite cover material comprising: a layer of thermoplastic film having a plurality of fluid transmitting perforations extending therethrough, and a layer of fluid pervious nonwoven web material adjacent and bonded to one side of said perforated film, said bonding between said perforated film and said layer of nonwoven being primarily located about the perforations in said film, said nonwoven material having a higher melting point than the melting point of said film, said nonwoven material having discrete areas of densified and fused material in vertical alignment with said perforations in said thermoplastic film and wherein at least a porton of said areas of densified and fused material have individual pieces of thermoplastic film fused to a side of said areas adjacent said film, whereby said areas act to mask said film perforations and further act to restrict fluid flow through said perforations when said film and nonwoven layers are compressed.
Claim 8
Dependent Claim
151 words
A composite cover material comprising: a layer of thermoplastic film having a plurality of fluid transmitting perforations extending therethrough, and a layer of fluid pervious nonwoven web material adjacent and bonded to one side of said perforated film, said bonding between said perforated film and said layer of nonwoven being primarily located about the perforations in said film, said nonwoven material having a higher melting point than the melting point of said film, said nonwoven material having discrete areas of densified and fused material in vertical alignment with said perforations in said thermoplastic film and wherein at least a porton of said areas of densified and fused material have individual pieces of thermoplastic film fused to a side of said areas adjacent said film, whereby said areas act to mask said film perforations and further act to restrict fluid flow through said perforations when said film and nonwoven layers are compressed.
Claim 9
Dependent Claim
82 words
An absorbent article comprising: a cover material having a film of thermoplastic material with a plurality of fluid transmitting perforations extending therethrough and a layer of fluid pervious nonwoven web material adjacent and bonded to one side of said perforated film, said nonwoven material having discrete areas of densified and fused material in vertical alignment with said perforations in said thermoplastic film; a backing sheet; and an absorbent pad material disposed between said film of said cover material and said backing sheet.
Claim 10
Dependent Claim
82 words
An absorbent article comprising: a cover material having a film of thermoplastic material with a plurality of fluid transmitting perforations extending therethrough and a layer of fluid pervious nonwoven web material adjacent and bonded to one side of said perforated film, said nonwoven material having discrete areas of densified and fused material in vertical alignment with said perforations in said thermoplastic film; a backing sheet; and an absorbent pad material disposed between said film of said cover material and said backing sheet.
References Cited (Backward Citations)
US3331728A
Cited
US3676242A
Cited
US4078124A
Cited
US3690977A
Cited
US4041203A
Cited
US3912567A
Cited
US3949127A
Cited
US3965906A
Cited
US3994299A
Cited
US4014341A
Cited
US3967623A
Cited
US4446187A
Cited
US4323069A
Cited
US4324247A
Cited
US4315965A
Cited
US4333979A
Cited
US4374888A
Cited
US4603069A
Cited
US4559255A
Cited
US4588630A
Cited
US4591523A
Cited
US4681793A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-01 | 1992-05-02 | 1992-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-01 | 1996-05-02 | 1996-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-01 | 2000-05-02 | 2000-11-01 | $7700.00 | Window Closed / Lapsed |