Garment shield

• US 5,807,365 A
• Filed: 05/07/1997
• Issued: 09/15/1998
• Est. Priority Date: 10/14/1992
• Status: Expired due to Term

• Current Assignee: McNeil-PPC Incorporated (Johnson & Johnson)
• Original Assignee: McNeil-PPC Incorporated (Johnson & Johnson)
• Inventors: Luceri, Thomas
• Primary Examiner(s): Yu, Mickey
• Assistant Examiner(s): CUDDIHY, FRANCIS KEVIN
• Application Number:
  US08/852,306
• Time in Patent Office: 496 Days
• Field of Search: 604/358, 604/365, 604/366, 604/367, 604/370, 604/372, 604/385.1, 604/375, 604/378-380, 604/393, 604/386, 604/387, 604/383, 604/389, 604/390, 156/66, 156/230, 156/234, 156/238, 156/240, 156/540, 602/54-58, 602/903
• US Class Current: 604/367
• CPC Class Codes: A61F 13/4756 the means consisting of grooves, e.g. channels, depressions or embossments, resulting in a heterogeneous surface level
• CPC Class Codes: A61F 13/4758 the means preventing fluid flow in a longitudinal direction
• CPC Class Codes: A61F 13/51121 characterised by the material
• CPC Class Codes: A61F 13/533 having discontinuous areas of compression
• CPC Class Codes: A61F 13/536 having discontinuous areas of compression
• CPC Class Codes: A61F 13/58 Adhesive tab fastener elements A61F13/5611, A61F13/5616, A61F13/66 take precedence
• CPC Class Codes: A61F 2013/15447 Fibre dimension, e.g. denier or tex
• CPC Class Codes: A61F 2013/51061 for rendering the surface hydrophobic
• CPC Class Codes: A61F 2013/51078 being embossed
• CPC Class Codes: A61F 2013/51409 being a film
• CPC Class Codes: A61F 2013/51411 being impervious to fluids but not for air or vapours
• CPC Class Codes: A61F 2013/530153 being long
• CPC Class Codes: A61F 2013/530226 with polymeric fibres
• CPC Class Codes: A61F 2013/53024 being bicomponent fibres
• CPC Class Codes: A61F 2013/53035 of cotton
• CPC Class Codes: A61F 2013/53043 with different ratio of components
• CPC Class Codes: Y10T 156/10 Methods of surface bonding and/or assembly therefor

Abstract

A disposable panty shield comprising a thin, highly absorbent pad having a body-contacting surface, an absorbent layer, a liquid barrier, a positioning means for attaching the pad to an undergarment, and a release layer to protect the positioning means prior to use wherein the has been densified by fusing all pad layers together in a manner such that the interstitial space between the individual fibers in the densified areas is not sufficient to readily allow fluid to flow through. Further, the densified areas are made contiguous such that fluid, when introduced or deposited on the pad, will be prevented or hindered from flowing to the edges of the pad.

Claims

1. An absorbent pad having a perimeter and comprising a fibrous, body-side, cover layer;

a fluid impermeable, garment-side backing layer; and

a fibrous absorbent layer therebetween;

wherein the cover layer, the absorbent layer, and the backing layer are each comprised of at least two thermoplastic materials having distinguishable melting points, and wherein the cover layer, the backing layer, and the absorbent layer are melted to each other to substantially fill the interfiber spaces thus forming a first fluid barrier proximate the perimeter and a contiguous second fluid barrier, spaced inwardly from the first fluid barrier to form separate, compartmentalized areas for absorbing liquids.

2. The absorbent pad of claim 1 wherein the at least two thermoplastic materials in the cover and absorbent layers comprise bicomponent fibers.

3. The absorbent pad of claim 1 which further comprises a layer positioned between the absorbent layer and the backing layer which additional layer is comprised of thermoplastic fibers.

4. The absorbent pad of claim 2 wherein the bicomponent fibers are comprised of a polyester core surrounded by a sheath of polyethylene.

5. The absorbent pad of claim 1 wherein the absorbent is further comprised of pulp fluff.

6. The absorbent pad of claim 5 wherein the pulp fluff is present in amounts ranging from about 20% to about 60% by weight and the at least two thermoplastic materials are present in amounts ranging from about 40% to about 80% by weight.

7. The absorbent pad of claim 5 wherein the pulp fluff is present in amounts ranging from about 20% to about 40% by weight and the at least two thermoplastic materials are present in amounts ranging from about 60% to about 80% by weight.

8. The absorbent pad of claim 1 wherein the cover layer has fibers with a denier from about 1.0 to about 4.0.

9. The absorbent pad of claim 8 wherein the absorbent layer has fibers with a denier from about 1.0 to about 4.0.

10. An absorbent pad comprising a fibrous, body-side, cover layer;

a fluid impermeable, garment-side backing layer; and

a fibrous absorbent layer therebetween;

each of said layers comprising at least two thermoplastic materials having distinguishable melting points;

wherein the cover layer, the backing layer, and the absorbent layer are melted to substantially fill the interfiber spaces thus forming a plurality of fluid barriers defining two or more compartmentalized areas for absorbing liquids; and

wherein the cover layer and absorbent layer together comprise at least 60 wt-% thermoplastic fibers.

11. The absorbent pad of claim 10 wherein the at least two thermoplastic materials in the cover and absorbent layers comprise bicomponent fibers.

12. The absorbent pad of claim 10 which further comprises an additional layer positioned between the absorbent layer and the backing layer which additional layer is comprised of thermoplastic fibers.

13. The absorbent pad of claim 11 wherein the bicomponent fibers are comprised of a polyester core surrounded by a sheath of polyethylene.

14. The absorbent pad of claim 10 wherein the absorbent layer is further comprised of pulp fluff.

15. The absorbent pad of claim 10 wherein the cover layer has fibers with a denier from about 1.0 to about 4.0.

16. The absorbent pad of claim 10 wherein the absorbent layer has fibers with a denier from about 1.0 to about 4.0.