Claims
- 1. A disposable thin breathable breast pad having a wearer facing surface and a garment facing surface, said breast pad having a water vapor permeability of more than 100 (g)/(m2/24 hrs) and a stiffness of less than 600 grams.
- 2. A pad according to claim 1, having a water vapor permeability of more than 100 (g)/(m2/24 hrs), more preferably of more than 200 (g)/(m2/24 hrs), and most preferably higher than 300 (g)/(m2/24 hrs).
- 3. A pad according to claim 1 having a stiffness of less than 500 grams, more preferably less than 400 grams, and most preferably of less than 350 grams.
- 4. A pad according to claim 1 having a fluid absorption capacity of at least 0.05 grams per cm2, preferably of at least 0.10 grams per cm2, preferably from 0.15 to 1.50, more preferably from 0.20 to 0.80 and most preferably from 0.25 to 0.6 grams per cm2.
- 5. A pad according to claim 1 having a thickness of less than 5.0 mm, preferably less than 4.0, more preferably from 3.3 to 0.5 mm and most preferably from 3.0 to 1.0 mm.
- 6. A pad according to claim 1 wherein the wearer facing surface and/or the garment facing surface of the pad has a coefficient of friction greater than 1.
- 7. A pad according to claim 1 wherein said pad comprises a liquid permeable and water vapour pervious topsheet, a liquid impermeable, water vapour permeable backsheet and an absorbent core disposed between said topsheet and said backsheet.
- 8. A pad according to claim 7 wherein said absorbent core has a tensile strength under wet condition of at least 550 g/25.4 mm, preferably from 1000 to 6000 g/25.4 mm and more preferably from 1500 to 4000 g/25.4 mm.
- 9. A pad according to claim 7 wherein said absorbent core typically comprising a fibrous matrix and non granular super absorbent gelling material, preferably fibrous super absorbent gelling material.
- 10. A pad according to claim 9 wherein the absorbent core comprises from 0.1% to 95%, preferably from 5% to 80% and most preferably from 10% to 55% by weight of the non granular super absorbent gelling material.
- 11. A pad according to claim 7 wherein said backsheet is a liquid impermeable, water vapour permeable composite structure comprising a hydrophilic thermoplastic film and a support layer.
- 12. A pad according to claim 11, wherein said thermoplastic film comprises from 5% to 100% by weight of a polymer or mixture of polymers.
- 13. A pad according to claim 12, wherein said polymer is selected from the group consisting of polyurethanes, poly-ether-amides block copolymers, polyethylene-acrylic acid copolymers, polyethylene oxide and its copolymers, ethylene acrylic esters copolymers, poly lactide and copolymers, polyamides, polyester block copolymers, sulfonated polyesters, poly-ether-ester block copolymers, poly-ether-ester-amide block copolymers, polyacrylates, polyacrylic acids and derivatives, ionomers, polyethylene-vinyl acetate with a vinyl acetate content of more than 28 weight %, polyvinyl alcohol and its copolymers, polyvinyl ethers and their copolymers, poly-2-ethyl-oxazoline and derivatives, polyvinyl pyrrolidone and its copolymers, thermoplastic cellulose derivatives, and mixtures thereof.
- 14. A pad according to claim 11 wherein said hydrophilic thermoplastic film further comprises from 0% to 95%, preferably from 20% to 90% by weight of a plasticiser, typically selected from the group consisting of citric acid esters, tartaric acid esters, glycerol and its esters, adipates, sebacates, sorbitol, epoxidized vegetal oils, polymerised vegetal oils, polyols, phthalates, liquid polyesters, glycolates, p-toluene sulfonamide and derivatives, glycols and polyglycols, sorbitan esters, phosphates, monocarboxylic fatty acids (C8-C22) and their derivatives, and mixtures thereof.
- 15. A pad according to claim 11 wherein said hydrophilic thermoplastic film further comprises from 0% to 95%, preferably from 2% to 15% by weight of a blend of tackifier resins.
- 16. A pad according to claim 11 wherein the support layer of the composite structure is selected from the group consisting of wovens, nonwovens and apertured films.
- 17. A pad according to claim 1 wherein the garment facing surface is provided by a backsheet which is air permeable, typically having an air permeability higher than 50 l/m2/s, preferably higher than 100 l/m2/s, and more preferably higher than 200 l/m2/s.
- 18. A pad according to claim 17 wherein the backsheet comprises at least a first layer made of a resilient, three dimensional web which consists of a liquid impervious polymeric film having apertures, said apertures preferably forming capillaries which are not perpendicular to the plane of the film but are disposed at an angle of less than 90° relative to the plane of the film, and at least a second layer made of a porous web which is a fibrous nonwoven web having a basis weight of less than 100 g/m2 and preferably less than 50.
- 19. A pad according to claim 1 further comprising chitosan material or a mixture thereof preferably at a level of from 0.1 gm−2 to 500 gm−2, preferably from 0.5 to 200 gm−2, more preferably from 3 gm−2 to 100 gm−2 and most preferably from 4 gm−2 to 50 gm−2.
- 20. A breathable breast pad having a wearer facing surface and a garment facing surface, wherein at least one of said surfaces has a coefficient of friction greater than 1.
- 21. A pad according to claim 20 wherein at least one of said surfaces comprises a non-slip material applied thereto, said material being a non-slip latex or hot melt coating typically selected from the group consisting of ethylene vinyl acetate copolymers, polyvinyl acetate, styrene-butadiene, cellulose acetate butyrate, ethyl cellulose, acrylic acid copolymers, elastomers, synthetic rubber hot melt, hot melt polyethylenes, hot melt polyamides and mixtures thereof and more preferably an elastomer containing urethane bonds and/or an alkyl ester of acrylic acid copolymer based material.
Priority Claims (1)
Number |
Date |
Country |
Kind |
00122215.7 |
Oct 2000 |
EP |
|
CROSS REFERENCE TO RELATED APPLICATION
[0001] This application is a continuation application of prior copending International Application No. PCT/US 01/32058 filed Oct. 15, 2001, designating the U.S.
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/US01/32058 |
Oct 2001 |
US |
Child |
10414514 |
Apr 2003 |
US |