Claims
- 1. A moisture vapor permeable, liquid impervious composite structure comprising a hydrophilic thermoplastic film and a support layer, the support layer having a first surface and a second opposing surface, wherein the first surface of the support layer is facing the hydrophilic thermoplastic film and the second surface has a coefficient of friction greater than about 1.
- 2. A composite structure according to claim 1, wherein the second surface of the support layer has a coefficient of friction greater than about 1.5.
- 3. A composite structure according to claim 1, wherein the second surface of the support layer comprises a non-slip material applied thereto, said material being a non-slip latex or hot melt coating selected from the group consisting of ethylene vinyl acetate copolymers, polyvinyl acetate, styrene-butadiene, cellulose acetate butyrate, ethyl cellulose, acrylic acid copolymers, elastomers, rubber hot melt, hot melt polyethylenes, hot melt polyamides and mixtures thereof.
- 4. A moisture vapor permeable, liquid impervious composite structure comprising a hydrophilic thermoplastic film and a support layer, the support layer having first and second opposing surfaces, wherein the first surface of the support layer is facing the hydrophilic thermoplastic film and the second surface has a coefficient of friction greater than about 1, said second surface comprising a non-slip material, said non-slip material comprising an elastomer containing urethane bonds and/or an alkyl ester of acrylic acid copolymer based material.
- 5. A composite structure according to claim 4, wherein said non-slip material is disposed in a discontinuous pattern.
- 6. A composite structure according to claim 4, wherein said thermoplastic film comprises from about 5% to about 100% by weight of a polymer or mixture of polymers.
- 7. A composite structure according to claim 6, 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.
- 8. A composite structure according to claim 6, wherein said thermoplastic film further comprises from about 20% to about 90% by weight of a hydrophyllic plasticiser.
- 9. A composite structure according to claim 8, wherein said plasticiser is selected from the group consisting of citric acid esters, tartaric acid esters, glycerol and its esters, adipates, sebacates, sorbitol, epoxidized vegetal oils, polymerised vegetable 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.
- 10. A composite structure according to claim 6, wherein said thermoplastic film further comprises from about 5% to about 50%, by weight of a tackifier resin or blend of tackifier resins, a least one of said resins being liquid at room temperature.
- 11. A composite structure according to claim 3, which has a water vapor transfer rate of at least 100 g/(m2/24 hr.).
- 12. A composite structure according to claim 1, wherein said support layer is selected from the group consisting of wovens, nonwovens and apertured films.
- 13. An absorbent article according to claim 12 comprising a composite structure.
- 14. An absorbent article according to claim 13, wherein the composite structure is used as the backsheet of the absorbent article, the second surface of the support layer directly facing the garment of the wearer of such an article.
- 15. An absorbent article according to claim 14, wherein said article is a pantiliner, sanitary napkin, diaper, perspiration pad, incontinence product, protective bedding covers, protective clothing, a mattress cover or a breast pad.
- 16. A composite structure according to claim 5, wherein said coefficient of friction is directionally asymmetric.
- 17. A composite structure according to claim 16 having an edge, wherein said non-slip material is disposed in rows, said rows being oriented oblique relative to said edge.
- 18. A composite structure according to claim 16, wherein said non-slip material is discontinuous and covers only a portion of said composite structure, a portion of said composite structure being free of said non-slip material.
Priority Claims (1)
Number |
Date |
Country |
Kind |
00122216.5 |
Oct 2000 |
WO |
|
CROSS REFERENCE TO PRIOR APPLICATION
[0001] This is a continuation of International Application PCT/US01/32057, with an international filing date of Oct. 15, 2001, and published in English, which claims priority to EP 00122216.5, filed Oct. 15, 2000.
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/US01/32057 |
Oct 2001 |
US |
Child |
10414675 |
Apr 2003 |
US |