초록 ▼

The present invention relates to breathable absorbent articles, such as sanitary napkins, pantiliners, nursing pads and baby diapers, having a breathable backsheet, and comprising a chitosan material. Absorbent articles are provided that deliver not only initial high performing breathability but als

The present invention relates to breathable absorbent articles, such as sanitary napkins, pantiliners, nursing pads and baby diapers, having a breathable backsheet, and comprising a chitosan material. Absorbent articles are provided that deliver not only initial high performing breathability but also maintain effective breathability in use as well as high protection level while delivering also effective odor control towards odor associated with bodily fluids.

대표청구항 ▼

1. An absorbent article suitable for absorbing bodily fluid comprising a liquid permeable topsheet, a breathable backsheet and an absorbent core, said core being intermediate said topsheet and said backsheet, said article comprising from about 0.5 g/m2 to about 500 g/m2 of a chitosan salt.2. An arti

1. An absorbent article suitable for absorbing bodily fluid comprising a liquid permeable topsheet, a breathable backsheet and an absorbent core, said core being intermediate said topsheet and said backsheet, said article comprising from about 0.5 g/m2 to about 500 g/m2 of a chitosan salt.2. An article according to claim 1 wherein the chitosan salt has a degree of deacetylation of more than 75%.3. An article according to claim 2 wherein the chitosan salt has a degree of deacetylation from about 80% to about 100%.4. An article according to claim 1 wherein the chitosan salt is selected from the group consisting of chitosan salt of citric acid, formic acid, acetic acid, N-acetylglycine, acetylsalicylic acid, fumaric acid, glycolic acid, iminodiacetic acid, itaconic acid, lactic acid, maleic acid, malic acid, nicotinic acid, salicylic acid, succinamic acid, succinic acid, ascorbic acid, aspartic acid, glutamic acid, glutaric acid, malonic acid, pyruvic acid, sulfonyldiacetic acid, benzoic acid, epoxysuccinic acid, adipic acid, thiodiacetic acid, thioglycolic acid, alanine, valine, leucine, isoleucine, prolinephenylalanine, glycine, serine, cysteine, tyrosine, asparagine, glutamine, lysine, arginine, hydroxyproline, pyrrolidone carboxylic acid, chitosonium pyrrolidone carboxylate and mixtures thereof.5. An article according to claim 1, further comprising an absorbent gelling material or a mixture thereof.6. An article according to claim 5, wherein the absorbent gelling material is a synthetic anionic absorbent gelling material or a mixture thereof.7. An article according to claim 5, wherein the level of the absorbent gelling material or a mixture thereof is from about 5 g/m2 to about 250 g/m2.8. An article according to claim 5, wherein the level of the absorbent gelling material or a mixture thereof is from about 7 g/m2 to about 150 g/m2.9. An article according to claim 5 wherein the absorbent gelling agent is located in the absorbent article such that the bodily fluid first contacts the absorbing gelling material before contacting the chitosan salt.10. An article according to claim 5 wherein the absorbent core comprises a tissue laminate comprising two opposite tissue layers, one facing the topsheet and one facing the backsheet, said tissue laminate comprising the chitosan salt and absorbant gelling material disposed between said two tissue layers, wherein the chitosan salt is directed towards the backsheet.11. An absorbent article according to claim 1, further comprising at least an additional odor control agent.12. An article according to claim 11, wherein said additional odor control agent is selected from the group consisting of silicas, zeolites, diatomaceous earth, carbons, starches, cyclodextrine, kieselguhr, clays, ion exchange resins, acids, masking agents, chelating agents, pH buffering means and combination thereof and preferably is silicate, zeolite or a combination thereof.13. An article according to claim 11, which comprises from about 5 g/m2 to about 600 g/m2 of said additional odor control agent.14. An article according to claim 5, further comprising at least an additional odor control agent.15. An article according to claim 11, wherein said additional odor control agent is selected from the group consisting of silicas, zeolites, diatomaceous earth, carbons, starches, cyclodextrine, kieselguhr, clays, ion exchange resins, acids, masking agents, chelating agents, pH buffering means and combination thereof.16. An article according to claim 1 wherein said breathable backsheet comprises at least one layer selected from an apertured polymeric film or a 2-dimensional planar apertured film.17. An article according to claim 16, wherein said layer is a 2 dimensional planar apertured layer, wherein said apertures have an average diameter of from 150 micrometers to 5 micrometers.18. An article according to claim 16, wherein said layer is an apertured polymeric film, wherein said apertures have an average diameter of from 100 micrometers to 500 micrometers.19. An article according to claim 16, wherein said breathable backsheet comprises at least two layers, a first layer comprising an apertured layer and a second layer comprising a fibrous layer.20. An article according to claim 19, wherein said breathable backsheet comprises at least a first layer of a resilient, three dimensional web which consists of a liquid impervious polymeric film having apertures 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 breathable layer being a fibrous nonwoven web made from synthetic fibers having a basis weight of less than 40 g/m2.21. An article according to claim 1 wherein said article is a sanitary napkin, a nursing pad, baby diaper or a panty liner.22. An absorbent article suitable for absorbing bodily fluid comprising a liquid permeable topsheet, a breathable backsheet and an absorbent core, said core being intermediate said topsheet and said backsheet, said article comprising from about 0.5 g/m2 to about 500 g/m2 of a chitosan salt wherein the breathability of said article measured by its air permeability rate in l/m2/s through the article thickness when subjected to 2 ml of artificial menstrual fluid is at least 35% of the air permeability of the dry article.23. An absorbent article suitable for absorbing bodily fluid comprising a liquid permeable topsheet, a breathable backsheet and an absorbent core, said core being intermediate said topsheet and said backsheet, said article comprising from about 0.5 g/m2 to about 500 g/m2 of a chitosan salt.24. The article of claim 23 wherein the chitosan salt is selected from the group consisting of chitosan salt of citric acid, formic acid, acetic acid, N-acetylglycine, acetylsalicylic acid, fumaric acid, glycolic acid, iminodiacetic acid, itaconic acid, lactic acid, maleic acid, malic acid, nicotinic acid, salicylic acid, succinamic acid, succinic acid, ascorbic acid, aspartic acid, glutamic acid, glutaric acid, malonic acid, pyruvic acid, sulfonyldiacetic acid, benzoic acid, epoxysuccinic acid, adipic acid, thiodiacetic acid, thioglycolic acid, alanine, valine, leucine, isoleucine, prolinephenylalanine, glycine, serine, cysteine, tyrosine, asparagine, glutamine, lysine, arginine, hydroxyproline, pyrrolidone carboxylic acid, chitosonium pyrrolidone carboxylate and mixtures thereof.