Hydrophobic surface coated absorbent articles and associated methods
First Claim
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1. An absorbent article comprising:
- a. a liquid pervious first topsheet having an interior surface and an exterior surface;
b. a backsheet having an interior surface and an exterior surface wherein said backsheet is attached to said topsheet along a periphery;
c. an absorbent core disposed between said topsheet and said backsheet;
d. an additional article component selected from the group consisting of a core cover, a diaper outer cover, an ear, a first cuff, a second cuff, a belt, a wing, an elasticized topsheet, and combinations thereof;
wherein said component has an interior and an exterior surface; and
e. a hydrophobic surface coating disposed on at least one surface of said backsheet or said additional article component such that the hydrophobic surface coating forms a film on at least a portion of the coated surface and increases the barrier properties of the surface;
wherein said coating comprises a mixture of at least two silicone polymers having a molecular weight of at least about 15,000 Mw and wherein said silicone polymers are polydimethylsiloxanes selected from the group consisting of vinyl-terminated polydimethsiloxanes, methyl hydrogen dimethylsiloxanes, hydroxyl-terminated polydimethysiloxanes, and combinations thereof and wherein said coating is substantially free of aminosilicones.
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Abstract
The present invention relates to absorbent articles which include one or more components that have been treated with a hydrophobic surface coating intended to render such components impermeable to liquids having relatively low surface tensions.
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Citations
9 Claims
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1. An absorbent article comprising:
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a. a liquid pervious first topsheet having an interior surface and an exterior surface; b. a backsheet having an interior surface and an exterior surface wherein said backsheet is attached to said topsheet along a periphery; c. an absorbent core disposed between said topsheet and said backsheet; d. an additional article component selected from the group consisting of a core cover, a diaper outer cover, an ear, a first cuff, a second cuff, a belt, a wing, an elasticized topsheet, and combinations thereof;
wherein said component has an interior and an exterior surface; ande. a hydrophobic surface coating disposed on at least one surface of said backsheet or said additional article component such that the hydrophobic surface coating forms a film on at least a portion of the coated surface and increases the barrier properties of the surface;
wherein said coating comprises a mixture of at least two silicone polymers having a molecular weight of at least about 15,000 Mw and wherein said silicone polymers are polydimethylsiloxanes selected from the group consisting of vinyl-terminated polydimethsiloxanes, methyl hydrogen dimethylsiloxanes, hydroxyl-terminated polydimethysiloxanes, and combinations thereof and wherein said coating is substantially free of aminosilicones. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of increasing the hydrophobicity of an absorbent article component, said method comprising the step of depositing on said component a hydrophobic coating such that the hydrophobic coating forms a film on at least a portion of the coated component and increases the barrier properties of the surface;
- wherein said coating comprises a mixture of at least two silicone polymers having a molecular weight of at least about 15,000 Mw and wherein said silicone polymers are polydimethylsiloxanes selected from the group consisting of vinyl-terminated polydimethsiloxanes, methyl hydrogen dimethylsiloxanes, hydroxyl-terminated polydimethysiloxanes, and combinations thereof and wherein said coating is substantially free of aminosilicones.
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8. A disposable substrate article comprising:
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a. a substrate; b. a hydrophobic surface coating disposed on at least one surface of said substrate such that the hydrophobic surface coating forms a film on at least a portion of the coated surface and increases the barrier properties of the surface;
wherein said coating comprises a mixture of at least two silicone polymers having a molecular weight of at least about 15,000 Mw and wherein said silicone polymers are polydimethylsiloxanes selected from the group consisting of vinyl-terminated polydimethsiloxanes, methyl hydrogen dimethylsiloxanes, hydroxyl-terminated polydimethysiloxanes, and combinations thereof and wherein said coating is substantially free of aminosilicones. - View Dependent Claims (9)
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Specification