Absorbent core having improved dry/wet integrity
First Claim
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1. An absorbent article comprising:
- a) a liquid pervious topsheet;
b) a liquid impervious backsheet joined to said topsheet;
c) an absorbent core positioned between said topsheet and said backsheet, said absorbent core having a garment facing surface, a body facing surface, and side edges; and
d) a primary core integrity layer enveloping at least a longitudinal portion of said side edges and at least a portion of one of said surfaces, said primary core integrity layer being joined to said topsheet, said primary core integrity layer comprising a continuous mesh of strands of meltblown material, said strands being sinuous and oriented in substantially the same direction with some crosswise linking to form an intertwining web of the strands.
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Abstract
Disclosed is an absorbent article having a liquid pervious topsheet, a liquid impervious backsheet joined to the topsheet, and an absorbent core positioned therebetween, in which the absorbent core is enveloped by a primary core integrity layer comprising a continuous mesh of meltblown material which is joined to the topsheet. The primary core integrity layer is particularly useful for improving the wet integrity of absorbent cores comprising an upper acquisition/distribution layer and a lower storage layer.
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Citations
16 Claims
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1. An absorbent article comprising:
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a) a liquid pervious topsheet; b) a liquid impervious backsheet joined to said topsheet; c) an absorbent core positioned between said topsheet and said backsheet, said absorbent core having a garment facing surface, a body facing surface, and side edges; and d) a primary core integrity layer enveloping at least a longitudinal portion of said side edges and at least a portion of one of said surfaces, said primary core integrity layer being joined to said topsheet, said primary core integrity layer comprising a continuous mesh of strands of meltblown material, said strands being sinuous and oriented in substantially the same direction with some crosswise linking to form an intertwining web of the strands. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An absorbent article comprising:
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a) a liquid pervious topsheet; b) a liquid impervious backsheet joined to said topsheet; c) an absorbent core positioned between said topsheet and said backsheet, said absorbent core comprising; (i) an acquisition/distribution layer comprising chemically stiffened, twisted, curled, intrafiber-crosslinked cellulosic fibers; (ii) a storage layer comprising a mixture of absorbent gelling material and cellulosic fibers; and (iii) a tissue layer positioned between said acquisition/distribution layer and said storage layer; said acquisition/distribution layer, tissue layer, and storage layer each having an upper surface, a lower surface, and side edges;
said absorbent core having a body facing surface formed by said upper surface of said acquisition/distribution layer, a garment facing surface formed by said lower surface of said storage layer, and side edges;d) a primary core integrity layer enveloping at least a longitudinal portion of said side edges of each of said layers of said absorbent core and at least a portion of said garment facing surface of said absorbent core, said primary core integrity layer being joined to said topsheet, said primary core integrity layer comprising a continuous mesh of strands of meltblown material, said strands being sinuous and oriented in substantially the same direction with some crosswise linking to form an intertwining web of the strands; and e) a secondary core integrity layer comprising a continuous mesh of strands of meltblown material positioned between said acquisition/distribution layer and said tissue layer, said strands of said secondary core integrity layer being sinuous and oriented in substantially the same direction with some crosswise linking to form an intertwining web of the strands. - View Dependent Claims (13, 14, 15, 16)
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Specification