Stretchable absorbent composite
First Claim
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1. An absorbent composite comprising:
- (a) a first layer;
(b) a second layer;
(c) an absorbent positioned between said first and second layers; and
(d) an elastic layer positioned between said first layer and said absorbent, said elastic layer being resiliently stretchable in at least one direction from about 25% to 80% of an initial unstretched length with an elastic recovery of at least 10%, said elastic layer being bonded to both said first layer and said absorbent in at least a partially stretched condition wherein rugosities are formed in a substantial portion of both said absorbent and said first layer when said elastic layer is relaxed.
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Abstract
The stretchable composite comprises a liquid-pervious layer, liquid-impervious layer, an absorbent layer, and a stretchable layer. The stretchable layer is stretch-bonded to the other layers and, upon relaxing the stretched layer, a plurality of rugosities are formed in the liquid-pervious layer, liquid-impervious layer, and absorbent layer. A method is provided for making the composite.
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Citations
30 Claims
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1. An absorbent composite comprising:
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(a) a first layer; (b) a second layer; (c) an absorbent positioned between said first and second layers; and (d) an elastic layer positioned between said first layer and said absorbent, said elastic layer being resiliently stretchable in at least one direction from about 25% to 80% of an initial unstretched length with an elastic recovery of at least 10%, said elastic layer being bonded to both said first layer and said absorbent in at least a partially stretched condition wherein rugosities are formed in a substantial portion of both said absorbent and said first layer when said elastic layer is relaxed. - View Dependent Claims (2)
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3. An absorbent composite comprising:
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a first layer having an outer surface and an inner surface; a second layer; an absorbent positioned between said first and second layers, said absorbent having first and second major surfaces one of which is attached to said inner surface of said first layer; and an elastic layer positioned between said inner surface of said first layer and said absorbent, said elastic being resiliently stretchable in at least one direction and attached in an elastically contractible condition to said inner surface of said first layer, said elastic layer extending over a substantial portion of said major surface of said absorbent and causing a plurality of rugosities to form in both said absorbent and said first layer when said elastic layer is in at least a partially relaxed condition whereby said rugosities render said absorbent elastically contractible to fit a range of user body sizes and assist in providing a dry surface adjacent to the user'"'"'s skin. - View Dependent Claims (4, 5, 6, 7, 8)
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9. An absorbent composite comprising:
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a first layer; a second layer; an absorbent positioned between said first and second layers; an elastic layer disposed between said first layer and said absorbent, said elastic layer being resiliently stretchable in at least one direction and attached in at least a partially stretched condition to said first layer, said first layer being attached to said absorbent, said elastic layer causing a plurality of rugosities to be formed in both said absorbent and said first and second layers when said elastic layer is relaxed, rendering a substantial portion of said composite elastically contractible to fit a range of user body sizes while presenting a distinctively dry surface adapted for contact with the user'"'"'s skin. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An absorbent composite comprising:
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a liquid pervious layer; a liquid-impervious layer; an absorbent positioned between said liquid pervious and impervious layers, said absorbent having first and second surfaces; an elastic layer positioned between said liquid pervious layer and one of said first and second surfaces of said absorbent, said elastic layer being resiliently stretchable in at least one direction and attached to said liquid pervious layer and to said absorbent in a stretched condition, forming rugosities in said absorbent and said liquid pervious layer when said elastic layer is relaxed, thereby rendering a substantial portion of said absorbent elastically contractible to allow said article to fit a range of user body sizes. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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29. An absorbent composite comprising:
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a liquid pervious cover; a liquid-impervious baffle; an absorbent positioned between said cover and baffle, said absorbent having first and second surfaces; a liquid transfer layer positioned between said cover and said first surface of said absorbent for transferring liquid deposited on said cover generally in the Z directions toward said absorbent; a wicking layer positioned between said second surface of said absorbent and said baffle for wicking liquid generally in the X- and Y-directions; and an elastic layer positioned between said transfer layer and said first surface of said absorbent, said elastic layer being resiliently stretchable from about 25% to 800% of an initial length in a direction corresponding to the longitudinal axis of said composite wherein said elastic layer is attached in a stretched condition to said liquid transfer layer whereby rugosities are formed in said absorbent, said transfer layer and said elastic layer when said elastic layer is relaxed, rendering a substantial portion of said composite elastically contractible to fit a range of user body sizes. - View Dependent Claims (30)
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Specification