Layered absorbent structure with a heterogeneous layer region
First Claim
1. An absorbent article, comprising:
- a backsheet layer;
a substantially liquid permeable topsheet layer;
an absorbent composite structure sandwiched between the backsheet and topsheet layers, the absorbent composite including an absorbent core having a first, superabsorbent containing, fibrous primary layer region and at least a second, superabsorbent containing, fibrous primary layer region;
at least one of the first and second primary layer regions having a Liquid Wicking Value of at least 38%; and
at least one of the first and second primary layer regions includes a plurality of sublayers;
wherein at least one of the primary layer regions includes a superabsorbent material which exhibits a Tau value of not less than 0.8 min.
1 Assignment
0 Petitions
Accused Products
Abstract
Absorbent articles including an absorbent core having multiple absorbent layers. The absorbent layers interact in a manner which desirably locates absorbed liquid in an appointed, high saturation wicking layer. The localization of the liquid within this wicking layer increases the potential of this layer to move liquid through capillary action due to the higher saturation level and increased amount of liquid available. The intake capability of the absorbent system is maintained or improved over current systems by keeping a second layer of the absorbent system at low saturation levels through as many insults of the absorbent article as possible, while providing enhanced intake performance through appropriate control of the composite properties.
-
Citations
33 Claims
-
1. An absorbent article, comprising:
-
a backsheet layer;
a substantially liquid permeable topsheet layer;
an absorbent composite structure sandwiched between the backsheet and topsheet layers, the absorbent composite including an absorbent core having a first, superabsorbent containing, fibrous primary layer region and at least a second, superabsorbent containing, fibrous primary layer region;
at least one of the first and second primary layer regions having a Liquid Wicking Value of at least 38%; and
at least one of the first and second primary layer regions includes a plurality of sublayers;
wherein at least one of the primary layer regions includes a superabsorbent material which exhibits a Tau value of not less than 0.8 min. - View Dependent Claims (2, 3, 4, 5)
-
-
6. An absorbent article which includes an absorbent core having a first primary layer region and at least a second primary layer region;
- wherein
at least one of the first and second primary layer regions has a Liquid Wicking Value of at least 38%;
at least one of the first and second primary layer regions includes a plurality of sublayers;
the absorbent core has a longitudinal length, a lateral width and an appointed front-most edge;
the first primary layer region has a basis weight of not less than 100 gsm and not more than 500 gsm, the first primary layer region has a first layer region density of not less than 0.03 g/cm3 and not more than 0.4 g/cm3;
the first primary layer region includes fibrous material in an amount which is not less than 25 wt % and is not more than 80 wt %;
the fibrous material includes fibers having fiber sizes which are not less than 4 μ
m and not more than 20 μ
m;
the fibrous material includes fibers which exhibit a water contact angle of not more than 65 degrees;
the first primary layer region includes a superabsorbent material in an amount which is not less than 20 wt % and is not more than 75 wt %;
the superabsorbent material includes superabsorbent particles having dry particle sizes which are not less than 140 μ
m and are not more than 1,000 μ
m;
the superabsorbent material has a MAUL value of not less than 20 g/g; and
the superabsorbent material has a Tau value of not less than 0.8 min. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
- wherein
-
25. An absorbent article, comprising:
-
a backsheet layer;
a substantially liquid permeable topsheet layer;
an absorbent composite structure sandwiched between the backsheet and topsheet layers, the absorbent composite including an absorbent core having a first primary layer region and at least a second primary layer region;
at least one of the first and second primary layer regions having a Liquid Wicking Value of at least 38%; and
at least one of the first and second primary layer regions includes a plurality of sublayers;
whereinthe first primary layer region includes a first superabsorbent having a first Tau value;
the second primary layer region includes a second superabsorbent having a second Tau value; and
the first Tau value is greater than the second Tau value. - View Dependent Claims (26, 27)
-
-
28. An absorbent article, comprising:
-
a backsheet layer;
a substantially liquid permeable topsheet layer;
an absorbent composite structure sandwiched between the backsheet and topsheet layers, the absorbent composite including an absorbent core having a first primary layer region and at least a second primary layer region;
at least one of the first and second primary layer regions having a Liquid Wicking Value of at least 38%; and
at least one of the first and second primary layer regions includes a plurality of sublayers;
whereinthe article is configured for use by an adult, and the absorbent core has a dry thickness of not more than 6 mm, and a minimum crotch width of not more than 14 cm; and
at least one of the primary layer regions includes a superabsorbent material which exhibits a Tau value of not less than 0.8 min. - View Dependent Claims (29, 30, 31)
-
-
32. An absorbent article, comprising:
-
a backsheet layer;
a substantially liquid permeable topsheet layer;
an absorbent composite structure sandwiched between the backsheet and topsheet layers, the absorbent composite including an absorbent core having a first, superabsorbent containing, fibrous primary layer region and at least a second, superabsorbent containing, fibrous primary layer region;
at least one of the first and second primary layer regions having a Liquid Wicking Value of at least 38%; and
at least one of the first and second primary layer regions includes a plurality of sublayers;
whereinat least one of the primary layer regions includes a superabsorbent material having a MAUL value of at least 20 g/g.
-
-
33. An absorbent article, comprising:
-
a backsheet layer;
a substantially liquid permeable topsheet layer;
an absorbent composite structure sandwiched between the backsheet and topsheet layers, the absorbent composite including an absorbent core having a first, superabsorbent containing, fibrous primary layer region and at least a second, superabsorbent containing, fibrous primary layer region;
at least one of the first and second primary layer regions having a Liquid Wicking Value of at least 38%; and
at least one of the first and second primary layer regions includes a plurality of sublayers;
whereinthe absorbent core has a dry thickness of not more than 6 mm, and a minimum crotch width of not more than 10 cm.
-
Specification