Airlaid nonwoven
AssigneesFitesa (China) Airlaid Company Limited, Simpsonville, Inc.
InventorsMarc S. Newman, Yu Xin, Jichun Ren, Ding Hua, Yijian Qu
Life of this patent
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Abstract
Provided is a composite sheet material having a first layer and an airlaid nonwoven layer overlying the first layer wherein the airlaid nonwoven layer includes a blend of bamboo derived staple fibers and non-cellulose staple fibers, and in which the airlaid nonwoven layer includes a first surface disposed towards, and thermally bonded, to a surface of the first layer, and a second surface defining an outer surface of the composite sheet material.
Claims21
An absorbent core for an absorbent article, the core comprising 2 to 10 separately formed airlaid layers consisting of staple fibers in which 50 to 100 percent of the staple fibers, based on the total weight of the absorbent core, are bamboo derived staple fibers, and wherein the absorbent core exhibits the following:
- a decrease in thickness from 10 to 60% in comparison to a similar absorbent core in which the similar absorbent core comprises staple fibers derived from conventional wood pulp fibers in lieu of the bamboo derived staple fibers;
- a decrease in machine direction (MD) stiffness from 10 to 50% in comparison to a similar absorbent core in which the similar absorbent core comprises staple fibers derived from conventional wood pulp fibers in lieu of the bamboo derived staple fibers;
- and
- an increase in wicking rate that is from 40 to 120% in comparison to a similar absorbent core in which the similar absorbent core comprises staple fibers derived from conventional wood pulp fibers in lieu of the bamboo derived staple fibers.
An absorbent core for an absorbent article, the absorbent core comprising two or more separately formed airlaid layers consisting of staple fibers and optionally a latex material, wherein the staple fibers include bamboo derived staple fibers, the bamboo derived staple fibers being present in an amount from 75 to 100 weight percent, based on the total weight of the absorbent core, and wherein the bamboo derived staple fibers are bonded to each other via a latex material or via hydrogen bonding, and wherein the absorbent core exhibits the following:
- a decrease in thickness from 10 to 60% in comparison to a similar absorbent core in which the similar absorbent core comprises staple fibers derived from conventional wood pulp fibers in lieu of the bamboo derived staple fibers;
- a decrease in machine direction (MD) stiffness from 10 to 50% in comparison to a similar absorbent core in which the similar absorbent core comprises staple fibers derived from conventional wood pulp fibers in lieu of the bamboo derived staple fibers;
- and
- an increase in wicking rate that is from 40 to 120% in comparison to a similar absorbent core in which the similar absorbent core comprises staple fibers derived from conventional wood pulp fibers in lieu of the bamboo derived staple fibers.
Dependencies are inferred from the claim text.