WATER-ABSORBING LAYERED MATERIAL AND METHOD OF PRODUCING SUCH MATERIAL Russian patent published in 2019 - IPC A47L13/16 B32B5/26 D04H1/4334 

Abstract RU 2687699 C2

FIELD: chemistry.

SUBSTANCE: disclosed is a water-absorbent laminate including: a first fibrous layer comprising a first fibrous structure comprising first hydrophilic fibres; and a second fibrous layer comprising a second fibrous structure, including wet-heat-treated fibres in an amount greater than or equal to 80 wt. %, in which the surface of the first fibrous layer on the opposite side relative to the second fibrous layer has a water absorption rate of less than or equal to 10 s, determined in accordance with the drop method described in JIS L 1907. Also disclosed is a method of producing a water-absorbent laminar material.

EFFECT: water-absorbing laminar material can additionally include a third fibrous layer including a third fibrous structure comprising second hydrophilic fibres between the first fibrous layer and the second fibrous layer.

8 cl, 3 dwg, 3 tbl

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RU 2 687 699 C2

Authors

Nakayama, Kazuhisa

Kiyooka, Sumito

Araida, Yasurou

Dates

2019-05-15Published

2015-06-16Filed