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US 2025/0360490 A1Published application
Absorbent body and absorbent article
AssigneeSumitomo Seika Chemicals Co., Ltd.
InventorHironobu KITANAKA
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Abstract
The present invention relates to an absorber including a first water absorption layer, and a second water absorption layer laminated on the first water absorption layer, in which the first water absorption layer contains water-absorbent resin particles (I) having a water retention capacity of physiological saline of 32 to 80 g/g and a one-minute value of a lockup height of 1.6 cm or less, and the second water absorption layer contains water-absorbent resin particles (II) having a one-minute value of a lockup height of more than 1.6 cm.
Claims8
An absorber comprising:
- a first water absorption layer;
- and
- a second water absorption layer laminated on the first water absorption layer,
- wherein the first water absorption layer contains water-absorbent resin particles (I) having a water retention capacity of physiological saline of 32 to 80 g/g and a one-minute value of a lockup height of 1.6 cm or less,
- the second water absorption layer contains water-absorbent resin particles (II) having a one-minute value of a lockup height of more than 1.6 cm, and
- the one-minute value of the lockup height is measured by the following procedures,
- (1) 0.200 g of water-absorbent resin particles are disposed over an entire bottom surface in a cylinder having an inner diameter of 2.0 cm and a depth of 8.0 cm to form a particle layer, and a height of the particle layer is denoted by H0 [cm],
- (2) 20 g of physiological saline is injected to the particle layer to swell the particle layer, and
- (3) the height of the particle layer is recorded as H1′ one minute after a total amount of the physiological saline is injected, and a one-minute value [cm] of the lockup height is calculated from Expression:
- H1′−H0.
7 more elements
Dependencies are inferred from the claim text.