Water absorbing resin particles and method for producing same, absorbent body. absorbent article, and method for adjusting permeation speed
AssigneeSumitomo Seika Chemicals Co., Ltd.
InventorTakashi ITO
Life of this patent
Estimating the term…
Abstract
Water-absorbent resin particles 10a, in which a gel flow rate measured by the following procedures having (1) to (3) is 10 to 70 g/min: (1) mixing 1 part by mass of the water-absorbent resin particles and 199 parts by mass of water to obtain a gel, (2) accommodating the gel in a funnel in a state where a circular lower end opening with a diameter of 8 mm in the funnel is closed, and (3) measuring an outflow amount of the gel per unit time after a lapse of 3 minutes from opening of the lower end opening as the gel flow rate.
Claims15
Water-absorbent resin particles,
- wherein a gel flow rate measured by the following procedures having (1) to (3) is 10 to 70 g/min,
- (1) mixing 1 part by mass of the water-absorbent resin particles and 199 parts by mass of water to obtain a gel,
- (2) accommodating the gel in a funnel in a state where a circular lower end opening with a diameter of 8 mm in the funnel is closed, and
- (3) measuring an outflow amount of the gel per unit time after a lapse of 3 minutes from opening of the lower end opening as the gel flow rate.
A method for producing water-absorbent resin particles, the method comprising
- selecting water-absorbent resin particles based on a gel flow rate measured by the following procedures having (1) to (3),
- (1) mixing 1 part by mass of the water-absorbent resin particles and 199 parts by mass of water to obtain a gel,
- (2) accommodating the gel in a funnel in a state where a circular lower end opening with a diameter of 8 mm in the funnel is closed, and
- (3) measuring an outflow amount of the gel per unit time after a lapse of 3 minutes from opening of the lower end opening as the gel flow rate.
A method for adjusting a permeation rate in an absorbent article comprising an absorber,
- wherein the absorber comprises water-absorbent resin particles, and
- the method comprises adjusting a gel flow rate measured by the following procedures having (1) to (3),
- (1) mixing 1 part by mass of the water-absorbent resin particles and 199 parts by mass of water to obtain a gel,
- (2) accommodating the gel in a funnel in a state where a circular lower end opening with a diameter of 8 mm in the funnel is closed, and
- (3) measuring an outflow amount of the gel per unit time after a lapse of 3 minutes from opening of the lower end opening as the gel flow rate.
Dependencies are inferred from the claim text.