Absorbent product with nonpermeable surface sheet
AssigneeJapan Absorbent Technology Institute
InventorsMigaku Suzuki, Reiko Moriya
Life of this patent
Estimating the term…
Abstract
An absorbent product capable of preventing the absorbing rate from significantly lowering with the elapse of time, from the start of use to a final stage when the absorbing capacity of the product reaches a limit, is provided. The absorbent product has a very small re-wet amount. The absorbent product includes a liquid-impermeable surface sheet positioned on the upper side, a liquid-impermeable back sheet positioned on the lower side, and an absorber containing super absorbent polymer to absorb discharged liquid positioned between the surface sheet and the back sheet, wherein a flow passage is provided to allow a part or all of the discharged liquid supplied to the surface sheet to move to a side of the back sheet.
Claims38
An absorbent product, comprising:
- a surface sheet which is liquid-impermeable;
- a back sheet which is liquid-impermeable positioned under the surface sheet;
- and
- an absorber including super absorbent polymer, the absorber being positioned between a lower side of the surface sheet and the back sheet, wherein
- the surface sheet fully covers in a lateral direction, and partially or fully covers in a longitudinal direction, an upper surface of the absorber, the longitudinal direction being a direction from front to back of a wearer's body when the absorbent product is worn and perpendicular to the lateral direction,
- the back sheet fully covers a lower surface of the absorber in the longitudinal direction and the lateral direction, and includes a left wall and a right wall, the left wall and the right wall extending along a left side and a right side of the absorber respectively, and exceeding the surface sheet in a lamination direction in which the absorber and the surface sheet are laminated on the back sheet,
- a set of flow passages formed in the longitudinal direction beginning an upper side of the surface sheet where a discharged liquid is supplied from the wearer's body, each flow passage exceeding each lateral end of the surface sheet and extending along a space between the left and right walls of the back sheet and the left and right sides of the absorber respectively, and
- each flow passage is provided such that at least a part of the discharged liquid flows off from the surface sheet into at least one of the flow passages, toward the back sheet and moves between the back sheet and the absorber.
Dependencies are inferred from the claim text.