Composite sheet and absorbent article using the composite sheet
AssigneeUni-Charm Corporation
InventorsYuki Noda, Kenichiro Kuroda
Life of this patent
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Abstract
It is intended to provide an absorbent article provided with a composite sheet which comprises a film sheet and a fiber mass and is excellent in the ability to draw in a liquid and the ability to prevent the backward flow. Namely, an absorbent article provided with a composite sheet comprising a film sheet having multiple pores formed therein and a fiber mass laminated on one side of the film sheet, wherein the fiber mass has a projected section in which a part of the fiber mass projects through the multiple pores toward the other side of the film sheet.
Claims17
A composite sheet, comprising:
- a film sheet having a plurality of openings and/or a plurality of slits;
- and
- a fiber aggregate layered on a first side of the film sheet,
- wherein
- the fiber aggregate includes a plurality of projecting regions that project to a second side of the film sheet opposite to the first side, through the plurality of openings and/or the plurality of slits, each of the projecting regions including a base portion,
- the film sheet includes a groove disposed between a pair of adjacent projecting regions among the plurality of projecting regions and having
- a bottom
- two branches both extending from the bottom in a projecting direction of the projecting regions and covering at least a portion of the base portion of one of the adjacent projecting regions, and the projecting regions are disposed in a staggered manner.
A method of manufacturing a composite sheet, said method comprising:
- disposing a substantially fiber aggregate on a first side of a film sheet to define a composite sheet;
- and
- pushing the composite sheet by a predetermined projecting region forming device from the first side of the film sheet toward a second side of the film sheet, said second side being opposite to the first side, to form a plurality of projecting regions projecting from the second side of the film sheet
- wherein the predetermined projecting region forming device includes
- a first member having a plurality of openings that are disposed in a staggered manner;
- and
- a second member having a plurality of projections that correspond to the plurality of openings and are disposed in the staggered manner to form the projecting regions arranged in the staggered manner.
Dependencies are inferred from the claim text.