# US 8,784,972 B2 · Composite sheet > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,784,972 B2 - Document ID: US8784972B2 - Status: Granted - Kind: B2 - Application number: 12/679,388 - Filed: 2008-10-30 - Published: 2010-08-19 - Granted: 2014-07-22 - Earliest claimed: 2007-11-26 - Assignees: Kao Corporation - Applicants: Kenichi Sato; Kenji Ando; Takuaki Harada; Yasuhiro Nakano - Inventors: Kenichi Sato; Kenji Ando; Takuaki Harada; Yasuhiro Nakano - Web page: https://patentgrep.com/patent/US8784972B2 ## CPC - B32B 3/28: characterised by a layer comprising a deformed thin sheet {, i.e. the layer having its entire thickness deformed out of the plane}, e.g. corrugated, crumpled (B32B29/08 takes precedence) - A61F 13/51104: {the top sheet having a three-dimensional cross-section, e.g. corrugations, embossments, recesses or projections} - B32B 3/266: {characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12} - B32B 5/26: another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)} - B32B 38/06: Embossing - B32B 7/02: Physical, chemical or physicochemical properties - B32B 2250/20: All layers being fibrous or filamentary - B32B 2307/718: Weight, e.g. weight per square meter - B32B 2307/726: Permeability to liquids, absorption - B32B 2307/734: Dimensional stability - B32B 2309/14: Velocity, e.g. feed speeds - B32B 2432/00: Cleaning articles, e.g. mops or wipes - B32B 2555/00: Personal care - Y10T 156/1002: with permanent bending or reshaping or surface deformation of self sustaining lamina - Y10T 428/24281: Struck out portion type - Y10T 428/24331: including nonapertured component - Y10T 428/24479: including variation in thickness - Y10T 428/24562: Interlaminar spaces - Y10T 428/24595: and varying density - Y10T 428/24612: Composite web or sheet - Y10T 428/24661: Forming, or cooperating to form cells - Y10T 428/24678: Waffle-form - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract Disclosed is a composite sheet 1 composed of a substantially flat lower fibrous sheet 3 and an upper fibrous sheet 2 bonded to the lower fibrous sheet 3. The upper fibrous sheet 2 is three-dimensionally textured with a number of projections 5 and a number of depression 6 each of which is located between every adjacent two of the projections 5. The projections 5 and the depressions 6 alternate in both a first direction of the composite sheet 1 and a second direction perpendicular to the first direction. Each projection 5 has a pair of opposing first walls 51 parallel to the first direction and a pair of opposing second walls 52 parallel to the second direction. The basis weight of the first walls 51 is different from that of the second walls 52. ## Claims ### Claim 1 A composite sheet comprising a substantially flat lower fibrous sheet and an upper fibrous sheet bonded to the lower fibrous sheet, the upper fibrous sheet being three-dimensionally textured with a number of projections and a number of depression each of which is located between every adjacent two of the projections, the projections and the depressions alternating in a first direction of the composite sheet and in a second direction perpendicular to the first direction, the projections each having a pair of opposing first walls parallel to the first direction, a pair of opposing second walls parallel to the second direction, and a top plane connected to the upper edge of each first wall and the upper edge of each second wall, and the basis weight of each first wall being different from that of each second wall; wherein the projections and the depressions are arranged in a staggered pattern in which the projections and the depressions alternating in a line extending in the first direction of the composite sheet are out of alignment with the projections and the depressions of the adjacent lines by half the pitch; wherein the projections are hollow; and wherein individual depressions partly adjoin at least one other depression. ### Claim 2 (depends on 1) The composite sheet according to claim 1, wherein the first walls are parallel to the machine direction of the composite sheet, the second walls are parallel to the cross direction of the composite sheet, and the basis weight of the first walls is smaller than that of the second walls. ### Claim 3 (depends on 2) The composite sheet according to claim 2, wherein the first wall of the projection has a hole. ### Claim 4 (depends on 1) The composite sheet according to claim 1, which is used on a skin facing side of an absorbent article having an absorbent member with the upper fibrous sheet being adapted to face the skin of a wearer and the lower fibrous sheet facing the absorbent member. ### Claim 5 (depends on 1) An absorbent article comprising an absorbent member and the composite sheet according to claim 1, the upper fibrous sheet being adapted to face the skin of a wearer and the lower fibrous sheet facing the absorbent member. ### Claim 6 (depends on 5) The absorbent article according to claim 5, wherein the first walls are parallel to a longitudinal direction of the absorbent article, the second walls are parallel to a lateral direction of the absorbent article, and the basis weight of the first walls is smaller than that of the second walls. ### Claim 7 (depends on 1) The composite sheet according to claim 1, wherein the lower fibrous sheet is substantially inextensible. ### Claim 8 (depends on 1) The composite sheet according to claim 1, wherein the lower fibrous sheet has a basis weight of 5 to 50 g/m2.