LAYERED BODY AND METHOD FOR PRODUCING SAME

• US 20190322072A1
• Filed: 11/10/2017
• Published: 10/24/2019
• Est. Priority Date: 11/22/2016
• Status: Active Grant

• Current Assignee: Midori Auto Leather Co., Ltd.
• Original Assignee: Midori Auto Leather Co., Ltd.
• Inventors: YOSHIKAWA, Yukari
• Granted Patent: US 11,001,030 B2
• Time in Patent Office: Days
• CPC Class Codes: B32B 2250/03 3 layers
• CPC Class Codes: B32B 2250/04 4 layers
• CPC Class Codes: B32B 2250/05 5 or more layers
• CPC Class Codes: B32B 2266/0278 Polyurethane
• CPC Class Codes: B32B 2307/732 Dimensional properties
• CPC Class Codes: B32B 2451/00 Decorative or ornamental articles wall paper B32B2607/02
• CPC Class Codes: B32B 2601/00 Upholstery
• CPC Class Codes: B32B 2605/003 Interior finishings
• CPC Class Codes: B32B 2605/08 Cars
• CPC Class Codes: B32B 27/065 of foam
• CPC Class Codes: B32B 27/12 next to a fibrous or filamentary layer
• CPC Class Codes: B32B 3/26 characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids foam layer B32B5/18; layer of synthetic resin characterised by fillers that create voids or cavities B32B27/205; characterised by an apertured layer
• CPC Class Codes: B32B 3/263 characterised by a layer having non-uniform thickness
• CPC Class Codes: 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
• CPC Class Codes: B32B 3/30 characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs apertured layer B32B3/266; layer with cavities or internal voids B32B3/26
• CPC Class Codes: B32B 5/022 Non-woven fabric
• CPC Class Codes: B32B 5/028 Net structure, e.g. spaced apart filaments bonded at the crossing points
• CPC Class Codes: B32B 5/06 characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
• CPC Class Codes: B32B 5/18 characterised by features of a layer of foamed material
• CPC Class Codes: B32B 7/05 the layers not being connected over the whole surface, e.g. discontinuous connection or patterned connection using interposed adhesives or bonding materials applied in spaced arrangements B32B7/14
• CPC Class Codes: B32B 7/09 : by stitching, needling or sewing by mechanically connecting fibrous layers to another layer B32B5/06
• CPC Class Codes: B32B 7/12 : using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: B32B 9/025 : comprising leather
• CPC Class Codes: B32B 9/045 : of synthetic resin
• CPC Class Codes: B60N 2/58 : Seat coverings
• CPC Class Codes: B60N 2/5891 : characterised by the manufacturing process; manufacturing seat coverings not otherwise provided for
• CPC Class Codes: B68G 7/08 : Quilting tools B68G15/00; Elements therefor
• CPC Class Codes: B68G 7/12 : Other elements specially adapted for fastening, fixing, or finishing, in upholstery work

Abstract

A layered body includes a cover or skin layer, a cushion layer, an adhesive layer. The skin layer is made from a cover or skin material. The cushion layer is made from a cushioning material. The adhesive layer is made from an adhesive and provided between the skin layer and the cushion layer. A portion of the skin layer located between valleys of the cushion layer and corresponding to a bottom portion of a concave portion has negative curvature in the side view. The bottom portion of the concave portion between the valleys in a surface of the cushioning layer on which the adhesive layer is provided has positive curvature or is flat in the side view.

Claims

1. A layered body comprising:

a skin layer made from a skin material;

a cushioning layer made from a cushioning material;

an adhesive layer made from an adhesive and provided between the skin layer and the cushioning layer;

wherein the cushioning layer comprises a concave portion,

wherein the concave portion of the cushioning layer comprises a pair of valleys,

wherein a portion of the skin layer located between the valleys and corresponding to a bottom portion of the concave portion has negative curvature in the side view, and

wherein the bottom portion of the concave portion between the valleys in a surface of the cushioning layer on which the adhesive layer is provided has positive curvature or is flat in the side view.

2. The layered body according to claim 1, further comprising a porous layer between adhesive layer and the cushioning layer.

3. The layered body according to claim 2, wherein the porous layer is a nonwoven fabric or a mesh material.

4. The layered body according to claim 1, wherein a space is provided in a portion corresponding to the valley of the cushioning layer in the side view between a surface of the skin layer on which the adhesive layer is provided and a surface of the cushioning layer on which the adhesive layer is provided.

5. A method for producing a layered body comprising:

forming a convex portion on a first surface of a cushioning layer made from a cushioning material;

providing an adhesive layer made from an adhesive on a first surface of a skin layer made from a skin material;

pressing the skin layer to the first surface of the cushioning layer at a predetermined pressure; and

reforming the convex portion on the first surface of the cushioning layer by releasing the predetermined pressure to bulge the first surface of the cushioning layer by restoring force of the cushioning layer that is pressed,

wherein the forming, the providing, the pressing and the reforming are performed in the above order, and

wherein a second surface of the skin layer has negative curvature in the side view, and the first surface of the cushioning layer has positive curvature or is flat in the side view.