# US 11,999,145 B2 · Seat skin, and method for producing seat skin

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- Number: US 11,999,145 B2
- Document ID: US11999145B2
- Status: Granted
- Kind: B2
- Application number: 17/755,833
- Filed: 2020-10-16
- Published: 2022-12-01
- Granted: 2024-06-04
- Earliest claimed: 2019-11-18
- Assignees: Seiren Co., Ltd.
- Applicants: Seiren Co., Ltd.
- Inventors: Naozumi Fuwa
- Web page: https://patentgrep.com/patent/US11999145B2

## CPC

- 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}
- A47C 31/02: Upholstery attaching means
- B29C 59/02: by mechanical means, e.g. pressing {(B29C59/007 takes precedence; embossing expanded porous articles B29C44/5627)}
- B32B 27/40: comprising polyurethanes
- B60N 2/58: Seat coverings
- B60N 2/5891: {characterised by the manufacturing process; manufacturing seat coverings not otherwise provided for}
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- A47C: CHAIRS; SOFAS; BEDS
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B60N: SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR

## Abstract

A seat skin 11 has a front surface layer 12, a back surface layer 13, and pores 15. The inner wall of the pore 15 is covered by the front surface layer 12. The seat skin 11 is produced by forming a base material having at least a front surface layer 12 and a back surface layer 13; sandwiching the base material between a pressing plate having a die for the pores, and a backing plate opposite the pressing plate; pressing the pressing plate against the backing plate with the base material being heated at a temperature that a component contained in the front surface layer 12 does not melt, to form the pores in the base material; and removing the base material having the pores formed therein from between the pressing plate and the backing plate.

## Claims

### Claim 1

A seat skin comprising: a front surface layer; a back surface layer; and pores, wherein
an inner wall of the pore is covered by the front surface layer,
the pore is a through pore, and only an opening peripheral portion of the through pore in the back surface layer is formed of a fused product of a component contained in the front surface layer and/or the back surface layer, and
a back surface of the seat skin where the fused product is formed is smoothly bent into an upward arc shape.

### Claim 2 (depends on 1)

The seat skin of claim 1, wherein
a pore diameter of the pore varies according to depth.

### Claim 3 (depends on 1)

The seat skin of claim 1, wherein
an intermediate layer is provided between the front surface layer and the back surface layer.

### Claim 4 (depends on 1)

The seat skin of claim 1, wherein
the back surface layer includes a cushioning material.

### Claim 5 (depends on 1)

The seat skin of claim 1, wherein
a back cloth is provided on a lower surface of the back surface layer.

### Claim 6 (depends on 1)

The seat skin of claim 1, wherein
the front surface layer and the back surface layer simultaneously or independently contain at least one resin selected from the group consisting of polyester resins, polyamide resins, polyacrylic resins, polyolefin resins, polyvinyl chloride resins, and polyurethane resins.

### Claim 7 (depends on 1)

The seat skin of claim 1, wherein the front surface layer and the back surface layer are integrated into a multilayer sheet and a thickness of the multilayer sheet is 1.3-30 mm.