# US 11,161,330 B2 · Laminate and airbag

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- Number: US 11,161,330 B2
- Document ID: US11161330B2
- Status: Granted
- Kind: B2
- Application number: 16/620,692
- Filed: 2018-06-15
- Published: 2020-04-23
- Granted: 2021-11-02
- Earliest claimed: 2017-06-16
- Assignees: Nitto Denko Corporation; Nitto Switzerland AG
- Applicants: Nitto Denko Corporation; Nitto Switzerland AG
- Inventors: Yosuke Yamada; Toru Tagami; Michael Ludwig
- Web page: https://patentgrep.com/patent/US11161330B2

## CPC

- B32B 27/12: next to a fibrous or filamentary layer
- B32B 5/24: one layer being a fibrous or filamentary layer
- B32B 27/36: comprising polyesters
- B60R 21/235: characterised by their material
- B32B 2605/00: Vehicles
- B60R 2021/23509: {Fabric}
- B60R 2021/23523: {Composite}
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR

## Abstract

A laminate includes a fabric; and a thermoplastic film, wherein the thermoplastic film is a multilayer film including an adhesive layer including a thermoplastic polyester elastomer and a barrier layer that is bonded to the adhesive layer, and that has a melting point that is higher than a melting point of the adhesive layer, and that includes a polymer, and wherein the fabric includes a polyester, and the fabric has a fabric weight of 190 g/m2 or less.

## Claims

### Claim 1

An airbag formed using a laminate, the laminate comprising:
a fabric; and
a thermoplastic film, wherein
the thermoplastic film is a multilayer film including
an adhesive layer including a thermoplastic polyester elastomer; and
a barrier layer that includes a thermoplastic polyester elastomer, wherein the thermoplastic polyester elastomer included in the barrier layer has a melting point that is higher than a melting point of the adhesive layer, and the barrier layer being bonded to the adhesive layer,
the adhesive layer is a plurality of layers,
the thermoplastic polyester elastomer included in the adhesive and the barrier layers comprises soft segments and hard segments, wherein a content of soft segments in the thermoplastic polyester elastomer included in the barrier layer is 5 wt % to 60 wt % relative to the total weight of the thermoplastic polyester elastomer in the barrier layer,
the fabric includes a polyester, and
the fabric has a fabric weight of 190 g/m2 or less, wherein
the fabric is formed to have a shape of a bag, and
the multilayer film is formed on a surface of the fabric.

### Claim 2 (depends on 1)

The airbag according to claim 1, wherein the thermoplastic polyester elastomer included in the adhesive layer is a block copolymer including a soft segment including a polyether and a hard segment including a polyester.

### Claim 3 (depends on 1)

The airbag according to claim 1, wherein the melting point of the barrier layer is higher than the melting point of the adhesive layer by more than 20° C.

### Claim 4 (depends on 1)

The airbag according to claim 1, wherein the fabric has a warp yarn or a weft yarn having a weave density of from 5 pcs/cm to 15 pcs/cm.

### Claim 5 (depends on 1)

The airbag according to claim 1, wherein the melting point of the barrier layer is greater than or equal to 180° C.