# US 8,769,722 B2 · Windproof waterproof breathable seamed articles

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- Number: US 8,769,722 B2
- Document ID: US8769722B2
- Status: Granted
- Kind: B2
- Application number: 13/469,545
- Filed: 2012-05-11
- Published: 2012-10-04
- Granted: 2014-07-08
- Earliest claimed: 2004-11-24
- Assignees: W. L. Gore & Associates, Inc.
- Applicants: Mark A. Williams; Jeffrey A. Klein
- Inventors: Mark A. Williams; Jeffrey A. Klein
- Web page: https://patentgrep.com/patent/US8769722B2

## CPC

- A41D 19/0006: {made of several layers of material}
- A41D 19/001: {Linings}
- A41D 27/245: {made by welding or gluing (joining of plastics by welding or gluing B29C65/00; sewing machines for concurrently making thread and welded seams D05B17/00; thermal or chemical fixing of seams and hems D06M)}
- A41D 31/102: Waterproof and breathable
- A43B 7/125: {provided with a vapour permeable member, e.g. a membrane (A43B23/022 takes precedence)}
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 27/08: of synthetic resin
- B32B 27/12: next to a fibrous or filamentary layer
- B32B 27/322: {comprising halogenated polyolefins, e.g. PTFE}
- B32B 27/40: comprising polyurethanes
- A41D: OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A43B: CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

## Abstract

The present invention provides waterproof, breathable non-textile seamed articles which exhibit high levels of durability and allow wearers a high level of flexibility and article strength. This invention is of particular interest for use in dexterous hand coverings and conformable foot coverings.

## Claims

### Claim 1

A seamed article comprising:
(a) a first non-textile material comprising a composite microporous polymer layer and a first polymer layer, the composite microporous layer and the first polymer layer being adhered via an adhesive;
(b) a second non-textile material comprising a second polymer layer; and
(c) a seam joining the first non-textile material to the second non-textile material,
wherein the first polymer layer is adjacent to and in contact with the second polymer layer,
wherein at least one of the first non-textile material and the second non-textile material is breathable and waterproof, and
wherein the first non-textile material differs in composition from the second non-textile material.

### Claim 2 (depends on 1)

The seamed article of claim 1, wherein the first non-textile material exhibits waterproofness and abrasion resistance at greater than 63 cycles as measured according to the procedure set forth in ASTM test method D3886.

### Claim 3 (depends on 1)

The seamed article of claim 1, wherein the first non-textile material and the second non-textile material are breathable.

### Claim 4 (depends on 1)

The seamed article of claim 1, wherein the first non-textile material and the second non-textile material are waterproof.

### Claim 5 (depends on 1)

The seamed article of claim 1, wherein the composite microporous polymer layer comprises two or more microporous materials.

### Claim 6 (depends on 1)

The seamed article of claim 1, wherein the composite microporous polymer layer comprises at least two layers of expanded polytetrafluoroethylene.

### Claim 7 (depends on 1)

The seamed article of claim 1, wherein the article is selected from a hand covering and a foot covering.

### Claim 8 (depends on 1)

The seamed article of claim 1, wherein the article is a barrier to at least one member selected from a chemical agent and a biological agent.

### Claim 9 (depends on 1)

The seamed article of claim 1, wherein the second non-textile material consists of the second polymer layer.

### Claim 10

A seamed article comprising:
a first non-textile material comprising a microporous polymer layer and a first polymer layer, the microporous polymer layer comprising two or more microporous materials;
a second non-textile material comprising a second polymer layer; and
a seam joining the first non-textile material to the second non-textile material,
wherein the microporous polymer layer and the first polymer are adhered via an adhesive layer, and
wherein the microporous materials include two or more dissimilar microporous polymer materials.

### Claim 11 (depends on 10)

The seamed article of claim 10, wherein the microporous materials comprise at least two layers of expanded polytetrafluoroethylene.

### Claim 12 (depends on 10)

The seamed article of claim 10, wherein the first polymer layer is adjacent to and in contact with the second polymer layer.

### Claim 13 (depends on 10)

The seamed article of claim 10, wherein the first non-textile material differs in composition from the second non-textile material.

### Claim 14 (depends on 10)

The seamed article of claim 10, wherein the microporous polymer layer is a composite microporous polymer layer.