# US 7,608,323 B2 · Protective articles

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- Number: US 7,608,323 B2
- Document ID: US7608323B2
- Status: Granted
- Kind: B2
- Application number: 11/553,676
- Filed: 2006-10-27
- Published: 2007-03-01
- Granted: 2009-10-27
- Earliest claimed: 2001-03-06
- Assignees: 3M Innovative Properties Company
- Inventors: Timothy J. Clemens; Charles D. Hoyle
- Web page: https://patentgrep.com/patent/US7608323B2

## CPC

- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 7/10: at least one layer having inter-reactive properties
- B32B 27/04: as impregnant, bonding, or embedding substance {(not used)}
- B32B 27/12: next to a fibrous or filamentary layer
- B32B 27/304: {comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF}
- B32B 27/322: {comprising halogenated polyolefins, e.g. PTFE}
- C09J 7/22: Plastics; Metallised plastics
- C09J 7/245: {Vinyl resins, e.g. polyvinyl chloride [PVC]}
- C09J 7/35: Heat-activated
- G02B 1/14: Protective coatings, e.g. hard coatings
- B32B 2260/021: Fibrous or filamentary layer
- B32B 2260/046: Synthetic resin
- B32B 2307/584: Scratch resistance
- B32B 2581/00: Seals; Sealing equipment; Gaskets
- C09J 2427/006: in the substrate
- C09J 2433/00: Presence of (meth)acrylic polymer
- C09J 2463/00: Presence of epoxy resin
- C09J 2475/00: Presence of polyurethane
- Y10T 428/24994: Fiber embedded in or on the surface of a polymeric matrix
- Y10T 428/24995: Two or more layers
- Y10T 428/28: Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T 428/31511: Of epoxy ether
- Y10T 428/31515: As intermediate layer
- Y10T 428/31522: Next to metal
- Y10T 428/31529: Next to metal
- Y10T 428/3154: Of fluorinated addition polymer from unsaturated monomers
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The invention provides protective articles comprising a backing that comprises a fluorinated polymer and a curable adhesive on at least one layer of the backing. The protective articles of the invention may be used to provide substrates or articles of the invention having a fluorinated surface. The invention also provides methods of preparing such articles, methods of repairing appliqués, and methods of edge sealing appliqués.

## Claims

### Claim 1

A composite article having a fluoropolymer layer comprising:
a fiber reinforcement impregnated with a curable adhesive composition; and
a fluorinated polymer film that is not perfluorinated in contact with the impregnated reinforcement;
wherein the fluorinated polymer film has a pressure sensitive adhesive layer on at least one surface of the film.

### Claim 2 (depends on 1)

The composite article of claim 1 wherein the fluorinated polymer film has a curable adhesive layer on at least one surface of the film.

### Claim 3 (depends on 2)

The composite article of claim 2 wherein the wherein the curable adhesive layer on at least one surface of the film comprises a curable thermoset adhesive layer.

### Claim 4 (depends on 2)

A composite article comprising a cured composite article of claim 2.

### Claim 5 (depends on 1)

The composite article of claim 1 wherein the fluorinated polymer film comprises a terpolymer of tetrafluoroethylene, hexafluorupropylene, and vinylidene fluoride.

### Claim 6 (depends on 1)

The composite article of claim 1 wherein the fluorinated polymer film has at least one unetched surface.

### Claim 7 (depends on 1)

A composite article comprising a cured composite article of claim 1.