# US 8,541,097 B2 · Polyester laminated film and transfer foil

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- Number: US 8,541,097 B2
- Document ID: US8541097B2
- Status: Granted
- Kind: B2
- Application number: 13/338,312
- Filed: 2011-12-28
- Published: 2012-04-26
- Granted: 2013-09-24
- Earliest claimed: 2005-11-08
- Assignees: Toray Industries, Inc.
- Applicants: Kenichi Yakushidoh; Kokichi Hashimoto; Masahiro Kimura
- Inventors: Kenichi Yakushidoh; Kokichi Hashimoto; Masahiro Kimura
- Web page: https://patentgrep.com/patent/US8541097B2

## CPC

- B29C 51/16: Lining or labelling
- B32B 7/02: Physical, chemical or physicochemical properties
- B32B 7/06: permitting easy separation
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 27/08: of synthetic resin
- B32B 27/18: characterised by the use of special additives
- B32B 27/302: {comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers}
- B32B 27/308: {comprising acrylic (co)polymers}
- B32B 27/36: comprising polyesters
- B44C 1/165: for decalcomanias; sheet material therefor (apparatus or machines for applying decalcomanias B65C)
- B44C 1/1712: {Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive}
- B29C 51/08: Deep drawing or matched-mould forming, i.e. using mechanical means only
- B29K 2067/00: Use of polyesters {or derivatives thereof}, as moulding material
- B29K 2105/256: {Sheets, plates, blanks or films}
- B32B 2255/10: on synthetic resin layer or on natural or synthetic rubber layer
- B32B 2255/26: Polymeric coating
- B32B 2255/28: Multiple coating on one surface
- B32B 2264/02: Synthetic macromolecular particles
- B32B 2264/10: Inorganic particles
- B32B 2270/00: Resin or rubber layer containing a blend of at least two different polymers
- B32B 2307/306: Resistant to heat
- B32B 2307/40: having particular optical properties
- B32B 2307/704: Crystalline
- B32B 2307/738: Thermoformability
- B32B 2307/748: Releasability
- B32B 2307/75: Printability
- B32B 2509/00: Household appliances
- B32B 2605/08: Cars
- B32B 2607/00: Walls, panels
- Y10T 428/1462: Polymer derived from material having at least one acrylic or alkacrylic group or the nitrile or amide derivative thereof [e.g., acrylamide, acrylate ester, etc.]
- Y10T 428/1476: Release layer
- Y10T 428/24802: Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T 428/24942: including components having same physical characteristic in differing degree
- Y10T 428/2848: Three or more layers
- Y10T 428/31681: Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]
- Y10T 428/31786: Of polyester [e.g., alkyd, etc.]
- Y10T 428/31797: Next to addition polymer from unsaturated monomers
- Y10T 428/31938: Polymer of monoethylenically unsaturated hydrocarbon
- 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)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B44C: PRODUCING DECORATIVE EFFECTS (processes for applying liquids or other fluent materials to surfaces, in general B05D; shaping of plastics or substances in a plastic state B29C; printing processes to produce transfer pictures B41M3/12; thermographic duplication or marking methods B41M5/00); MOSAICS; TARSIA WORK (imitation of mosaic or tarsia work patterns B44F11/04); PAPERHANGING {(labels G09F; multi-step processes for making paper labels or tags B31D1/02)}
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A polyester laminated film includes at least a polyester layer, and a highly crystalline polyester layer including a highly crystalline polyester having a crystallinity parameter ΔTcg of 35° C. or lower, wherein both the polyester layer and the highly crystalline polyester layer have a planar orientation coefficient of 0.00 to 0.03.

## Claims

### Claim 1

A polyester laminated film comprising:
at least a polyester layer comprising a polyester, and
a highly crystalline polyester layer comprising a highly crystalline polyester having a crystallinity parameter ΔTeg of 35° C. or lower,
wherein both the polyester layer and the highly crystalline polyester layer have a planar orientation coefficient of 0.00 to 0.03, and
the difference between a crystallization index of the polymer constituting the polyester layer and the crystallization index of the highly crystalline polyester is ≧4%, and wherein the laminated film has a tensile elongation at break at 80° C. of 500% or more and stress at 500% elongation is 10 to 50 MPa.

### Claim 2 (depends on 1)

The polyester laminated film according to claim 1, wherein a glass transition temperature of a polyester constituting the polyester layer is 60 to 78° C.

### Claim 3 (depends on 1)

The polyester laminated film according to claim 1, wherein haze is 10% or less.

### Claim 4 (depends on 1)

The polyester laminated film according to claim 1, wherein the highly crystalline polyester layer is laminated on both surfaces of the polyester layer.

### Claim 5 (depends on 1)

A transfer foil comprising a polyester laminated film according to claim 1, a top coat layer, a printing layer and an adhesive layer, wherein the top coat layer, the printing layer and the adhesive layer are formed on one side of the highly crystalline polyester layer of the polyester laminated film in this order.