# US 5,700,564 A · Composite facestocks

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- Number: US 5,700,564 A
- Document ID: US5700564A
- Status: Granted
- Kind: A
- Application number: 08/439,690
- Filed: 1995-05-12
- Granted: 1997-12-23
- Earliest claimed: 1985-02-05
- Assignees: Avery Dennison Corporation
- Inventors: Melvin S. Freedman
- Web page: https://patentgrep.com/patent/US5700564A

## CPC

- B32B 27/08: of synthetic resin
- B32B 27/20: using fillers, pigments, thixotroping agents
- B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)}
- C09J 7/243: {Ethylene or propylene polymers}
- C09J 7/245: {Vinyl resins, e.g. polyvinyl chloride [PVC]}
- G09F 3/02: Forms or constructions (layered products B32B)
- B29C 48/08: flexible, e.g. films
- B29C 48/19: the layers being joined at their edges
- B29K 2995/0072: Roughness, e.g. anti-slip
- B29K 2995/0081: Tear strength
- C09J 2203/334: as a label
- C09J 2301/162: the carrier being a laminate constituted by plastic layers only
- C09J 2301/302: the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
- C09J 2423/006: in the substrate
- C09J 2427/006: in the substrate
- C09J 2431/006: in the substrate
- G09F 2003/0257: {Multilayer}
- Y10S 428/91: Product with molecular orientation
- Y10T 156/1023: Surface deformation only [e.g., embossing]
- Y10T 156/108: Flash, trim or excess removal
- Y10T 428/14: Layer or component removable to expose adhesive
- Y10T 428/1452: Polymer derived only from ethylenically unsaturated monomer
- 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 428/1486: Ornamental, decorative, pattern, or indicia
- Y10T 428/1495: Adhesive is on removable layer
- Y10T 428/24521: with component conforming to contour of nonplanar surface
- Y10T 428/2486: with outer strippable or release layer
- Y10T 428/2495: Thickness [relative or absolute]
- Y10T 428/24967: Absolute thicknesses specified
- Y10T 428/24975: No layer or component greater than 5 mils thick
- Y10T 428/26: Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T 428/28: Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T 428/2839: with release or antistick coating
- Y10T 428/2848: Three or more layers
- Y10T 428/31: Surface property or characteristic of web, sheet or block
- Y10T 428/31855: Of addition polymer from unsaturated monomers
- Y10T 428/31909: Next to second addition polymer from unsaturated monomers
- Y10T 428/31913: Monoolefin polymer
- Y10T 428/3192: Next to vinyl or vinylidene chloride polymer
- Y10T 428/31928: Ester, halide or nitrile of addition polymer
- Y10T 428/31935: Ester, halide or nitrile of addition polymer
- Y10T 428/31938: Polymer of monoethylenically unsaturated hydrocarbon
- 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)
- G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- 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)
- 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
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Film-forming means are coextruded to form all plastic multilayer liners and facestocks for pressure-sensitive labels, tapes, decals, signs, bumper stickers, and other products formed from sheet and roll stock. Fill means in a charge for the liner coextrusion affects stiffness and dimensional stability of the liner and/or affects the roughness of a liner face or faces. The film materials of the layers of the constructions are selected according to the cost/benefit characteristics of candidate materials considering the functional or operational requirements of the layer in question.

## Claims

### Claim 1

A multilayer film facestock having an overall thickness of from 0.5 mil to about 6.5 mils for use in pressure-sensitive adhesive label applications comprising a coextrudate of at least two layers comprising a base layer and at least one skin layer wherein the base layer is thicker than the skin layer, said coextrudate having a face side, said base layer comprising a polymeric film material having a stiffness of from about 10 to 100 Gurley and said skin layer being on the face side of the coextrudate and having an ink-printable surface.

### Claim 2 (depends on 1)

The facestock of claim 1 including a second skin layer on the core or base layer opposite the face side.

### Claim 3 (depends on 1)

The facestock of claim 1 wherein said core or base layer of polymeric thin film material comprises polyethylene of a specific gravity of between about 0.890 and about 0.965 or a propylene polymer or copolymer with a flex modulus range of between about 130,000 and 250,000 psi at 25.degree. C.

### Claim 4 (depends on 1)

The facestock of claim 1 wherein the skin layer comprises ethylene-vinyl acetate or polyvinyl chloride.

### Claim 5 (depends on 1)

The facestock of claim 1 having an overall thickness of from 1.5 to 6.5 mils.

### Claim 6

A multilayer film facestock having an overall thickness of from 0.5 mil to about 6.5 mils for use in pressure-sensitive adhesive label applications comprising a coextrudate of cojoined layers having a face side and comprising a relatively thick core or base layer of polymeric film material having a stiffness of from about 10 to 100 Gurley which provides said facestock with a degree of dimensional stability and stiffness suitable for the labels cut or formed from the facestock, and at least one relatively thin skin layer, said skin layer being on the face side of the coextrudate and having an ink-printable surface.

### Claim 7 (depends on 6)

The facestock of claim 6 having an overall thickness of from 1.5 to 6.5 mils.

### Claim 8 (depends on 6)

The facestock of claim 6 including a second skin layer on the core or base layer opposite the face side.

### Claim 9 (depends on 6)

The facestock of claim 6 wherein said core or base layer of polymeric thin film material comprises polyethylene of a specific gravity of between about 0.890 and about 0.965 or a polypropylene polymer or copolymer with a flex modulus range of between about 130,000 and 250,000 psi at 25.degree. C.

### Claim 10 (depends on 6)

The facestock of claim 6 wherein the skin layer comprises ethylene-vinyl acetate or polyvinyl chloride.

### Claim 11

A multilayer facestock having an overall thickness of from 0.5 mil to about 6.5 mils for use in pressure-sensitive label application comprising a coextrudate of cojoined layers having a face side and comprising a relatively thick core or base layer of polymeric film material and at least one relatively thin skin layer, said skin layer being on the face side of the coextrudate and having an ink-imprintable surface, and the stiffness of the facestock is greater than 10 Gurley.

### Claim 12 (depends on 11)

The facestock of claim 11 including a second skin layer on the core or base layer opposite the face side.

### Claim 13 (depends on 11)

The facestock of claim 11 wherein said core or base layer of polymeric thin film material comprises polyethylene of a specific gravity of between about 0.890 and about 0.965 or a polypropylene polymer or copolymer with a flex modulus range of between about 130,000 and 250,000 psi at 25.degree. C.

### Claim 14 (depends on 11)

The facestock of claim 11 wherein the skin layer comprises ethylene-vinyl acetate or polyvinyl chloride.

### Claim 15

A multilayer film facestock having an overall thickness of from 0.5 mil to about 6.5 mils for use in pressure-sensitive adhesive label applications comprising a multilayer film of at least three layers including a face side, said multilayer film formed from a coextrudate and comprising first and second skin layers, and an interposed core between the first and second skin layers, said core being thicker than either said first skin layer or said second skin layer and having a stiffness of from between 10 and 100 Gurley, said first skin layer being on the face side of said film and preselected to provide an ink-printable skin, and said second skin layer is preselected to provide for pressure-sensitive adhesive anchorage.

### Claim 16 (depends on 15)

The facestock of claim 15 wherein the core comprises polyethylene having a specific gravity of between about 0.890 and about 0.965 or a propylene polymer or copolymer with a flex modulus range of between about 130,000 and 250,000 psi at 25.degree. C.

### Claim 17 (depends on 15)

The facestock of claim 15 wherein the first skin layer comprises polyethylene-vinyl acetate or polyvinyl chloride.