# US 12,002,385 B2 · Laminate and label

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- Number: US 12,002,385 B2
- Document ID: US12002385B2
- Status: Granted
- Kind: B2
- Application number: 17/414,096
- Filed: 2019-12-20
- Published: 2022-02-10
- Granted: 2024-06-04
- Earliest claimed: 2018-12-21
- Assignees: Nippon Carbide Industries Co., Inc.
- Applicants: Nippon Carbide Industries Co., Inc.
- Inventors: Kyoko Shiomi
- Web page: https://patentgrep.com/patent/US12002385B2

## CPC

- G09F 3/02: Forms or constructions (layered products B32B)
- G09F 3/0291: {Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time}
- B23K 26/53: for modifying or reforming the material inside the workpiece, e.g. for producing break initiation cracks
- B32B 7/023: Optical properties
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 27/08: of synthetic resin
- B32B 27/10: of paper or cardboard
- B32B 27/20: using fillers, pigments, thixotroping agents
- B32B 27/308: {comprising acrylic (co)polymers}
- B32B 27/36: comprising polyesters
- B32B 27/365: {comprising polycarbonates}
- B32B 27/40: comprising polyurethanes
- C09J 7/29: Laminated material (metallised plastics C09J7/22)
- B23K 26/362: Laser etching
- B32B 7/06: permitting easy separation
- B32B 2250/03: 3 layers
- B32B 2255/10: on synthetic resin layer or on natural or synthetic rubber layer
- B32B 2255/26: Polymeric coating
- B32B 2264/102: Oxide or hydroxide
- B32B 2307/412: Transparent
- B32B 2307/416: Reflective
- B32B 2307/71: Resistive to light or to UV
- B32B 2307/732: Dimensional properties
- B32B 2307/748: Releasability
- B32B 2405/00: Adhesive articles, e.g. adhesive tapes
- B32B 2519/00: Labels, badges
- B41M 5/24: Ablative recording, e.g. by burning marks; Spark recording {(marking by high energetic means, e.g. by laser otherwise than burning or ablative removal B41M5/26; materials or methods for recording or reproduction by optical means G11B7/00)}
- C09J 2203/334: as a label
- C09J 2301/416: use of irradiation
- C09J 2400/123: in the substrate
- C09J 2467/006: in the substrate
- G09F 2003/0201: {Label sheets intended to be introduced in a printer, e.g. laser printer}
- G09F 2003/0225: {Carrier web}
- G09F 2003/023: {Adhesive}
- G09F 2003/0257: {Multilayer}
- G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- 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)
- B41M: PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING, (correction of typographical errors B41J; processes for applying transfer pictures or the like B44C1/16; fluid media for correction of typographical errors by coating C09D10/00; printing textiles D06P)

## Abstract

Provided is a laminate and label for laser printing which are capable of preventing or reducing the occurrence of failure in printing by laser light irradiation. A laminate (1) is at least a laminate for laser printing, including a first layer (31) having a property of shielding against laser light, a second layer (32) having a property of absorbing the laser light, and a base material layer (33) which is optically transparent, which are stacked in the order named. The second layer (32) may have a thickness of not more than 15 μm, and may have a specific composition.

## Claims

### Claim 1

A laminate for laser printing, comprising:
a first layer having a property of shielding against laser light;
a second layer having a property of absorbing the laser light;
a base material layer which is optically transparent; and
a third layer having a property of absorbing the laser light,
the first layer, the second layer, the base material layer, and the third layer being stacked in the order named,
the second layer having a thickness of not more than 15 μm,
the third layer having the same hue as the second layer, and
the third layer further has a visible color difference from the first layer.

### Claim 2 (depends on 1)

The laminate as set forth in claim 1, wherein the second layer contains an organic pigment that has the property of absorbing the laser light.

### Claim 3 (depends on 2)

The laminate as set forth in claim 2, wherein the second layer contains carbon black.

### Claim 4 (depends on 1)

The laminate as set forth in claim 1, wherein the first layer contains a metal oxide and/or a metal.

### Claim 5 (depends on 4)

The laminate as set forth in claim 4, wherein the first layer contains titanium oxide.

### Claim 6 (depends on 1)

The laminate as set forth in claim 1, wherein the third layer further has an adhesive property.

### Claim 7 (depends on 1)

A label comprising a print portion which has been formed by irradiating a laminate as set forth in claim 1 with the laser light,
the print portion is a portion in which the base material layer is exposed when seen from a side where the first layer is located.

### Claim 8

A laminate for laser printing, comprising:
a first layer having a property of shielding against laser light;
a second layer having a property of absorbing the laser light; and
a base material layer which is optically transparent,
the first layer, the second layer, and the base material layer being stacked in the order named,
the second layer containing a resin composition that contains a resin and a pigment that has a property of absorbing the laser light,
the resin containing a resin component that has a structure of a reaction product of an acrylic resin, a polycaprolactone polyol, and a polyisocyanate.

### Claim 9 (depends on 8)

The laminate as set forth in claim 8, wherein the resin contains structural unit of the polycaprolactone polyol in an amount of not less than 40 parts by mass and not more than 200 parts by mass with respect to 100 parts by mass of the acrylic resin.

### Claim 10 (depends on 8)

The laminate as set forth in claim 8, wherein the polycaprolactone polyol has a number-average molecular weight of not less than 1000 and not more than 4000.

### Claim 11 (depends on 8)

The laminate as set forth in claim 8, wherein the polycaprolactone polyol has a hydroxyl value of not less than 50 mgKOH/g and not more than 200 mgKOH/g.

### Claim 12 (depends on 8)

The laminate as set forth in claim 8, wherein the acrylic resin has a glass transition temperature of not lower than 30° C. and not higher than 100° C.

### Claim 13 (depends on 8)

The laminate as set forth in claim 8, wherein:
the pigment is carbon black; and
an amount of the pigment contained in the resin composition is not less than 4 mass % and not more than 17 mass % with respect to a total amount of the resin.

### Claim 14 (depends on 8)

The laminate as set forth in claim 8, wherein the resin component contains not less than 0.5 equivalents and not more than 2.0 equivalents of isocyanate groups with respect to hydroxyl groups and carboxyl groups contained in the acrylic resin and the polycaprolactone polyol.

### Claim 15 (depends on 8)

The laminate as set forth in claim 8, wherein the base material layer contains an ester-based resin.

### Claim 16 (depends on 15)

The laminate as set forth in claim 15, wherein the ester-based resin is an aromatic ester-based resin.

### Claim 17 (depends on 16)

The laminate as set forth in claim 16, wherein the aromatic ester-based resin is polyethylene terephthalate.