# US 2024/0203293 A1 · Laser-printed in-mold label

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2024/0203293 A1
- Document ID: US20240203293A1
- Status: Published application
- Kind: A1
- Application number: 18/287,246
- Filed: 2022-03-16
- Published: 2024-06-20
- Earliest claimed: 2021-04-23
- Assignees: Toyobo Co., Ltd.
- Applicants: Toyobo Co., Ltd.
- Inventors: Shintaro ISHIMARU; Masayuki HARUTA
- Web page: https://patentgrep.com/patent/US20240203293A1

## CPC

- G09F 3/02: Forms or constructions (layered products B32B)
- G09F 3/04: to be fastened or secured by the material of the label itself, e.g. by thermo-adhesion (by a separate adhesive layer G09F3/10)
- G09F 2003/0201: {Label sheets intended to be introduced in a printer, e.g. laser printer}
- G09F 2003/0225: {Carrier web}
- G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS

## Abstract

Provided is an in-mold label capable of recognizing the content thereof even when a display size is reduced as a container is downsized. The in-mold label comprises at least one laser-printed layer capable of being printed by laser irradiation. The laser-printed layer includes a laser-printed portion and a non-printed portion, and an absolute value of a difference between color L* values of the printed portion and the non-printed portion is 1.0 or more and 10.0 or less.

## Claims

### Claim 1

An in-mold label comprising at least one laser-printed layer capable of being printed by laser irradiation, wherein the laser-printed layer includes a laser-printed portion and a non-printed portion, and an absolute value of a difference between color L* values of the printed portion and the non-printed portion is 1.0 or more and 10.0 or less.

### Claim 2 (depends on 1)

The in-mold label according to claim 1, wherein at least one of bismuth, gadolinium, neodymium, titanium, antimony, tin, and aluminum as a simple substance or an oxide is contained as a metal capable of being printed by laser irradiation.

### Claim 3 (depends on 1)

The in-mold label according to claim 1, wherein a thickness of the laser-printed layer is 5 μm or more and 200 μm or less.

### Claim 4 (depends on 1)

The in-mold label according to claim 1, wherein either a height or a width of a print size in the printed portion is 0.2 mm or more and 100 mm or less.

### Claim 5 (depends on 1)

The in-mold label according to claim 1, wherein a resin constituting the laser-printed layer is mainly any one of polyester, polypropylene, polyethylene, and polystyrene.

### Claim 6 (depends on 1)

The in-mold label according to claim 1, wherein the in-mold label is bonded to a container, and has bonding strength with the container of 2 N/15 mm or more and 20 N/15 mm or less.

### Claim 7 (depends on 6)

A container with in-mold label, wherein the in-mold label according to claim 6 is bonded to the container.