Laminate, and packaging body or container

Patent metadata

Field	Value
Publication number	US-2024017896-A1
Application number	US-202118037683-A
Country	US
Kind code	A1
Filing date	Nov 26, 2021
Priority date	Dec 11, 2020
Publication date	Jan 18, 2024
Grant date	—

Abstract

A laminate ( 10 ) includes a substrate ( 11 ), a sealing layer ( 12 A) disposed on a surface of the substrate ( 11 ), and a coating layer ( 13 ) disposed on a surface of the substrate ( 11 ) opposite to the sealing layer ( 12 A). The coating layer ( 13 ) contains a tannic acid derivative in which at least a part of a plurality of hydroxyl groups is substituted with a linear hydrocarbon group having 1 to 18 carbon atoms, and at least one type of resin selected from the group consisting of a urethane resin, an acrylic resin, a vinyl chloride-vinyl acetate copolymer resin, a polyester resin, and an olefin resin.

First claim

1 . A laminate comprising:
a substrate; a sealing layer disposed on a surface of the substrate; and a coating layer disposed on a surface of the substrate opposite to the sealing layer, wherein the coating layer contains
a tannic acid derivative in which at least a part of a plurality of hydroxyl groups is substituted with a linear hydrocarbon group having 1 to 18 carbon atoms, and
at least one type of resin selected from the group consisting of a urethane resin, an acrylic resin, a vinyl chloride-vinyl acetate copolymer resin, a polyester resin, and an olefin resin.

2 . The laminate according to claim 1 , wherein the coating layer is formed of an organic binder containing the tannic acid derivative and the resin.

3 . The laminate according to claim 1 , wherein the coating layer constitutes a decorative layer.

4 . The laminate according to claim 3 , wherein the decorative layer is formed of a printing layer containing a printing ink.

5 . The laminate according to claim 3 , wherein the coating layer is a layer coated with a sealing coating agent.

6 . The laminate according to claim 1 , wherein the sealing layer contains a tannic acid derivative in which at least a part of a plurality of hydroxyl groups is substituted with a linear hydrocarbon group having 1 to 18 carbon atoms.

7 . The laminate according to claim 6 , wherein the sealing layer is formed of an organic binder containing the tannic acid derivative and the resin.

8 . A packaging body or container comprising:
a container body; and one or more laminates according to claim 1 attached to the container body.

9 . The packaging body or container according to claim 8 , wherein the laminates constitute a lid member of the container body.

10 . The packaging body or container according to claim 8 , wherein the laminates are attached to an outer surface of the container body.

11 . A packaging body or container comprising:
an outer package formed by bonding one or more laminates according to claim 1 ; and a compartment disposed inside the outer package.

Assignees

• Nat Inst Materials Science
• Dainippon Ink & Chemicals

Inventors

• Naito Masanobu
• Ohara Shin-Ichi
• Tamaoka Takashi
• Iwanami Hideoki

Classifications

• C09D5/00

  Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced {(electrically insulating plastics, resins or waxes H01B3/30)}; Filling pastes · CPC title

• B65D65/40 Primary

  Applications of laminates for particular packaging purposes {(B65D1/0215, B65D1/28, B65D3/22, B65D5/0281, B65D5/563, B65D9/30, B65D29/02, B65D31/02, B65D75/26, B65D77/2024, B65D81/1275, B65D81/3811, B65D81/3823, B65D81/3834, B65D81/3846, B65D81/3858, B65D81/3874, B65D81/3886, B65D81/3897 take precedence; laminates per se or laminated packages characterised by the composition or)} · CPC title

• B65D81/28 Primary

  Applications of food preservatives, fungicides, pesticides or animal repellants · CPC title

• C09D7/63

  organic · CPC title

• C09J7/30

  characterised by the adhesive composition · CPC title