Coating material, printing member for dot printing, and PTP packaging body

Patent metadata

Field	Value
Publication number	US-11447653-B2
Application number	US-201716088927-A
Country	US
Kind code	B2
Filing date	Mar 24, 2017
Priority date	Mar 28, 2016
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

Abstract

The present invention provides a coating material that can improve gravure printing characteristics of the printing surface of a printing substrate to favorably transfer an ink fed in the cell of a gravure printing roll to the printing surface of the printing substrate, thereby achieving the beautiful gravure printing. The coating material of the present invention is a coating material for forming a surface layer, serving as a printing surface, on a printing substrate on which gravure printing is to be performed, and the coating material is characterized by including a vinyl chloride-vinyl acetate-unsaturated fatty acid copolymer that includes 80 to 90% by mass of a component of vinyl chloride, 9.2 to 19.5% by mass of a component of vinyl acetate, and 0.1 to 0.8% by mass of a component of an unsaturated fatty acid.

First claim

The invention claimed is:

1. A coating material for forming a surface layer serving as a printing surface on a printing substrate to which gravure printing is to be applied, the coating material comprising a vinyl chloride-vinyl acetate-unsaturated fatty acid copolymer that includes 80 to 90% by mass of a component of vinyl chloride, 9.2 to 19.5% by mass of a component of vinyl acetate, and 0.3 to 0.8% by mass of a component of an unsaturated fatty acid and/or succinic acid,
wherein the unsaturated fatty acid is at least one fatty acid selected from the group consisting of fumaric acid and itaconic acid, and
wherein the vinyl chloride-vinyl acetate-unsaturated fatty acid copolymer excludes a component of maleic acid, a component of acrylic acid and a component of methacrylic acid,
wherein the vinyl chloride-vinyl acetate-unsaturated fatty acid copolymer has a number-average molecular weight of 8,000 to 30,000.

2. The coating material according to claim 1 , wherein the vinyl chloride-vinyl acetate-unsaturated fatty acid copolymer has a molecular weight distribution (weight-average molecular weight/number-average molecular weight) of 1 to 10.

3. A printing member for dot printing by gravure printing, comprising a printing substrate; and a surface layer that is integrated by lamination on a surface of the printing substrate and includes a coating film of the coating material according to claim 1 .

4. The printing member for dot printing according to claim 3 , wherein the printing substrate is a metal foil.

5. A PTP packaging body comprising: a storage sheet including a tablet storing portion for storing a tablet; and a sealing sheet for closing an opening portion of the tablet storing portion of the storage sheet, the sealing sheet including the printing member for dot printing according to claim 3 , and a gravure printing layer formed on the surface layer of the printing member for dot printing.

Assignees

• Uacj Corp

Inventors

• Nishio Hiroshi
• Katoh Osamu
• Kitada Yukie

Classifications

• B41F13/11

  Gravure cylinders {(attaching cylindrical formes B41F27/105)} · CPC title

• B41M1/10

  Intaglio printing {; Gravure printing} · CPC title

• B65D83/04

  for dispensing annular, disc-shaped, spherical or like small articles, e.g. tablets or pills · CPC title

• C09D131/04

  Homopolymers or copolymers of vinyl acetate · CPC title

• C09D127/06 Primary

  Homopolymers or copolymers of vinyl chloride · CPC title