Container having excellent slipping property for fluid contents

Patent metadata

Field	Value
Publication number	US-10556741-B2
Application number	US-201816212577-A
Country	US
Kind code	B2
Filing date	Dec 6, 2018
Priority date	Feb 8, 2013
Publication date	Feb 11, 2020
Grant date	Feb 11, 2020

Abstract

A container for containing fluid substance as a content, wherein a container surface that comes in contact with the content is formed of a resin composition that contains a forming-resin and an immiscible-liquid that is immiscible with the fluid substance. The container has markedly improved slipping property for the fluid contents and can be easily produced.

First claim

The invention claimed is:

1. A container for containing fluid substance as a content, wherein:
said container has a multilayered structure that includes, as an intermediate layer, a gas-barrier layer formed of an ethylene/vinyl alcohol copolymer;
an inner surface of said container that comes in contact with said fluid substance is formed of a resin composition that contains a resin for forming and a lubricating liquid that is immiscible with said fluid substance and works to improve the slipping property to said fluid substance;
said resin composition contains said lubricating liquid in an amount of not less than 5% by mass; and
the inner surface of said container is covered with, the lubricating liquid at a ratio F represented by the following formula (1),
F= (cos θ−cos θ B )/(cos θ A −cos θ B )  (1)

wherein θ is a water contact angle on the inner surface of the container formed by said resin composition,
θ A is a water contact angle on said lubricating liquid, and
θ B is a water contact angle on said resin for forming, of not less than 0.46.

Assignees

• Toyo Seikan Group Holdings Ltd

Inventors

• Akutsu Yosuke
• Iwamoto Shinya

Classifications

• B65D85/72 Primary

  for edible or potable liquids, semiliquids, or plastic or pasty materials · CPC title

• B65D1/0215 Primary

  multilayered (B65D81/3837 takes precedence) · CPC title

• B65D65/42

  Applications of coated or impregnated materials · CPC title

• C08J7/065

  Low-molecular-weight organic substances, e.g. absorption of additives in the surface of the article · CPC title

• B65D23/02

  Linings or internal coatings · CPC title