Coating composition for forming a lubricating layer that exhibits improved sliding property to fluid substances

Patent metadata

Field	Value
Publication number	US-10131804-B2
Application number	US-201515320124-A
Country	US
Kind code	B2
Filing date	Jun 18, 2015
Priority date	Jun 20, 2014
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

A coating composition for forming a lubricating layer ( 3 ) on the surface of a base material ( 1 ) formed in a predetermined shape so as to exhibit improved sliding property to fluid substances, the coating composition containing, as a dispersion medium, a liquid ( 5 ) that is a component constituting the lubricating layer ( 3 ), and the dispersion medium containing solid particles ( 7 ) dispersed therein as a component constituting the lubricating layer ( 3 ). The lubricating layer ( 3 ) formed by using the coating composition exhibits more improved sliding property to fluid substances. The coating composition, therefore, can be favorably used for forming the lubricating layer ( 3 ) on the inner surfaces of the packing materials such as containers and lids.

First claim

The invention claimed is:

1. A coating composition for forming a lubricating layer on an inner surface of a container so as to impart improved sliding properties between a content of the container and said inner surface, the coating composition consisting of an edible oil as a dispersion medium and solid particles dispersed in the edible oil, and said edible oil having an angle of contact (20° C.) of not more than 45° relative to the inner surface of the container and a viscosity (25° C.) of not more than 100 mP·s, and said solid particles being formed of a rice wax or a cellulose having a melting point of not lower than 40° C. and having a particle size of 5 to 300μm.

2. The coating composition according to claim 1 , wherein the solid particles are dispersed in an amount of 0.01 to 20 parts by mass per 100 parts by mass of the dispersion medium.

3. A method of forming a lubricating layer on an inner surface of a container comprising a base material so as to impart improved sliding property to fluid substances by spraying the coating composition of claim 1 onto the inner surface of the container in an amount of 1.0 to 6.2 mg/cm 2 .

4. The method according to claim 3 , wherein the inner surface of the container comprises a packing material for containing fluid substances, and the coating composition is sprayed onto the inner surface of the container with which the fluid substance comes in contact.

5. A structure having a lubricating layer formed on an inner surface of a container by applying the coating composition of claim 1 thereon so as to impart improved sliding property to fluid substances, the lubricating layer being formed of the edible oil and solid particles.

Assignees

• Toyo Seikan Kaisha Ltd

Inventors

• Okada Yoshiaki
• Miyazaki Tomoyuki
• NYUU Keisuke

Classifications

• C10N2050/02

  dissolved or suspended in a carrier which subsequently evaporates to leave a lubricant coating · CPC title

• B65D2231/00

  Means for facilitating the complete expelling of the contents · CPC title

• B65D2231/005

  the container being rigid · CPC title

• B65D1/0207

  characterised by material, e.g. composition, physical features · CPC title

• B65D1/00

  Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material (with curved or partially-curved cross-section made by winding or bending paper B65D3/00; with polygonal cross-section formed by folding B65D5/00; specially constructed to be opened by cutting, piercing or tearing of wall portions B65D17/00; rigid pallets with side walls B65D19/02) · CPC title