Package containing fluid content

Patent metadata

Field	Value
Publication number	US-10889409-B2
Application number	US-201615755647-A
Country	US
Kind code	B2
Filing date	Aug 30, 2016
Priority date	Sep 30, 2015
Publication date	Jan 12, 2021
Grant date	Jan 12, 2021

Abstract

A package including a container body (1) containing a fluid content (3) with leaving a head space (7), wherein the container body (1) has an inner surface (1a) on which ruggedness is formed entirely, the inner surface (1a) with the ruggedness of the container body (1) is coated with a lubricating liquid (30) immiscible with the fluid content (3), and the lubricating liquid (30) is present as a coating layer interposed between the inner surface (1a) and the fluid content (3), and the lubricating liquid (30) for forming the coating layer forms a liquid pool (31) at a periphery of an upper end face of the fluid content (3) contained in the container body (1) in a state of being held upright.

First claim

The invention claimed is:

1. A package including a container body containing a fluid content leaving a head space, wherein
the container body has an inner surface on which ruggedness is formed entirely,
the inner surface with the ruggedness of the container body is coated with a lubricating liquid immiscible with the fluid content, and the lubricating liquid is present as a coating layer interposed between the inner surface and the fluid content,
the lubricating liquid for forming the coating layer forms a liquid pool at a periphery of an upper end face of the fluid content contained in the container body in a state of being held upright, and
wherein in an upright state, an excess amount of the lubricating liquid flows down from the head space onto the periphery of the upper end face of the content so as to form a liquid pool with a bottom face on the upper end face of the content.

2. The package according to claim 1 , wherein the ruggedness is formed as fine protrusions having a height of not less than 0.7 μm, and the fine protrusions have a pitch greater than the height.

3. The package according to claim 1 , wherein the inner surface of the container body is formed of a thermoplastic resin layer where fine particles having an average particle diameter of not more than 40 μm are dispersed as a surface roughening agent.

4. The package according to claim 1 , wherein the fluid content is a viscous substance having a viscosity of not less than 100 mPa·s at 25° C.

Assignees

• Toyo Seikan Group Holdings Ltd
• Toyo Seikan Kaisha Ltd

Inventors

• Akutsu Yosuke
• Okamoto Kota
• Seito Shinya
• NYUU Keisuke
• Miyazaki Tomoyuki

Classifications

• B65D1/0207

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

• B65D23/02 Primary

  Linings or internal coatings · CPC title

• B65D85/72 Primary

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

• B65D1/0215

  multilayered (B65D81/3837 takes precedence) · 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