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Process for sealing glass containers, glass containers and coating material

A technology for glass containers and coating agents, applied in the field of coating agents, can solve problems such as insufficient technology and achieve the effect of excellent water resistance

Inactive Publication Date: 2010-08-11
TOYO GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The above-mentioned prior arts are all techniques for improving the sealing strength or ensuring sufficient sealing strength even when the glass is weathered, but these technologies are not sufficient from the viewpoint of the water resistance of the sealing.

Method used

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  • Process for sealing glass containers, glass containers and coating material
  • Process for sealing glass containers, glass containers and coating material
  • Process for sealing glass containers, glass containers and coating material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] [Example 1 and corresponding comparative example]

[0074] The following coating agents were applied to produce Example 1 and Comparative Examples 1-2 to 1-4 (coating was not performed in Comparative Example 1-1).

[0075] Embodiment 1: the aqueous solution of casein (0.25wt%), tannic acid (0.05wt%), copper sulfate (0.05wt%), ammoniacal liquor (0.125vol%)

Embodiment 2

[0083] [Example 2 and corresponding comparative example]

[0084] The following coating agents were applied to produce Example 2 and Comparative Examples 2-2 to 2-4 (coating was not performed in Comparative Example 2-1).

[0085] Embodiment 2: the aqueous solution of casein (0.25wt%), tannic acid (0.05wt%), calcium hydroxide (0.025wt%), ammoniacal liquor (0.025vol%)

Embodiment 3

[0093] [Example 3 and corresponding comparative example]

[0094] The following coating agents were applied to produce Example 3 and Comparative Examples 3-2 to 3-4 (coating was not performed in Comparative Example 3-1).

[0095] Embodiment 3: the aqueous solution of casein (0.25wt%), tannic acid (0.05wt%), ferric chloride (0.075wt%), ammoniacal liquor (0.025vol%)

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Abstract

The invention realizes water-resistant sealing of a glass container (1) independent of the weathering of glass. Water-resistant sealing of a glass container (1) independent of the weathering of glass can be attained by subjecting the top surface of the mouth of a glass container (1) to hot end coating, applying a coating material consisting of an aqueous solution which contains casein, a polyphenol and at least one member selected from among copper sulfate, calcium hydroxide and iron chloride to the resulting top surface, and then bonding a seal (2) coated with a thermoplastic resin to the top surface.

Description

technical field [0001] The present invention relates to a glass container sealing method capable of achieving excellent water resistance regardless of weathering of the glass when a sheet-shaped sealing material is attached to the mouth of the glass container to seal the contents, and oversealing by this method glass containers, and the coating agent used in this method. Background technique [0002] Conventionally, a method of sealing a glass container is known in which a cap with a built-in sealing material (a material obtained by laminating an adhesive layer of a thermoplastic synthetic resin film on the lower surface of an aluminum foil, etc.) is attached to the mouth of a glass container and subjected to high-frequency High-frequency heat sealing in which a synthetic resin film of the sealing material is welded to the top surface of the mouth and sealed by heating; and a sealing material (material having an adhesive layer of a thermoplastic synthetic resin film on the b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D53/00C03C17/34C09D7/12C09D189/00C09J5/02C09D7/61
CPCC09D199/00B65D13/02C08K3/20C08K3/30C03C17/28B65D51/20C09D189/005C03C17/003C09D7/1216C03C17/3405C08K3/16B67B5/05C08K3/22C08K5/13C09D7/61Y10T428/131Y10T428/1321
Inventor 藤田则行五郡靖弘
Owner TOYO GLASS CO LTD
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