Process for sealing glass containers, glass containers and coating material
AssigneeToyo Glass Co., Ltd.
InventorsNoriyuki Fujita, Yasuhiro Gogun
Life of this patent
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Abstract
The top of an opening of a glass container is hot end coated, and then is coated with a coating agent of an aqueous solution containing casein and polyphenol and one or more members selected from copper sulfates, calcium hydroxides, and ferric chlorides. Thereafter, a sealing material, to which a thermoplastic resin is applied, is adhered to the top of the opening of the glass container, whereby the water resistance of the sealing of the glass container becomes excellent irrespective of weathering of glass.
Claims10
A glass container sealing method, comprising:
- hot end coating the top of an opening of a glass container;
- coating the top of the opening of the glass container with a coating agent of an aqueous solution containing casein and polyphenol and one or more members selected from the group consisting of copper sulfates, calcium hydroxides, and ferric chlorides;
- and
- adhering a sealing material, to which a thermoplastic resin is applied, to the top of the opening of the glass container.
A glass container sealing method, comprising:
- hot end coating the top of an opening of the glass container;
- coating the top of the opening of the glass container with a coating agent of an aqueous solution containing 5.0 to 0.05 wt % of casein, 1.0 to 0.01 wt % of polyphenol, and 0.1 to 0.005 wt % of calcium hydroxide;
- and
- adhering a sealing material, to which a thermoplastic resin is applied, to the top of the opening of the glass container.
A coating agent, which is an aqueous solution containing casein and polyphenol and one or more members selected from the group consisting of copper sulfates, calcium hydroxides, and ferric chlorides.
A coating agent, which is an aqueous solution containing 5.0 to 0.05 wt % of casein, 1.0 to 0.01 wt % of polyphenol, and 0.1 to 0.005 wt % of calcium hydroxide.
Dependencies are inferred from the claim text.