Lubricity coating for plastic coated glass articles
AssigneeAnchor Hocking Corporation
InventorsFrancis J. Shonebarger, William Brown
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Abstract
A lubricity coating for glass articles which have previously been coated with an ionic copolymer of an alpha olefin and an alpha, beta-ethylenically unsaturated carboxylic acid. The preferred lubricity coating comprises calcium stearate and polyvinyl alcohol emulsified by an alkaline salt of oleic acid. The coating may be applied to the plastic coated articles as a water spray and can be dried by retained heat of the article. The coating is resistant to removal by water.
Claims10
A lubricity coating material in water emulsion form and having a solids content consisting essentially of,
- 1 part by weight of a member of the group of salts consisting of calcium stearate, zinc stearate, calcium oleate, zinc oleate, and mixtures thereof,
- about 0.5 to 2 parts of a soluble polyvinyl alcohol,
- and about 1.7-3.6 parts of an oleate of the class consisting of potassium, sodium, and ammonium oleates, and mixtures thereof.
A water emulsion comprising,
- 1 part by weight of a salt of the group consisting of calcium stearate, zinc stearate, calcium oleate, zinc oleate, and mixtures thereof;
- about 0.5 to 2 parts of a soluble polyvinyl alcohol,
- about 1.5 to 3 parts of oleic acid,
- and about 0.3 to 0.8 part of a hydroxide of the group consisting of potassium, sodium, and ammonium hydroxides, and mixtures thereof.
Dependencies are inferred from the claim text.