Method of coating hot glass contacting surfaces
First Claim
1. The method of coating a metallic substrate for long-term use in handling hot glass charges or articles comprising the steps of thoroughly cleaning the metallic substrate, applying a primer coating of monomeric/polymeric first silicone resin to said substrate and air drying the same, applying a coating of solventless curable thermosetting second silicone resin binder over said primer coating, depositing at least one layer of granular heat-resistant solid lubricant carbonaceous material over said binder coating and allowing said binder to wet and embed said granular carbonaceous material to firmly retain the same, and heat-curing said binder into thermoset further-hardened condition to permanently affix said granular carbonaceous material to said substrate.
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Accused Products
Abstract
An improved method is provided for forming surfaces for handling hot glass charges and newly-formed glass articles without detrimental marring or marking of the same. The method comprises priming a relatively-smooth metallic substrate with a silicone resin, applying a coating of a solventless curable thermosetting silicone resin binder over the primer, depositing at least one layer of a heat-resistant granular solid lubricant carbonaceous material over the binder coating and allowing the binder to wet and embed the granular material, and heat-curing the binder to permanently affix the granular carbonaceous material to the substrate to provide a lubricated durable wear-resistant surface for handling hot glass charges or gobs as well as newly-formed glass articles.
42 Citations
9 Claims
- 1. The method of coating a metallic substrate for long-term use in handling hot glass charges or articles comprising the steps of thoroughly cleaning the metallic substrate, applying a primer coating of monomeric/polymeric first silicone resin to said substrate and air drying the same, applying a coating of solventless curable thermosetting second silicone resin binder over said primer coating, depositing at least one layer of granular heat-resistant solid lubricant carbonaceous material over said binder coating and allowing said binder to wet and embed said granular carbonaceous material to firmly retain the same, and heat-curing said binder into thermoset further-hardened condition to permanently affix said granular carbonaceous material to said substrate.
- 7. The method of coating a metallic substrate to provide a heat and abrasion-resistant surface for long-term use in repeated handling of hot glass charges or newly-formed glass articles comprising the steps of cleaning and grit blasting selected surfaces of the metallic substrate, applying an essentially-uniform coating of a monomeric/polymeric silicone resin primer over said selected surfaces of said metallic substrate, applying a binder coating consisting of a solventless curable silicone resin over said primer coating on said substrate, depositing an essentially-uniform heavy layer of heat-resistant solid lubricant carbonaceous material over said binder coating and allowing said binder coating to wet and embed said granular material, removing the excess unadhered granular material from the coating surface, and heating said binder into thermoset further-cured hardened condition to permanently affix said granular carbonaceous material to said substrate.
Specification