Composite material surface for handling hot glass

• US 4,360,563 A
• Filed: 10/20/1980
• Issued: 11/23/1982
• Est. Priority Date: 05/21/1979
• Status: Expired due to Term

• Current Assignee: Owens-Illinois Incorporated (O-I Glass, Inc.)
• Original Assignee: Owens-Illinois Incorporated (O-I Glass, Inc.)
• Inventors: Stengle, Edward J.
• Primary Examiner(s): Lawrence, Evan K.
• Application Number:
  US06/198,373
• Time in Patent Office: 764 Days
• Field of Search: 65/26, 65/169, 65/304, 428/323, 428/447, 427/202, 427/203
• US Class Current: 428/323
• CPC Class Codes: C03B 40/02 by lubrication; Use of materials as release or lubricating compositions
• CPC Class Codes: C03B 7/16 using deflector chutes
• CPC Class Codes: Y10T 428/25 Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
• CPC Class Codes: Y10T 428/31663 As siloxane, silicone or silane

Abstract

An improved composite material provides surfaces for handling hot glass charges and newly-formed glass articles without detrimental marring or marking of the same. The surface is formed on a relatively smooth metallic substrate by applying a primer coating of a first silicone resin to the substrate, applying a solventless second silicone resin binder coating over the primer, depositing a layer of granular heat-resistant carbonaceous material over the binder and allowing the binder to embed the carbonaceous material, and heat-curing the binder to provide a lubricated durable wear-resistant surface for handling hot glass charges or gobs as well as newly-formed glass articles.

Claims

1. As a product by process, a composite material for handling glass charges, newly-formed hot glass articles and the like and comprising a coated metallic substrate formed by 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.

2. The product by process of claim 1 wherein a second coating of solventless curable thermosetting silicone resin binder is applied on the granular carbonaceous material and heat-cured binder and a second layer of said granular heat-resistant solid lubricant carbonaceous material is deposited over said second binder coating and embedded therein and said binder is heat-cured into thermoset further-hardened condition to permanently affix said second layer of granular carbonaceous material to the heat-cured first coating.

3. The product by process of claim 1 wherein said binder coating of solventless curable thermosetting silicone resin comprises a clear liquid methoxy functional intermediate silicone resin having an average molecular weight of about 600.

4. The product by process of claim 1 wherein said carbonaceous material comprises a particulate mixture of activated charcoal and graphite having a particle size ranging from about 10 to 100 U.S. mesh.

5. The product by process of claim 1 wherein said heat-curing step is performed at a temperature of about 500°

to 550°

F. for a period of about 11/2 hours.

6. The product by process of claim 1 wherein said carbonaceous material is selected from the group consisting of graphite, carbon, and activated charcoal.