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US 6,284,186 B1Granted
Method for using recycled glass as a filler and reinforcement in molded plastics
AssigneeR & J Hansen, L.L.C.
InventorRichard W. Hansen
Life of this patent
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Abstract
The use of comminuted, recycled glass powders as a filler in molded plastic parts is disclosed. The recycled glass powder has non-uniform, rounded edges and is free from contaminants such as grinding compounds, metals, inorganic, and organic waste materials. The recycled glass powder filler can be used with a variety of different thermoplastics and thermosetting plastics commonly used to in injection molding and blow molding of plastic parts.
Claims17
A method for using recycled glass powder as a filler in molded plastic parts comprising:
- obtaining a quantity of uncontaminated, comminuted, recycled glass powder filler having non-uniform, rounded edges which has been comminuted without the use of grinding compounds, wherein the glass powder has a size less than about 20 mesh;
- combining the comminuted glass powder filler with a quantity of plastic resin;
- and
- molding a plastic part with the plastic resin and the comminuted glass powder filler, wherein the plastic part comprises up to 80% by weight comminuted glass powder filler, wherein said molding step is selected from injection molding, extrusion molding and blow molding.
1 more element
Dependencies are inferred from the claim text.