Strengthened thermoplastic
AssigneeNien Made Enterprise Co., Ltd.
InventorGordon King
Life of this patent
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Abstract
A thermoplastic article, and the method for making the same. The article is formed of a closed cell foam thermoplastic or substantially solid thermoplastic strengthened with diatomaceous earth having less than about two percent moisture.
Claims49
An extruded article comprising a closed cell foam of a first thermoplastic, containing between about 1% and 40% of powdered diatomaceous earth by weight, the extruded article being formed with diatomaceous earth containing no more than about 2% by weight of moisture.
A method for preparing a thermoplastic product comprising the steps of:
- (a) mixing a first thermoplastic material with powdered diatomaceous earth, so that the diatomaceous earth content is between about 1% and about 40% by weight;
- and said diatomaceous earth containing no more than about 2% by weight of moisture
- (b) extruding the resulting mixture to form a thermoplastic closed cell foam with at least a 50% volume expansion of the thermoplastic, to form the product.
An extruded substantially solid article comprising a first thermoplastic, containing between about 1% and 7% of powdered diatomaceous earth by weight, the article being formed with diatomaceous earth containing no more than about 2% by weight of moisture.
A method for preparing a thermoplastic product comprising the steps of:
- (a) mixing a first thermoplastic material with a powdered diatomaceous earth so that the diatomaceous earth content is between about 1% and about 70% by weight, and wherein the diatomaceous earth has less than 2% by weight of moisture;
- and
- (b) extruding the resulting mixture to form a substantially solid product.
Dependencies are inferred from the claim text.