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US 9,038,672 B2Granted
Hollow article of variable wall structure density
AssigneeSalflex Polymers Ltd.
InventorDanny Cacciacarro
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Abstract
A molded thermoplastic article including a hollow body is provided, the article comprising a first layer, and a foamed second layer, the first layer and foamed second layer defining a wall structure, the foamed second layer having a lighter density relative to the first layer. In the wall structure, the ratio of the first layer to foamed second layer varies along the length of the article.
Claims9
A molded thermoplastic article including a hollow body, the article comprising:
- a first layer;
- a foamed second layer;
- wherein the article comprises a wall structure incorporating said first layer and said foamed second layer, said foamed second layer having a lighter density relative to said first layer, and
- wherein a ratio of a thickness of said first layer to a thickness of said foamed second layer varies along the length of said article, and
- wherein along the length of the article, the quantitative measure of said first layer and said foamed second layer provides the wall structure with a generally constant thickness along the length of the article.
2 more elements
Dependencies are inferred from the claim text.