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US 12,358,190 B1Granted
Process to yield foam construction boards with low surface irregularities
AssigneeHolcim Technology Ltd
InventorsJohn B. Letts, Chunhua Yao, Mark Holtman
Life of this patent
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Abstract
A method for producing a foam board laminate having low surface irregularities, the method comprising (i) preparing a continuous foam laminate; (ii) cutting the foam laminate to a desired length; (iii) placing the foam laminate of desired length into restriction to restrict further expansion of the foam laminate in the thickness of the foam laminate.
Claims18
A method for producing a foam board laminate having low surface irregularities, the method comprising:
- (i) preparing a continuous foam laminate;
- (ii) cutting the foam laminate to a desired length to thereby form a foam board laminate, said foam board laminate having a length and thickness;
- (iii) placing the foam board laminate between a pair of opposing parallel plates to restrict further expansion of the foam laminate relative to the thickness of the foam board laminate.
A method for producing a foam board having low surface irregularities, the method comprising:
- (i) mixing an A-side stream and a B-side stream to thereby form a foam mixture;
- (ii) depositing the foam mixture onto a production line;
- (iii) allowing the foam mixture to expand for at least 20 seconds to thereby obtain an intermediate foam product;
- (iv) cross-cutting the intermediate foam product to thereby obtain a foam board;
- and
- (v) restricting the foam board between a pair of opposing parallel plates from further expansion in at least one direction.
3 more elements
Dependencies are inferred from the claim text.