METHOD FOR MANUFACTURING MOLDED FOAM
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United States of America Patent
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Issued Date -
Jun 2, 2011
app pub date -
Nov 30, 2010
filing date -
Nov 30, 2009
priority date (Note) -
Abandoned
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Abstract
A method for manufacturing molded foam which uses cheap materials, is light in weight and which is excellent in impact resistance. In the method for manufacturing molded foam, propylene homopolymer with a long chain branch, propylene ethylene block copolymer and low density polyethylene are mixed in the base resin at a prescribed mixing ratio. A blowing agent is added to carry outfoaming. A prescribed mixing ratio is determined based on the value arrived at by a multiplying melt tension of each material mixed with the melt flow rate and the Tensile Rupture Elongation.
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