Leisure articles and cars prepared by multilayer rotational moulding
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United States of America Patent
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Mar 20, 2018
Issued Date -
N/A
app pub date -
Feb 3, 2015
filing date -
Apr 21, 2008
priority date (Note) -
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Abstract
Multilayer articles having reinforced structural properties are prepared by rotational molding of external and internal skin layers prepared from polyethylene resin and an intermediate layer prepared from foamed polyethylene. The composition of the external layer is fed as a dry blend into a mold, and the mold is placed in a pre-heated oven and rotated. The composition of the intermediate layer is fed as a dry blend into the mold, and the mold is placed in a pre-heated oven and rotated. The composition of the internal layer is fed as a dry blend into the mold, and the mold is placed in a pre-heated oven and rotated.
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