NON-PVC TYPE CALENDERED POLYOLEFIN SHEET AND THE PROCESS THEREOF
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United States of America Patent
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Issued Date -
Sep 15, 2011
app pub date -
Mar 12, 2010
filing date -
Mar 12, 2010
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Abstract
The present invention relates to a non-PVC type calendered polyolefin sheet and the preparation process thereof, characterized in that a polyolefin material composition which is different from polyvinyl chloride (PVC) is processed by the calendering process to produce polyolefin plastic sheets; the process includes that first of all raw materials are evenly blended in a mixer, homogeneously melt-mixed in Banbury mixer, then fully gelled in a roll mill, thereafter calendered in a calender into the sheet which can be pattern-embossed with a set of embossing rolls if necessary, finally the sheet product is cooled down to fix the pattern.
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