Sign up Process for introducing an additive into a polymer melt
United States Patent 7993560 A process includes introducing a
base polymer into an extruder, heating to a temperature
sufficient to form a polymer melt, introducing a liquid such as
water including an additive with mixing and subsequent
vaporization and venting of the liquid to produce an extrudate
having a uniform distribution of preferably uniformly small
additive particles.  Nelson, Kevin Philip (Appleton, WI, US)
Siegel, Dan G. (Belleville, IL, US) Application Number:
Publication Date: Filing Date: Curwood, Inc. (Oshkosh, WI, US)
Primary Class: Other Classes: 264/211, 264/510, 426/129,
428/35.9 International Classes: B29C47/76; B32B37/00; C09B67/00
Field of Search: 264/510, 264/211, 264/176.1, 428/35.9, 426/129
View Patent Images: US Patent References: 7867531Myoglobin
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package with barrier propertiesFebruary, 2010Sha