Process for the production of TPE foam profiles for the building and automotive industries
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United States of America Patent
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Oct 22, 1996
Grant Date -
N/A
app pub date -
Jan 18, 1995
filing date -
Jan 19, 1994
priority date (Note) -
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Abstract
In a process and apparatus for producing TPE foam profiles, material is heated up in a conveying zone at a temperature of 180.degree.-210.degree. C. and a pressure of 100-200 bar. The melt then passes through a two-stage shear process consisting of two spaced shearing sections separated by a homogenizing section in which the melt and water are intimately mixed, with the melt being exposed to a further homogenizing section in which the melt is intensively mixed and homogenized prior to being extruded through a profile die.
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