Method of producing composite boards or laminates
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United States of America Patent
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-
Mar 15, 1988
Grant Date -
N/A
app pub date -
Feb 26, 1986
filing date -
Nov 14, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for the production of laminates comprises extruding a support of acrylic nitrile-butadiene-styrene (ABS) and a coating of polymethyl methacrylate (PMMA, acrylic glass) through a sheet die. The acrylic glass forming the coating has a melt flow index of at most 2.0 (MFI 230.degree. C./3.8 according to DIN 53735) and the ABS forming the support are conducted directly to the die through different channels.
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