Microstructure-bearing composite plastic articles and method of making
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United States of America Patent
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Dec 29, 1992
Issued Date -
N/A
app pub date -
Dec 8, 1989
filing date -
Feb 10, 1989
priority date (Note) -
Expired
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Abstract
A microstructure-bearing composite plastic article can be superior, both in microstructure and in physical properties, when it is a composite of a tough, flexible substrate, at a surface of which is microstructure formed of a cured oligomeric resin having hard segments and soft segments, which cured resin is substantially confined to the microstructure portion of the composite. Such a composite plastic article can be made by depositing an uncured oligomeric resin composition onto a master negative molding surface in an amount barely sufficient to fill the cavities of the master, filling the cavities by moving a bead of the composition between a substrate and the master, and curing the deposited composition by ultraviolet radiation while keeping the temperature during curing to not more than 50.degree. C. above the typical use temperature of the finished composite plastic article.
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