Method of production of expansion-molded article, from foamable thermoplastic resin particles and apparatus therefor
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United States of America Patent
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Apr 18, 1989
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N/A
app pub date -
Jul 23, 1987
filing date -
Feb 21, 1985
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Expired
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Abstract
This invention relates to a method and apparatus for improving not only the quality of the production of molded foamable thermoplastic resin particles converted into fusion-bonded materials but also the output by protecting the resin from atmospheric pressure by pressurizing the particles and heating the particles to soften the same.
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