METHOD AND DEVICE FOR REMOVING COATING ON COATED PLASTIC ARTICLE
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United States of America Patent
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Jul 30, 2020
app pub date -
Apr 15, 2020
filing date -
Oct 20, 2017
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Abstract
A method and a device for removing a coating on a coated plastic article allow highly efficient removal of a coating from a coated plastic article and recovery of a base after coating removal and a remover. A method for removing a coating on a coated plastic article with a remover includes shredding the article into pieces, immersing the pieces in the remover heated to a second temperature, heating the remover to a first temperature, and stirring the pieces with the heated remover. The remover includes at least one monohydric lower alcohol selected from methanol, ethanol, propanol, and 1-butanol, and swells the base, the coating, or both. The first temperature is not lower than 25° C. and not higher than a temperature 10° C. lower than a boiling point of the remover. The second temperature is not higher than an upper limit of the first temperature.
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