| 摘要 |
<p>PURPOSE:To rapidly release a coating film without generating environmental pollution, to obtain a high-grade regenerated resin and to easily reutilize ethanol by putting a resin molded product having a coating film in a container storing ethanol heated to its b.p. or lower in a hermetically closed state to release the coating film. CONSTITUTION:A resin molded product having a coating film is put in a container 2 storing ethanol heated to its b.p. or lower in a hermetically closed state to swell the coating film applied to the resin molded product and the volume of the whole of the coating film is increased to generate stress at the interface with the resin molded product hard to generate a volumetric change and the coating film can be perfectly and rapidly released by this stress without applying strong external force. Therefore, the resin molded product having the coating film can be treated at a high speed in large quantities and the deterioration of the regenerated resin molded product is also reduced. Since the release of the coating film is achieved by swelling, the mixing of foreign matter with ethanol due to dissolution is reduced.</p> |
