| 摘要 |
<p>PURPOSE:To recycle a container by coating required parts of the container made of a plastic stable to alkali and/or acid with a polymer soluble in alkali and/or acid, removing the coating polymer after use and repeating the coating with the soluble polymer. CONSTITUTION:On required parts of a container body made of a plastic (e.g. polyvinylidene chloride) stable to alkali and/or acid, a coating layer composed of a polymer (e.g. polyethylene or polyvinyl chloride) soluble in a strong alkali and/or a strong acid is formed. The above-mentioned container is collected after use and only the coating layer thereof is removed by washing the container using a strong alkali or a strong acid. A coating layer is then formed again, thus recycling the container.</p> |
