| 摘要 |
<p>The present invention relates to a process and a device for processing plastic waste, such as packaging foil of polyvinylchloride, polyethylene, polypropylene etc. into blocks by compressing it in a container. Said compressing of the plastic waste is achieved by means of a punch at a temperature of 120 - 180.degree.C and a pressure of 250 - 400 g/cm2 and preferably at a temperature of 140 - 160.degree.C and a pressure of 260 - 290 g/cm2, followed by cooling with air. The cooling is carried out by the introduction of air in the container by means of a fan, which cooling takes place in 5 - 15 minutes, and preferably 8 - 10 minutes. The device of the invention is provided with a punch, whereas the inner surfaces of said container and/or said punch are provided with a coating in order to prevent said softened and compressed plastic waste from adhering to the walls. Said coating is preferably teflon, whereas the heating elements advantageously are electrical heating elements.</p> |
