| 摘要 |
<p>Method of recycling objects composed of thermoplastic polymers, partic. PET, comprises several prepn. phases of the thermoplastic to transform it into a prod. based on chippings free of pollutant agents, elimination of any aq. microparticles and the exposure of the chippings to dehydration at a temp. of optimal fluidisation to form a homogeneous prod., deaeration of fluidised prod., extrusion after dehydrated and deaerated prod., and cooling at a predetermined temp. to obtain optimal crystallinity. Also claimed is a recycling installation of a thermal treatment stage and a thermoplastic polymer extruder with a screw profile designed to give deaeration in the melt.</p> |
