| 摘要 |
Process for the extrusion of polymers with a high percentage of inert materials; being meant with such an expression percentages from 35-40 % by weight to 70-80 % by weight on the total, including the stages of: feeding of precisely measured amounts of the components and the additives in axially distanced points of a screw mixer; intimate mixing of said components and their extrusion through the extrusion head of said mixer. Said process is carried out through a device including an extruder (1) for the transformation of a mixture consisting of at least one polymer, an inert material and one or more additives such as lubricants, stabilizers or else, means (2, 3, 4) (2, 3, 4) for the ensiling of each of said mixture components, devices (21, 31, 41) for the continuous weighing of each of said components and means (6, 8, 9) for the feeding of said components. Such feeding means (6, 8, 9) are positioned in prearranged points along the extruder (1) according to the composition of the mixture to be transformed.
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