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BARMEN MASCHINENFABRIK AG
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BARMEN MASCHINENFABRIK AG
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Application filed by BARMEN MASCHINENFABRIK AGfiledCriticalBARMEN MASCHINENFABRIK AG
Publication of ES294643A1publicationCriticalpatent/ES294643A1/en
An extruded screw press for continuous work, consisting of a heatable extruder cylinder with feed opening for the material to be processed, as well as a rotating endless screw with different thread depths that decrease in the transport direction , intended for synthetic materials thermoplastics of extremely small apparent weight, especially residual products, characterized in that the outer diameter of the worm is reduced, in the loading and entry area, at least a third of its initial size, being the decrease in the outside diameter of the worm by each turn thereof in the entrance area, equal at least to half the length of the thread pitch of the worm, keeping in the area of fusion approximately constant this reduction reduced of the diameter, while, on the contrary, the core of the worm has a full diameter equal or approximately equal meter, and in that the wall of the box surrounding the worm in the part of the entrance zone, has a shape such or is arranged in such a way that a high friction value is generated therein , effect that can be achieved, for example, by means of a longitudinal grooving of the inner wall of the shell adapted to the shape of the worm, and/or by heating thereof. (Machine-translation by Google Translate, not legally binding)
ES0294643A1962-12-201963-12-19Screw extrusion press for continuous work (Machine-translation by Google Translate, not legally binding)
ExpiredES294643A1
(en)
Improvements in spindle extruders for the transformation of synthetic thermoplastic materials. (Machine-translation by Google Translate, not legally binding)