THERMOPLASTICS ALLOYS MODIFIED WITH ELASTOMER EXTRUDING WORM

THERMOPLASTICS ALLOYS MODIFIED WITH ELASTOMER EXTRUDING WORM

Extrusion worm, for processing thermoplastic-elastomer contg. alloys and elastomer contg. thermoplastic copolymers has the following geometry to avoid fluctuation. Pumping zone represents 0.360-0.465 of the active length (La) of the worm. Compression zone represents 0.018-0.023 of La. Feeding zone a...

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Bibliographische Detailangaben
Hauptverfasser: OROS HORIA, RO, PETRARU FILIP, RO, URSACHE ANDREI, RO, SALICHI GHEORGHE, RO, MANASII GHEORGHE, RO, CRETU DANIELA, RO
Format: Patent
Sprache:eng ; rum
Schlagworte:
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
PERFORMING OPERATIONS
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:Extrusion worm, for processing thermoplastic-elastomer contg. alloys and elastomer contg. thermoplastic copolymers has the following geometry to avoid fluctuation. Pumping zone represents 0.360-0.465 of the active length (La) of the worm. Compression zone represents 0.018-0.023 of La. Feeding zone amts. to 0.517-0.622 of La. Clearance between the worm and the cylinder corresponds to 0.00003439-0.0001146 of La. Thickness of the thread of the worm is determined from: e = ai + bienCiLa. Depth of the channel and the radius of the coupling of the worm core in the feeding and pumping zone is determined by formula (I), where j is a measured parameter and the small indices represent suitably chosen coeffts..