Method and an apparatus for compression moulding an object made of polymeric material

A method for producing an object made of a polymeric material, said polymeric material having a melting temperature (TF), comprises the steps of: melting the polymeric material; after the step of melting, cooling the polymeric material below the melting temperature (TF) in a cooling zone; severing a...

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Bibliographische Detailangaben
Hauptverfasser: Parrinello, Fiorenzo, Pucci, Fabrizio
Format: Patent
Sprache:eng
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Zusammenfassung:A method for producing an object made of a polymeric material, said polymeric material having a melting temperature (TF), comprises the steps of: melting the polymeric material; after the step of melting, cooling the polymeric material below the melting temperature (TF) in a cooling zone; severing a dose from a flow of polymeric material coming from the cooling zone by means of a severing element (5); obtaining said object by shaping the dose between a male forming element and a female forming element (10) which move towards one another with a mutual movement speed, the dose having a temperature lower than said melting temperature (TF). Between a start-of-forming configuration, in which the dose is in contact with both the male forming element and the female forming element (10), and a start-of-deceleration configuration, in which the male forming element and the female forming element (10) begin to decelerate relative to one another, the mutual movement speed is greater than 10 mm/s.