BLOCO DE ALIMENTAÇÃO ANULAR E MÉTODOS PARA FILME COEXTRUDADO

A feedblock for a film extruder used to produce a uniform, multiple layer web. The feedblock has a generally annular configuration, for receipt of a core material and a skin material. The feedblock has a varying radial dimension for passage of the skin material therethrough. After feeding the core m...

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Bibliographische Detailangaben
Hauptverfasser:	RONALD W. AUSEN, GIBSON L. BATCH, CHRISTOPHER C. KENT
Format:	Patent
Sprache:	por
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:	A feedblock for a film extruder used to produce a uniform, multiple layer web. The feedblock has a generally annular configuration, for receipt of a core material and a skin material. The feedblock has a varying radial dimension for passage of the skin material therethrough. After feeding the core material and the skin material through the feedblock and then a die, a flat web having at least three layers, uniform across the web width, is obtained.