Method for manufacturing strand shaped articles

A precision hotmelt plastics extrusion assembly has an inner chamber packed with raw polymer, a heating element, and a discharge plunger (3) to a nozzle (4). The inner chamber is an intermediate space between an outer cylinder (1) and a cylindrical inner rod (2). The outer and inner cylinders (2) ar...

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Bibliographic Details
Main Author GIELENZ, GERHARD
Format Patent
LanguageEnglish
French
German
Published 16.11.2011
Subjects
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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Summary:A precision hotmelt plastics extrusion assembly has an inner chamber packed with raw polymer, a heating element, and a discharge plunger (3) to a nozzle (4). The inner chamber is an intermediate space between an outer cylinder (1) and a cylindrical inner rod (2). The outer and inner cylinders (2) are coaxial. Molten plastic is expelled by a piston (3) whose diameter forms a seal against the inner volume. The outlet nozzle is conical and matched by the profile of the cylindrical inner rod, which has a roughened surface (5) to promote mixing. The discharge piston has a conical profile.
Bibliography:Application Number: EP20070013446