INNER COOLING BODY FOR A BLOWN FILM EXTRUSION LINE, BLOWN FILM EXTRUSION LINE COMPRISING SUCH AN INNER COOLING BODY AND METHOD FOR OPERATING SAID BLOWN FILM EXTRUSION LINE

The formation of paraffin condensate on an inner cooling body of a blown film extruder can be either avoided or allowed in a controlled manner and then removed, thereby reducing damages to the film tube or even avoiding them. In an inner cooling body for a blown film extrusion line, the inner coolin...

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Bibliographic Details
Main Authors BÜHL Daniel, SCHUMACHER Holger, LETTOWSKY Christoph
Format Patent
LanguageEnglish
Published 08.09.2016
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:The formation of paraffin condensate on an inner cooling body of a blown film extruder can be either avoided or allowed in a controlled manner and then removed, thereby reducing damages to the film tube or even avoiding them. In an inner cooling body for a blown film extrusion line, the inner cooling body includes a shell around which a blown film tube, coming from the annular die, can ascend against gravity or can descend with gravity when the blown film extrusion line is running. The shell has a fraction condensate diverter for keeping paraffin condensate or any other condensate away from potential contact points of the blown film tube on the shell.
Bibliography:Application Number: US201415029059