METHOD OF CONTROLLING CROSS-WEB CALIPER PROFILE OF BIAXIALLY ORIENTED POLYMERIC FILMS

The present application discloses a method of controlling a cross-web caliper profile of a biaxially oriented polymeric film by stretching the film in a length orienter (100) having an adjustable profile cross-web heat distribution system (150a, 150b, 150c), subsequently deforming the film in a tent...

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Bibliographic Details
Main Authors WONG, CHIU PING, KARG, DONOVAN C. JR
Format Patent
LanguageEnglish
French
German
Published 30.03.2016
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 present application discloses a method of controlling a cross-web caliper profile of a biaxially oriented polymeric film by stretching the film in a length orienter (100) having an adjustable profile cross-web heat distribution system (150a, 150b, 150c), subsequently deforming the film in a tenter (200) oven having a deformation zone, measuring the cross-web caliper profile of the film at a location downstream from the deformation zone, optionally mapping the measured cross-web caliper profile of the film onto the length orienter, and adjusting the cross-web heat distribution system in response to the measured cross-web caliper profile.
Bibliography:Application Number: EP20050773294