PRODUCING POLYHYDROXYALKANOATE (PHA) BLOWN FILM

A method for producing polyhydroxyalkanoate (PHA) blown film comprising the steps of melting PHA material to form a molten mass with a viscosity ranging from 1400 P to 1600 P at 340° F. to 350° F. (melting point of PHA), forming a bubble from the resulting molten mass and collapsing the bubble to fo...

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Bibliographische Detailangaben
Hauptverfasser:	Bowden, Tom, Tweed, Ed
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	A method for producing polyhydroxyalkanoate (PHA) blown film comprising the steps of melting PHA material to form a molten mass with a viscosity ranging from 1400 P to 1600 P at 340° F. to 350° F. (melting point of PHA), forming a bubble from the resulting molten mass and collapsing the bubble to form a film. Furthermore, due to the tight processing window or PHA compared to other blown films, PHA benefits from being produced using an enclosed climate-controlled blown film process as the climate can be controlled within the enclosure to ensure the tight processing window is maintained.