Co-extruded multi-layered cellulose-based film and a method for its manufacture

Disclosed is a co-extruded multi-layered cellulose-based film, which comprises at least a first film layer A comprising at least one first cellulose-based polymer and at least one second polymer. The film further comprises at least one sealing layer B being an outer layer and/or a middle layer of sa...

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Bibliographische Detailangaben
Hauptverfasser:	Asikainen, Martta, Anttila, Upi
Format:	Patent
Sprache:	eng ; fin ; swe
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CORRECTING FLUIDS DYES FILLING PASTES INKS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	Disclosed is a co-extruded multi-layered cellulose-based film, which comprises at least a first film layer A comprising at least one first cellulose-based polymer and at least one second polymer. The film further comprises at least one sealing layer B being an outer layer and/or a middle layer of said film, and at least one slip additive. Further, the film is produced by a film extrusion process. Disclosed is also concerns packaging materials comprising the film and a method related thereto. Kuvataan koekstrudoitu monikerroksinen selluloosapohjainen kalvo, joka käsittää ainakin ensimmäisen kalvokerroksen A, joka käsittää ainakin yhden ensimmäisen selluloosapohjaisen polymeerin ja vähintään yhden toisen polymeerin. Kalvo käsittää lisäksi ainakin yhden tiivistekerroksen B, joka on mainitun kalvon ulkokerros ja / tai keskikerros, ja ainakin yhden liukasteen lisäaineen. Kalvo on valmistettu kalvoekstruusioprosessilla. Kuvataan myös pakkausmateriaaleja, jotka käsittävät kalvon, sekä kalvoon liittyvän menetelmän.