A METHOD FOR MANUFACTURING A PHA DISPERSION COATED FIBERBASED SUBSTRATE

The present invention relates to a method for manufacturing a dispersion coated fiber-based substrate, said method comprising the steps of:a) forming a fibrous web from one or more fiber suspensions, at least one of said fiber suspensions being a broke suspension, and dewatering, and optionally dryi...

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Bibliographische Detailangaben
Hauptverfasser:	CUNHA, Gisela, NYFLÖTT, Åsa, BACKFOLK, Kaj, HILTUNEN, Mari
Format:	Patent
Sprache:	eng
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 IMPREGNATING OR COATING OF PAPER INKS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The present invention relates to a method for manufacturing a dispersion coated fiber-based substrate, said method comprising the steps of:a) forming a fibrous web from one or more fiber suspensions, at least one of said fiber suspensions being a broke suspension, and dewatering, and optionally drying, the fibrous web to obtain a fiber-based substrate having a first main surface and a second main surface;b) forming a dispersion coating layer on the first main surface by applying a dispersion coating composition comprising, in a liquid medium:50-99 wt% of dispersed PHA (polyhydroxyalkanoate) particles, based on the total solid content of the dispersion coating composition, and1 -50 wt% of dissolved low molecular weight polyol dispersant, based on the total solid content of the dispersion coating composition,wherein the dispersion coating composition has a total solid content in the range of 20-80 wt%, and drying the applied dispersion coating composition to obtain a dispersion coated fiber-based substrate;wherein the broke suspension in a) comprises 0.1-20 wt% of PHA based on the total solid content of the broke suspension.