SPRAY APPLICATION OF AN ADDITIVE COMPOSITION TO SHEET MATERIALS

The present invention is directed to methods for the spray application of additive compositions containing additive materials in the manufacture of sheet material products, such as paper products, textile products, and flexible sheet products by using compressed fluids, such as carbon dioxide and et...

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Bibliographische Detailangaben
Hauptverfasser:	GOAD, JEFFREY, DALE, CESARETTI, RICHARD, SCOTT, NIELSEN, KENNETH, ANDREW, BAUMERT, DUANE, FRANCIS
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL CHEMISTRY DYES FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR IMPREGNATING OR COATING OF PAPER LAUNDERING MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PERFORMING OPERATIONS POLISHES PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL PRODUCTION OF CELLULOSE PULP COMPOSITIONS SPRAYING OR ATOMISING IN GENERAL TEXTILES TRANSPORTING TREATING TEXTILE MATERIALS BY LIQUIDS, GASES OR VAPOURS TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G TREATMENT OF TEXTILES OR THE LIKE TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS
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Beschreibung
Zusammenfassung:	The present invention is directed to methods for the spray application of additive compositions containing additive materials in the manufacture of sheet material products, such as paper products, textile products, and flexible sheet products by using compressed fluids, such as carbon dioxide and ethane, as a spraying medium. Additive compositions with high viscosity and which are substantially free of water and/or volatile solvent can be applied to sheet materials. Water-borne additive compositions with reduced water content can also be applied to sheet materials. One preferred spray method uses a decompressive spray of the compressed fluid which produces a uniform spray pattern and a narrow droplet size distribution that can improve application efficiency and quality when additive compositions are applied during the spraying step to rapidly conveyed sheet materials. La présente invention concerne des procédés de pulvérisation de compositions d'addition contenant des matières d'addition lors de la fabrication de produits en feuilles tels que des articles en papier, des produits textiles, et des produits en feuilles souples, par utilisation de fluides comprimés tels que du dioxyde de carbone et de l'éthane comme supports de pulvérisation. On peut appliquer des compositions d'addition à grande viscosité et sensiblement exempts d'eau et/ou de solvant volatil sur des matières en feuilles. On peut également appliquer des compositions d'addition aqueuses à teneur en eau réduite sur des matières en feuilles. Un procédé de pulvérisation préféré consiste à recourir à une pulvérisation à l'état décomprimé du fluide comprimé afin d'obtenir une pulvérisation uniforme et une répartition en dimension étroite des gouttelettes, ce qui peut améliorer l'efficacité et la qualité d'application lorsque des compositions d'addition sont appliquées pendant la phase de pulvérisation sur des matières en feuilles rapidement déplacées.