Método para produzir um substrato revestido e substrato revestido

Production of a coated substrate involves contacting a multilayer free flowing curtain with a continuous web substrate. Production of a coated substrate involves contacting a multilayer free flowing curtain with a continuous web substrate. The multilayer free flowing curtain comprises at least two l...

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Bibliographische Detailangaben
Hauptverfasser:	FRANCIS DOBLER, ROBERT URSCHELER
Format:	Patent
Sprache:	por
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING IMPREGNATING OR COATING OF PAPER METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PERFORMING OPERATIONS 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 THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G WORKING-UP
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Beschreibung
Zusammenfassung:	Production of a coated substrate involves contacting a multilayer free flowing curtain with a continuous web substrate. Production of a coated substrate involves contacting a multilayer free flowing curtain with a continuous web substrate. The multilayer free flowing curtain comprises at least two layers imparting at least two different barrier functionalities selected from oil and/or grease barrier, water vapor barrier, water resistance or oxygen barrier functionality. The coated substrate has a kit value of at least 5 (preferably at least 8, especially at least 11) in the flat-test when an oil and/or grease barrier layer is present; has a water vapor transmission rate of less than 50 (preferably less than 40, especially less than 30) g/(m 2>/day) (50% relative humidity, 23[deg]C) when a water vapor barrier layer is present; has a 10 minute Cobb value of less than 20 (preferably less than 12, especially 1.5) g/m 2> when water resistance layer is present; and has an oxygen transmission rate of less than 200 (preferably less than 150, especially less than 100) cm 2>/(m 2>/24 hour/bar) (1 atm, 23[deg]C, 90% relative humidity) when an oxygen barrier layer is present.