Solvent-resistant liquid packaging board, its manufacturing method and use, and a drinking cup made of the same

Polymer-coated, heat-sealable liquid packaging board that resists solvents (e.g. strong alcoholic drinks), method of manufacturing board, and drinking cup made of board. Resistance to solvents is achieved by lowering raw edge penetration into the board. The fiber base of the board contains at least...

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Bibliographische Detailangaben
Hauptverfasser:	MYLLYKANGAS JANNE, HEISKANEN ISTO, RÄISÄNEN TIMO
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING HANDLING THIN OR FILAMENTARY MATERIAL IMPREGNATING OR COATING OF PAPER LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM PACKAGES PACKAGING ELEMENTS PACKING PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PERFORMING OPERATIONS PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS STORING TEXTILES TRANSPORTING TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
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Beschreibung
Zusammenfassung:	Polymer-coated, heat-sealable liquid packaging board that resists solvents (e.g. strong alcoholic drinks), method of manufacturing board, and drinking cup made of board. Resistance to solvents is achieved by lowering raw edge penetration into the board. The fiber base of the board contains at least 1.3 kg of hydrophobic size containing alkyl ketene dimer and at least 1.0 kg of wet-strength size per 1 ton of dry matter. Fiber base density is 630-800 kg/m3. The amount of heat-sealable polymer in the top layer is higher than the Bristow wheel roughness volume of the uncoated fiber base and/or at least 14 g/m2. When manufacturing the board, the alkyl ketene dimer size and a wet-strength size are added into the stock. The pH of the tail water is adjusted so as to be alkaline (about 7 or more).