Use of synthetic adhesives in the manufacture of corrugated fiberboard

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United States of America Patent

PATENT NO 8992708
APP PUB NO 20110247746A1
SERIAL NO

13083028

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Abstract

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Described is the use of synthetic adhesives in the manufacture of corrugated fiberboard at relatively low temperatures and high lineal speeds. The corrugated fiberboard includes a corrugated sheet of paper and a flat linerboard and the corrugation of the corrugated sheet of paper is produced at paper temperatures below 95° C. and at a lineal speed above 150 m/min. The production of the corrugation of a corrugated sheet of paper is immediately followed by a continuous operation in which a preferably unheated corrugated board adhesive is applied and the corrugated sheet of paper is adhered to at least one first linerboard. The corrugated board adhesive used is an aqueous adhesive dispersion based on at least one synthetic, dispersed polymer having preferably more than 40% by weight solids content, selected from acrylate copolymers, copolymers of vinylaromatics and conjugated aliphatic dienes and vinyl acetate-alkylene copolymers, wherein the glass transition temperatures of the polymers are above 20° C. and (preferably at least 5° C.) below the surface temperature of the corrugated sheet of paper to which they are applied.

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Patent Owner(s)

Patent OwnerAddress
BHS CORRUGATED MASCHINEN- UND ANLAGENBAU GMBHPAUL-ENGEL-STRASSE 1 WEIHERHAMMER D-92729

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Al-Hellani, Rabie Ludwigshafen, DE 13 46
Fonseca, Gledison Mannheim, DE 35 319
Gaschler, Wolfgang Niederwinkling, DE 27 127
Hartz, Oliver Limburgerhof, DE 16 111
Herold, Andrea Weinheim, DE 34 115
Kröner, Hubertus Neustadt, DE 6 16
Krüger, Ellen Otterstadt, DE 1 7
Schumacher, Karl-Heinz Neustadt, DE 78 317
Stein, Hildegard Mexico, MX 8 72

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