The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 31, 2015
Filed:
Apr. 08, 2011
Karl-heinz Schumacher, Neustadt, DE;
Gledison Fonseca, Mannheim, DE;
Rabie Al-hellani, Ludwigshafen, DE;
Wolfgang Gaschler, Niederwinkling, DE;
Ellen Krüger, Otterstadt, DE;
Andrea Herold, Weinheim, DE;
Hildegard Stein, Mexico, MX;
Oliver Hartz, Limburgerhof, DE;
Hubertus Kröner, Neustadt, DE;
Karl-Heinz Schumacher, Neustadt, DE;
Gledison Fonseca, Mannheim, DE;
Rabie Al-Hellani, Ludwigshafen, DE;
Wolfgang Gaschler, Niederwinkling, DE;
Ellen Krüger, Otterstadt, DE;
Andrea Herold, Weinheim, DE;
Hildegard Stein, Mexico, MX;
Oliver Hartz, Limburgerhof, DE;
Hubertus Kröner, Neustadt, DE;
BASF SE, Ludwigshafen, DE;
Abstract
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.