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:
Jul. 27, 2004
Filed:
Sep. 04, 2001
Kay-Henrik Von Der Heide, Darmstadt, DE;
Gernot Von Haas, Leimen, DE;
Dieffenbacher Schenck Panel GmbH, Pfungstadt, DE;
Abstract
A method of making panel-shaped products by hot-pressing a multi-layered formed body of chips of lignocellulose-containing annual plants impregnated with an isocyanate binder, is to avoid the problem of the adhesion of the isocyanate binder. For this purpose, the cover layer material is divided into a cover layer material fine fraction ( ) and a cover layer material coarse fraction ( ), whereby the cover layer material fine fraction ( ) is pre-mixed with adhesion promoters and/or wetting agents and/or acids and/or bases, and next glued with amino and/or phenolic plastics, and the cover layer material coarse fraction ( ) is glued with isocyanate or mixtures of isocyanate and amino and/or phenolic plastics. Next, a five-layered formed body is spread, whereby the outermost cover layers of the formed body consist of the cover layer material fine fraction glued with amino and/or phenolic plastics.