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. 29, 2003
Filed:
Nov. 03, 1995
Alexander Theil, Reinheim, DE;
Karl-Heinz Fehring, Stockstadt/Rh., DE;
Friedel Emmerich, Seeheim-Jugenheim, DE;
Roehm GmbH & Co. KG, Darmstadt, DE;
Abstract
The invention concerns a method for the production of a flat composite ( ) from plastic parts by means of a thermal adhesion of two plastic parts ( ′), heated on one side of their surfaces ( ′), consisting of plastics A and B, wherein the surfaces ( ′) are heated on the adhesion side to surface temperatures of 10 to 100° K. above the Vicat softening points VET (according to DIN ISO 306) of the pertinent plastics A and B, provided that the plastic parts ( ′) retain their original shape during the preheating phase, and are pressed between a pair of rolls ( ), at an advance rate between 5 and 200 mm/sec and with a pressing force between 10 and 500 N acting on the roll ( ); preferably, the plastics ( ′) exhibit engraving or embossing ( ′), with which composite ( ) can be produced with a three-dimensional inclusion ( ) of a defined shape; furthermore, a flat or elongated object ( ) is embedded between the plastic parts ( ′) to be adhered during the adhesion of the composite ( ).