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:
Sep. 16, 2008
Filed:
Oct. 06, 2004
Max Gmür, Mosnang, CH;
Max Gmür, Mosnang, CH;
Weidmann Plastics Technology AG, Rapperswil, CH;
Abstract
In a method of joining two workpieces () without extraneous materials to produce a workpiecewhich is joined over a joining area () which is formed by two fully adjoining surfaces () of the two workpieces (), with the first workpiece () being of plastic and the second workpiece () being of a material different from plastic, a strong bond is achieved even when the coefficients of thermal expansion of the workpieces are different by activating at least the surface () of the first workpiece () by irradiation with high-energy radiation in a first step, bringing the surfaces () of the workpieces () into contact in a second step and pressing the two workpieces () against one another at room temperature, in particular at a temperature of from 15° C. to 30° C., to join them at the surfaces ().