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. 03, 2007
Filed:
May. 31, 2002
Ralf-peter Peters, Bergisch-Gladbach, DE;
Wolfgang Stoeters, Muelheim, DE;
Ralf-Peter Peters, Bergisch-Gladbach, DE;
Wolfgang Stoeters, Muelheim, DE;
Boehringer Ingelheim microparts GmbH, Dortmund, DE;
Abstract
In the swell-welding according to the invention of two bodies, of which at least one body consists of plastic, the connection surface of the plastic body is firstly exposed to a gas which contains the vapor of a swelling agent for the plastic. The plastic body reversibly swollen at the surface is welded to the other body by pressing onto one another, and the pressed-together bodies are conditioned. In all process steps, the temperature of the bodies to be connected is below the glass transition temperature of the plastic. No auxiliary substance remains in the welded body. The flush connection produced by swell welding is durable and strong.