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:
Apr. 22, 2003
Filed:
Sep. 17, 2001
Gerhard Keller, Jongny, CH;
Jean-Pierre Voigtmann, Martigny, CH;
Aisa Automation Industrielle SA, Vouvry, CH;
Abstract
The invention relates to a method for producing a two-chamber tube with a dividing wall ( ) that extends into the tube head. This method comprises the following steps: a) inserting a dividing wall ( ) into the gap ( ) of an auxiliary mandrel ( ); b) sliding a prefabricated tube pipe body ( ) onto said auxiliary mandrel ( ), which has been fitted with the dividing wall ( ); c) axially transferring the blank ( ) produced in step b) from the auxiliary mandrel ( ) onto a pressing mandrel ( ); d) adding a molten portion of a plastic material in a female mold ( ); e) conveying the pressing mandrel ( ) with the blank ( ) into the female mold ( ) with the portion of a plastic material in an axial position, in order to mold a tube head onto the blank ( ); f) pressing the material portion between the pressing mandrel ) and the female mold ( ) in order to form a tube head, at the same time producing a solid connection with the pipe body ( ) and with the section of the dividing wall ( ) that is located in the area of the tube head by closing the mold; g) opening the mold, removing the pressing mandrel ( ) and withdrawing the finished two-chamber tube. The invention also relates to a device for carrying out the method.