Method and device for producing a two-chamber tube
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United States of America Patent
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Apr 22, 2003
Grant Date -
N/A
app pub date -
Sep 17, 2001
filing date -
Mar 16, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a method for producing a two-chamber tube with a dividing wall (9) that extends into the tube head. This method comprises the following steps: a) inserting a dividing wall (9) into the gap (8) of an auxiliary mandrel (6); b) sliding a prefabricated tube pipe body (11) onto said auxiliary mandrel (6), which has been fitted with the dividing wall (9); c) axially transferring the blank (12) produced in step b) from the auxiliary mandrel (6) onto a pressing mandrel (2); d) adding a molten portion of a plastic material in a female mold (3); e) conveying the pressing mandrel (2) with the blank (12) into the female mold (3) with the portion of a plastic material in an axial position, in order to mold a tube head onto the blank (12); f) pressing the material portion between the pressing mandrel 92) and the female mold (3) in order to form a tube head, at the same time producing a solid connection with the pipe body (11) and with the section of the dividing wall (9) that is located in the area of the tube head by closing the mold; g) opening the mold, removing the pressing mandrel (2) and withdrawing the finished two-chamber tube. The invention also relates to a device for carrying out the method.
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