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US 6,165,114 AGranted
Arrangement for manufacturing a can
AssigneeMichael Hoerauf Maschinenfabrik GmbH & Co. KG
InventorsWerner Stahlecker, Berthold Mueller
Life of this patent
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Abstract
A container comprises a sleeve and two end walls. The sleeve is made of a tube having a plurality of paper layers. The end walls are inserted into the sleeve and are bonded in a sealed way thereto. According to the present invention, each of the end walls has a rim which projects outwards, around which rim the tube is bent and bonded by means of heat sealing. A stable, sealed bonding is thus obtained, whereby the application of different materials for the end walls is possible.
Claims7
Apparatus for manufacturing a container comprising:
- a work station for feeding a tube;
- work stations for inserting at least one end wall in each tube;
- work stations for bending the tube against a peripheral flange of a relevant inserted end wall;
- work stations for manufacturing heat seal seams binding the end wall to the tube;
- and
- a conveyor device for transporting a tube consecutively between said work stations;
- wherein
- at least one work station having a heating unit for heating the tube is provided upstream of the work stations for inserting said end wall;
- the heating unit for heating the tube heats a radially inner surface of an end area of the tube, including a radially inner surface portion of said end area to be covered by said flange of an end wall after said insertion of said end wall into the tube;
- and
- at least one work station for heating said end area of said tube is provided downstream of the work stations for inserting said wall.
8 more elements
Dependencies are inferred from the claim text.