Device and a process for the production of sleeves
AssigneeMichael Hoerauf Maschinenfabrik GmbH & Co. KG
InventorUwe Messerschmid
Life of this patent
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Abstract
The invention relates to a device and a process for manufacturing sleeves, in particular paper sleeves for the production of paper cups, comprising a take-up mandrel for taking up a sleeve, whereby the take-up mandrel comprises a circumferential recess, also comprising a press roller for placing on an outer side of the sleeve and for forming at least one circumferential projection in the recess of the take-up mandrel. In accordance with the present invention, the recess is designed in the form of a shoulder. Application for example for the production of stackable double-walled paper cups.
Claims9
A device for manufacturing paper sleeves for production of paper cups comprising a take-up mandrel for taking up a sleeve, whereby the take-up mandrel comprises a circumferential recess, the device further comprising a rotatable press roller for placing on an outer side of the sleeve for moving around an entire circumference of the take-up mandrel by rolling on the outer side of the sleeve and for forming a circumferential projection in the sleeve by conforming the sleeve to the recess of the take-up mandrel, wherein the recess is designed in the form of a shoulder and wherein the take-up mandrel is designed to allow a shortening of the sleeve during formation of the circumferential projection.
A process for production of a paper cup comprising:
- forming a cup sleeve;
- taking up the cup sleeve on an outer surface of a take-up mandrel, whereby the take-up mandrel is provided with a recess for forming a circumferential projection in the cup sleeve;
- placing a rotatable press roller on the cup sleeve outside of the recess;
- and
- forming the circumferential projection, which projects into the recess of the take-up mandrel, by moving the press roller around an entire circumference of the take-up mandrel by rolling on an outer side of the sleeve;
- wherein, during forming of the circumferential projection, the press roller draws in a part of material of the cup sleeve from the outer surface of the take-up mandrel into the recess, thereby shortening the cup sleeve.
Dependencies are inferred from the claim text.