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US 5,606,914 AGranted
Process and device for printing sheeting in rotary offset press
AssigneeCleanpack GmbH Innovative Verpackungen
InventorDetta Borgardt
Life of this patent
Estimating the term…
Abstract
A method and an apparatus for the printing of foil webs in web offset printing are proposed in which strongly oxidatively drying inks are used, the printed foil webs are subjected to a heat-air drying, the printed foil webs are furthermore conducted over at least one cooling roll before they are wound up, and the tension of the web upon the winding is reduced as the diameter of the roll increases.
Claims26
A method for the printing of foil webs in web offset printing, in which
- strongly oxidatively drying inks are used,
- the printed foil webs are subjected to a combined heat-air drying;
- the printed foil webs, before being wound up, are conducted over at least one cooling roll, and
- the tension of the web upon the winding is reduced as the diameter of the roll increases.
1 more element
An apparatus for the printing of foil webs with strongly oxidatively drying inks in web offset printing, having
- an unwinding unit (2) in which the foil material (10) is unwound from a roll (22),
- at least one printing device (4a-4d) having in each case a printing unit and an inking unit;
- an after-treatment unit which comprises a heat-air drying device (6) and at least one cooling roll (7a, 7b);
- and
- a winding device (8) in which the foil material is wound onto a roll (82) and which has a web-tension control device (84, which reduces the tension of the web with the increase in diameter of the roll upon winding.
2 more elements
Dependencies are inferred from the claim text.