METHOD AND APPARATUS FOR MANUFACTURING A FILM WITH MARKINGS
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United States of America Patent
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Issued Date -
Dec 13, 2012
app pub date -
May 2, 2012
filing date -
May 3, 2011
priority date (Note) -
Abandoned
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Abstract
A method for manufacturing a film that is provided with markings and is based on a thermoplastic plastic. The thermoplastic plastic is melted in an extruder and emerges from an extrusion die in the form of a melt web. The melt web is conveyed away over a surface of at least one cooling roller and cooled to produce the film. In subregions of the surface of the at least one cooling roller corresponding to the markings, the melt web and/or the film being produced from it is acted on with a different cooling action than in a remainder of the surface.
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