Film or coating of transparent material, in particular plastic

The invention concerns a film and/or layer which contains transparent and inclined opaque sectional zones and is produced by superposing and joining individual transparent and opaque or reflecting sheets and subsequently separating them. The preferred application of the invention is in anti-photocop...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: PETER HEILMANN, ALASTAIR R. MACGREGOR, HELMUT STEININGER
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:The invention concerns a film and/or layer which contains transparent and inclined opaque sectional zones and is produced by superposing and joining individual transparent and opaque or reflecting sheets and subsequently separating them. The preferred application of the invention is in anti-photocopying sheets or layers.