Creases form in substrate.


-Baggy substrate;

– Web guide not operating or properly set;

– Press out of alignment;

– Foreign matter on press rollers;

– Excessive web temperatures;

– Variations in substrate gauge.


– Draw out wrinkles by tapping rollers at web edge;

– Check and clean web guides. Set web guides and position cores so that web will unwind and rewind at equal distances from the shaft ends;

– Realign press, especialy rollers;

– Clean all rollers from build up of ink, tape or other sticking matter;

– Reduce web temperature;

– Replace with new substrate.

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