| INCORRECT TREATMENT OF THE ROLLER COVER AND ITS EFFECTS |
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Frequent washing:
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- Leads to shortened service life of the roller cover caused by the separation of material particles and excessive chemical stress on the roller cover.
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| Insufficient washing, cleaning and maintenance: |
- Filling in, glazing and hardening of the roller surface.
- Bad ink splitting.
- Enhanced wear or pollution of the printing plate by loosening ink rests.
- Linting and fluffing.
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| Aggressive or wrong Washing Agents: |
- Swelling or shrinkage, causing too high or too low setting.
- Dissolution or quick abrasion of the cover.
- Enhanced wear or pollution of the printing plate by loosening ink rests.
- Linting and fluffing.
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| Usage of inadequate Inks, UV-inks, lacquers etc. |
- Swelling or shrinkage, causing too high or too low setting.
- Dissolution or quick abrasion of the cover.
- Hardening or glazing of the roller surface.
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| Dry running at the ends or in the range of reduced ink transport: |
- Premature glazing caused by drying of the ink.
- Formation of axial and radial cracks.
- Partial picking of the roller cover.
- Marks in the printed image.
- Locally enhanced accumulation of the hickies.
- Local overheating.
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| Calcareous dampening water: |
- Filling and glazing of the roller surface by calcareous deposits.
- Ghosting and streaking.
- Enhanced wear of the printing plate.
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| Inappropriate Cleaning by means of sharp-edged objects like spatula or wire brush: |
- Mechanical damage or scratching of the roller-surface.
- Hickeys accumulation and loosening of rubber particles resulting in pollution of the printing form and marks in the print.
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| During storage no protection against sun or ozone influence of temperature, noxious gas: |
- Glazing of the roller surface.
- Embrittlement and formation of cracks.
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