Page 218 - Training 2019

PERFORMANCE PROBLEM SOLVING.

PLATE LIFTING FROM TAPE:
Root cause #1:
Poor plate cleaning or dust / contamination.
Solution:
Use correct solvent and clean again.
Disadvantages / Factors:
Ethyl Acetate and other heavy solvents can affect the adhesive performance.

Root cause #2:
Solvent residue.
Solution:
Use correct solvent and allow to dry before mounting.
Disadvantages / Factors:
New photopolymer plates may contain residue from the platemaking process.

Root cause #3:
Tape doesn’t adhere well enough.
Solution:
Select the right adhesive level, use an adhesion pen on the leading edge and tail edge of the plate. Secure the plates into
position with PVC tape.
Disadvantages / Factors:
Small diameter plate rollers / rigid plates / butt joints

Root cause #4:
Incorrect application methods.
Solution:
Apply good pressure during the mounting process and use a rubber roller.
Disadvantages / Factors:
Untrained or inexperienced operators.

Root cause #5:
Atmosphere.
Solution:
Typical temperature for application: 15 °C to 25 °C, improve on storage conditions. Store in an air-conditioned or cool
place. Rolls should not be left in work environment or hot machine rooms.
Disadvantages / Factors:
Very hot days where temperatures exceed 30 °C.

Root cause #6:
Damaged plate edges.
Solution:
Use new plates / select higher adhesion.
Disadvantages / Factors:
Operator damaged edges when removing plates.

TAPE LIFTING FROM THE CYLINDER OR SLEEVE
Root cause #1:
Poor cylinder / sleeve cleaning or dust / contamination.
Solution:
Use correct solvent and clean again.
Disadvantages / Factors:
Ethyl Acetate and other heavy solvents can affect the adhesive performance.

SCAPA CUSHION MOUNT TRAINING MANUAL 2
Updated - 24 June 2019