Troubleshooting of Rubber Rollers

Troubleshooting Guide

1. Oxide Film on Rubber Rollers

2. Ink Rejection on Rubber Rollers

3. Rubber Residue Formation

Common Malfunctions & Countermeasures

• Symptom: Fine cracks across the entire rubber surface

  Cause: Excessive roller pressure or prolonged storage under improper conditions

  Solution: Reduce pressure; grind the surface to expose fresh rubber immediately.
• Symptom: Deep cracks all over the rubber surface

  Cause: Untreated fine cracks deteriorated further due to ozone, thermal and oxidative aging

  Solution: Grind out shallow cracks; replace the rubber layer for severe cracking.
• Symptom: Partial cracks on the rubber surface

  Cause: Uneven roller pressure

  Solution: Adjust pressure to ensure uniform contact.
• Symptom: Rubber layer peels off the metal core at both ends

  Cause: Abnormal overheating

  Solution: Locate the heat source and root cause to prevent reoccurrence.
• Symptom: Full delamination of the entire rubber surface

  Cause: Excessive roller pressure

  Solution: Readjust the operating pressure.
• Symptom: Flat areas on the rubber surface

  Cause: Pressure retained during machine shutdown or direct contact between roller and ground

  Solution: Run the roller idle to restore its shape; grind the surface if deformation cannot be corrected.
• Symptom: Hardened rubber surface

  Cause: Improper long-term storage, incomplete cleaning, adhesion of cured ink and natural rubber aging

  Solution: Grind the surface; replace the rubber layer if the problem persists after grinding.
• Symptom: Softened rubber surface

  Cause: Soaked in chemical agents, especially softened by organic solvents

  Solution: Grind the surface; replace the entire roller if recovery is impossible.
• Symptom: Overall uneven rubber surface

  Cause: Erosion by chemical solvents

  Solution: Grind the surface or replace the rubber layer.
• Symptom: Partial irregularities on the rubber surface

  Cause: Local overpressure and partial delamination between rubber layer and metal core

  Solution: Replace the rubber roller.
• Symptom: Out-of-round roller body

  Cause: Deformation from long-term wear and sustained excessive compression

  Solution: Grind the roller to restore roundness.