Pad Printing Head Common Defect Troubleshooting Guide
author: Lulu
2026-09-01
Pad printing head quality directly affects printing results and efficiency. Common defects include bubbles, blurred patterns, cracking and short life. This guide covers causes and solutions.
**Bubbles and Pinholes**
Bubbles are the most common defect, caused by air entrainment during stirring, improper pouring, insufficient degassing and dusty mold. Solutions: stir at moderate speed with rod submerged, pour slowly from one side, vacuum degas 2 to 3 minutes or sit 5 to 10 minutes naturally, clean mold thoroughly.
Bubbles are the most common defect, caused by air entrainment during stirring, improper pouring, insufficient degassing and dusty mold. Solutions: stir at moderate speed with rod submerged, pour slowly from one side, vacuum degas 2 to 3 minutes or sit 5 to 10 minutes naturally, clean mold thoroughly.
**Blurred Patterns**
Blurred patterns caused by wrong hardness, dirty surface, improper ink viscosity, aged pad and wrong parameters. Solutions: select right hardness (25A general like HY-912 for flat and curved, 16A like HY-916 for large curved), clean with alcohol, adjust ink viscosity, replace aged pad, optimize pressure and speed.
Blurred patterns caused by wrong hardness, dirty surface, improper ink viscosity, aged pad and wrong parameters. Solutions: select right hardness (25A general like HY-912 for flat and curved, 16A like HY-916 for large curved), clean with alcohol, adjust ink viscosity, replace aged pad, optimize pressure and speed.
**Cracking and Short Life**
Cracking caused by excessive component B, high curing temperature, internal bubbles, strong solvent cleaning
Cracking caused by excessive component B, high curing temperature, internal bubbles, strong solvent cleaning
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