Blocking of fiber side against PE side in the pile
High severitySymptoms
Ink printed on the fiber side transfers to the PE side of the sheet above; stuck sheets
Probable causes
- On 1-side stock, the smooth PE side of the sheet above makes full contact with the fresh ink below
- smooth PE doesn't let the ink breathe
- pile pressure
The Print Guy · 2026-10-05
Other problems in this category
Polyboard/Corona · TPG-119
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Polyboard/Corona · TPG-120
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Polyboard/Corona · TPG-122
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Polyboard/Corona · TPG-123
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Polyboard/Corona · TPG-124
Set-off and blocking in the pile with polyboard
Sheets stuck together; ink transferred to the PE face of the next sheet
Polyboard/Corona · TPG-127
Curl of single-side-coated polyboard
Sheets curling toward the PE side at the feeder or after printing; registration and feeding impossible