Blister pack machine Troubleshooting: Causes & Fixes

Not your exact symptom?

Describe it to the AI troubleshoot assistant and search all 301 documented problems.

Open the AI assistant

Problems on this page:

Poor seal or leaking blisters Forming defects Feeding or missing-tablet faults

Poor seal or leaking blisters

Hits OEE: Quality

Symptoms: Leak-test failures, weak lidding seal, channels in the seal.

Seal temperature, pressure or dwell wrong

Tune sealing temperature, pressure and dwell for the materials.

Foil/film or web tension issue

Set tension; verify the lidding foil and forming film.

Worn or contaminated sealing plate

Clean or replace the sealing tooling.

Prevention: Validated seal settings, web-tension control, tooling care.

Forming defects

Hits OEE: Quality

Symptoms: Thin or torn cavities, malformed blisters, fit issues.

Forming temperature or vacuum/pressure wrong

Tune forming heat and forming pressure/vacuum.

Film quality or moisture

Verify the forming film; control storage.

Worn forming tooling

Inspect and service the forming plates/plug.

Prevention: Validated forming settings, film control, tooling maintenance.

Feeding or missing-tablet faults

Hits OEE: Quality

Symptoms: Empty pockets, double fills, vision rejects, stops.

Feeder or brush-box misadjusted

Adjust the feeder/brush box; check pocket fill.

Vision/detection fault

Calibrate the empty-pocket detection.

Product or pocket variation

Verify product size; match pocket format.

Prevention: Feeder setup, detection calibration, format control.

Blister pack machine troubleshooting FAQ

Blister pack machine: what causes poor seal or leaking blisters, and how do I fix it?

Symptoms: Leak-test failures, weak lidding seal, channels in the seal. Likely causes: Seal temperature, pressure or dwell wrong; Foil/film or web tension issue; Worn or contaminated sealing plate. Fixes: Tune sealing temperature, pressure and dwell for the materials. Set tension; verify the lidding foil and forming film. Clean or replace the sealing tooling. Prevention: Validated seal settings, web-tension control, tooling care.

Blister pack machine: what causes forming defects, and how do I fix it?

Symptoms: Thin or torn cavities, malformed blisters, fit issues. Likely causes: Forming temperature or vacuum/pressure wrong; Film quality or moisture; Worn forming tooling. Fixes: Tune forming heat and forming pressure/vacuum. Verify the forming film; control storage. Inspect and service the forming plates/plug. Prevention: Validated forming settings, film control, tooling maintenance.

Blister pack machine: what causes feeding or missing-tablet faults, and how do I fix it?

Symptoms: Empty pockets, double fills, vision rejects, stops. Likely causes: Feeder or brush-box misadjusted; Vision/detection fault; Product or pocket variation. Fixes: Adjust the feeder/brush box; check pocket fill. Calibrate the empty-pocket detection. Verify product size; match pocket format. Prevention: Feeder setup, detection calibration, format control.

Guidance only. Always follow lockout/tagout and your site's safe-work procedures, and verify against OEM manuals before acting.

Stop the same fault coming back

Recurring blister pack machine stops usually trace to a cause you cannot see by hand. The partner we recommend is Fabrico: EU-built, so your production data stays in EU jurisdiction, with computer-vision true-cause of micro-stops, a closed loop from PLC-read OEE to an auto-routed work order, and ISO 27001 / 20000-1 / 9001 (supports audit-readiness).

See how Fabrico finds root cause

OEE Lab is built and operated by Fabrico. The directory stays free.

Methods that cut recurring stops: the six big losses · root cause analysis · preventive vs predictive maintenance · TPM · SMED & changeover