Cartoner Troubleshooting: Causes & Fixes

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Problems on this page:

Carton misfeed or no carton Poor carton forming or crushed cartons Product loading jam Tuck flaps not closing Leaflet or insert missing Empty or short cartons Batch or expiry code missing on cartons Stops when the carton magazine runs empty

Carton misfeed or no carton

Hits OEE: Availability

Symptoms: Cartons not picked from the magazine, missing cartons, stops.

Vacuum pick fault

Check vacuum, cups and the pick timing.

Magazine empty or jammed

Refill; clear jams; check carton quality.

Carton blank variation

Tighten the blank spec; control humidity and storage.

Prevention: Vacuum maintenance, magazine monitoring, blank quality control.

Poor carton forming or crushed cartons

Hits OEE: Quality

Symptoms: Cartons not square, crushed or torn, poor flap closure.

Forming or timing maladjusted

Re-time forming and tucking; adjust the guides.

Glue or compression fault

Check the hot-melt glue and compression settings.

Worn forming tooling

Inspect and replace worn forming parts.

Prevention: Timing checks, glue maintenance, tooling inspection.

Product loading jam

Hits OEE: Availability

Symptoms: Product not loaded into the carton, jams at the loading station.

Infeed or bucket timing off

Sync the product infeed with the carton position.

Product variation or misorientation

Tighten product handling upstream.

Pusher or loader fault

Check the loader mechanism and its sensors.

Prevention: Timing and sync checks, upstream handling, loader maintenance.

Tuck flaps not closing

Hits OEE: Quality

Symptoms: Tuck-end flaps not inserted, open carton ends, flaps folded the wrong way.

Tucker or plough timing or position off

Re-time the tuckers and set the ploughs for this carton.

Stiff or uneven score lines on the board

Check board and scoring against spec with the carton supplier.

Worn tuck plates or ploughs

Replace worn tuck plates and ploughs.

Prevention: Tucker settings on the format sheet and board checks at receiving.

Leaflet or insert missing

Hits OEE: Quality

Symptoms: Cartons leave without the leaflet or insert; missing-insert rejects pile up.

Leaflet feeder not picking

Clean or replace the feeder cups and check vacuum.

Leaflets folded badly or out of spec

Adjust the folder and check the paper with the supplier.

Missing-insert detection not tested

Test the detection and reject with a test carton every shift.

Prevention: A start-of-shift test of the insert detection and reject.

Empty or short cartons

Hits OEE: Quality

Symptoms: Cartons with missing product reach the checkweigher or the customer.

Product sensor dirty or misaligned

Clean and align the product presence sensor.

Gaps in the infeed leave buckets empty

Tune the infeed so every bucket or pocket is filled.

Reject not working

Test the reject with a deliberately empty carton.

Prevention: Empty-carton reject tested every shift and checkweigher limits set to catch a missing unit.

Batch or expiry code missing on cartons

Hits OEE: Quality

Symptoms: Cartons with no code, a faint code or a code in the wrong place.

Coder not triggered

Check the product sensor or encoder signal to the coder.

Coder needs maintenance

Clean the printhead or embossing tool and replace consumables as the coder maker says.

Board finish not suited to the coding method

Match the coding method and ink to the carton's varnish or coating.

Prevention: Code readability checked at start-up and after every carton lot change.

Stops when the carton magazine runs empty

Hits OEE: Availability

Symptoms: The cartoner stops for the magazine and an operator is tied to loading blanks.

Magazine too small for the run rate

Fit an extended or floor-level magazine.

No low-level warning

Add or enable a low-level sensor and light.

Blanks delivered in bundles that are slow to load

Agree bundle size and packing with the carton supplier.

Prevention: Magazine loading planned into the operator's routine before it runs low.

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 cartoner stops usually trace to a cause you cannot see by hand. The partner we recommend is Fabrico: it tracks OEE and downtime live from PLCs, IoT sensors or AI cameras; where cameras are fitted, the video of a stop sits next to its machine data so the cause can be reviewed; and a technician opens the work order from the stop in the same system. Data is hosted in the AWS EU region, and Fabrico and the company behind it hold ISO/IEC 27001, ISO/IEC 20000-1 and ISO 9001.

Book a Fabrico demo

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