Stretch Film Keeps Breaking? Find the Cause Before Changing Grade

When stretch film keeps breaking, the fastest response is often to reduce tension or fit a thicker roll. Either change might alter the symptom while leaving the cause unresolved. Start by recording where the tear begins, which loads trigger it and what changed before the problem started. That evidence helps separate damaged rolls, threading mistakes, equipment faults and a poor film-to-load match.

Record the break before changing the settings

Note the film product code and batch, wrapper model, current recipe and approximate point in the cycle. Photograph the damaged edge or first visible hole when it can be done safely. Record whether the issue began after a roll change, maintenance work, a different load or a new shift.

Separate a full-width snap from a tear that starts at one edge. Also distinguish a break inside the carriage from one between the final roller and the load. These descriptions are more useful to a supplier or service technician than a general report that the film is weak.

If the problem follows the roll, inspect handling first

Check the roll edges for cuts, dents or damage from transport and storage. Small edge nicks can become the starting point of a tear during wrapping. Keep an affected roll and its label for investigation rather than discarding the evidence.

A comparison with an undamaged roll of the same approved grade can help narrow the search. Keep the load and recipe unchanged during that comparison. If another roll runs correctly, document the difference; it is a clue, rather than immediate proof that an entire batch is faulty.

For manual wrapping, inspect the dispenser and how the roll is fitted as well. A change in the handle or tension-control arrangement belongs in the fault record, especially when breaks began after replacing a hand stretch film roll.

If the tear starts in the carriage, check the film path

Compare the threading with the exact diagram for your wrapper. Then have the appropriate person inspect contact surfaces for damage, contamination or tracking problems. Follow the machine maker's isolation procedure before inspection near moving components; do not reach into an operating carriage.

Check threading, tension and roller condition before making several setting changes at once. Record the condition of the film path and any correction so the result can be traced to a specific change.

Location matters. Record whether breakage begins inside the stretch rollers or farther along the film path. Use your own model's manual for adjustments and service work; settings and repair instructions from another carriage are not interchangeable.

If only certain loads break film, examine the contact point

Look for protruding carton edges, damaged pallets, sharp corners or product that shifts during wrapping. Record the exact corner and height where the tear starts. Check the way that load is built before deciding that every pallet needs more film.

If the load cannot be made more consistent, discuss an approved protective measure, revised wrapping recipe or different film grade with the responsible packaging team. Do not assume that nominal thickness alone predicts the result. A replacement machine stretch film grade still needs to run on the actual carriage and load.

Restore production with a recorded correction

Change one relevant variable at a time within approved operating limits. Record the old value, new value and observation. Reducing force until the film stops breaking is incomplete troubleshooting: the resulting wrap must still provide the containment your load requires.

After the correction, check repeated cycles and the finished pallets, including the previously troublesome loads. Confirm film condition, load distortion and your normal containment checks. Return the accepted recipe to the shift record so the next operator does not have to repeat the investigation.

If the fault remains unresolved, send the film specification, batch reference and break-location record with your enquiry. Recurring mechanical faults need the equipment service team; suspected material defects need a retained roll and traceable evidence. A precise handover is more useful than another unrecorded tension adjustment.