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Sleeve Applicators UKby Lancing Ltd

Troubleshooting hub

Sleeve Applicator Troubleshooting Guides

Find practical fault guides for sleeve applicator setup, shrink tunnel adjustment, tamper band issues, container handling and film feed problems.

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Common sleeve faults

Fault guide for shrink sleeve wrinkles.

Tunnel, handling and setup faults

Fault guide for sleeve applicator mis-cuts.

Project support

Need help selecting the right sleeve applicator route?

Send container details, sleeve format, output and line layout to Lancing for a practical recommendation.

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Fault isolation

Separate sleeve-feed, application and tunnel faults before changing settings.

Start by retaining an unshrunk applied sleeve. If the cut, height, twist or seam position is already wrong before the tunnel, changing the tunnel recipe will not remove the root cause. If the applied sleeve is correct but the cooled pack is not, focus on shrink curve, dwell time, airflow or steam distribution and pack heat limits.

Run one controlled change at a time and record the container batch, sleeve reel, line speed and recipe. This avoids a temporary improvement being mistaken for a repeatable correction.

Mis-cuts and double cuts → Registration-mark problems → Barcode distortion after shrink →

Information to control in the project brief

  • Good and faulty unshrunk sleeves from the same run
  • Good and faulty finished packs after cooling
  • Container, closure and sleeve reel batch references
  • Applicator speed, sensor mode, cut mode and changeover settings
  • Tunnel recipe, conveyor speed, zone or steam settings and utility condition
  • Photographs or video showing the fault threshold and recovery
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Controlled fault finding

Capture the first failed stage before changing several settings.

Compare incoming reel condition, pre-tunnel application and cooled finished packs. Record the container, sleeve roll, speed, recipe and fault timing, then change one relevant variable at a time. This prevents a tunnel adjustment masking a placement fault or a machine adjustment compensating for damaged material.

Quality-control inspection plan →Controls and reject investigation →Reel storage and handling →

Start the investigation

Find the first process stage that differs from the approved pack.

Before choosing an individual fault guide, compare the sleeve reel, cut sample, pre-tunnel application, tunnel exit and cooled pack. The staged method reduces random adjustments and identifies whether the first change occurs in feed, cutting, placement, handling or shrinking.

Open the defect-source guide →

Evidence to capture before adjustment

  • Good and faulty packs from the same run
  • Unshrunk cut sleeves and pre-tunnel samples
  • Reel, artwork, container and closure references
  • Applicator and tunnel settings
  • Stop, restart, intervention and reject events