Record the symptom
Photograph the complete carton and close-ups of the top, bottom, leading and trailing seals. Note frequency, format, tape roll and operating condition.
Service & aftercare
Keep your case taper running reliably with support for installation, operator handover, tape heads, spare parts and maintenance planning.

We check carton dimensions, throughput, line layout and packing method so you buy equipment that suits the job.
We help confirm conveyor height, line direction, floor space and operator access before the machine arrives.
Your operators get practical guidance on adjustment, tape loading, safe operation, format checks and basic daily inspection.
Keep tape application reliable with the right blades, rollers, springs, belts and common wear items available when needed.
Simple maintenance checks help protect tape-head condition, belt tracking, guide settings, cleaning standards and seal quality.
When your cartons or packing line change, we can help review the setup before it causes avoidable downtime.
A case taper is a dependable machine when it is set up and maintained correctly. Good adjustment, tape-head condition, tape choice and carton presentation help prevent small issues from turning into daily packing delays.
Service planning
Many sealing problems look similar at the finished carton. Machine identity, tape details, photographs and a short operating video help narrow the likely cause before parts are ordered.
Send the machine make, model, serial number and clear photographs of the complete machine, data plate and tape head. If the data plate is missing, include measurements and photographs of the mounting points, blade area, rollers and tape path. Do not order a blade or spring from appearance alone where several tape-head versions may exist.
Show the top and bottom seams, tape start and finish, cut edge and any wrinkling, lifting or off-centre application. State whether the fault happens on every case, one size only, after a tape change or only at higher output. This helps distinguish tape adhesion, setup, carton presentation and worn-part issues.
Confirm the tape is loaded through the correct path, the roll turns freely, guides are aligned and cartons enter squarely. Adhesive build-up, cardboard dust, a changed tape specification or a new carton board can create symptoms that resemble a mechanical failure. Follow the machine manual and site isolation procedure before accessing blades or driven areas.
Blades, rollers, springs, belts and guides are common inspection points, but the correct spare depends on the installed machine. A useful spares list records part numbers, quantity on site, lead time and the consequence of failure. Busy dispatch or production lines may justify holding critical items locally.
Run the smallest, largest and most common cartons with the normal tape. Check feed, centring, cut quality and transfer to the next conveyor. Record the final settings so operators can restore the approved setup after future changeovers.
Final technical resource layer
A consistent fault record helps separate carton, tape, presentation and machine-condition causes and reduces repeated trial-and-error.
Photograph the complete carton and close-ups of the top, bottom, leading and trailing seals. Note frequency, format, tape roll and operating condition.
Use a known carton and tape, change one variable at a time and retain the failed and accepted samples where practical.
Stop and isolate equipment before jam clearance or work near knives, belts, rollers or stored energy. Escalate uncertain safety-related faults.
Use the carton sealing defect diagnosis guide to assemble the evidence. For repeat faults after size changes, compare the controlled changeover method with the site's approved settings and operator training.
Buyer questions
Good service information preserves the fault conditions and identifies the machine, tape head, carton and recent changes.
Record the exact seal defect or carton behaviour, affected formats, frequency, when it began, tape roll, settings, fault messages, line state and the point where the symptom first appears. Photograph accepted and failed results and obtain fixed-view video where safe. Preserving the original condition prevents a temporary adjustment from hiding the underlying cause.
Provide the machine make and identification details, tape-head markings, clear photographs of the assembly and part, tape width and type, orientation, dimensions where requested, and the symptom or reason for replacement. Do not rely on visual similarity alone; variants can have different mounting, application direction or mechanisms.
Check all three when a fault is intermittent, began after a packaging change, affects only certain formats, varies by roll or shift, or persists after an isolated adjustment. The seal is produced by the interaction of board surface and flaps, adhesive tape, carton presentation, tape-head condition and machine motion.
Record the date, machine identification, reported symptoms, safe inspections, parts and adjustments, settings affected, cartons and tape used for the functional check, resulting seal evidence, outstanding risks or actions and the person responsible for follow-up. Keep model-specific maintenance intervals and methods from the machine instructions with the log.
Browse the complete case taper buyer-question library · Discuss your cartons and packing process · Related answers: Why do carton tape tails vary? · Why do cartons skew or rotate?
Resource index
Use these service pages to describe the symptom, component or lifecycle stage before contacting Lancing for a safe review.
Maintenance readiness
The correct spares record starts with the installed machine and tape-head identity, then uses wear history and lead time to set stock priorities.
Record model, serial, revision, tape-head reference and fitted options before ordering.
Separate routine wear, critical, long-lead and insurance spares using real consequence and supplier lead time.
Record symptoms, part number, action and confirmation result so repeat failures can be investigated.
Read the case taper spares readiness guide · Request service or spares support