Automatic L-sealer machines
For higher throughput carton and retail pack shrink wrapping.
Lancing UK shrink wrapping machinery
Shrink wrapping line specification
Plan the sealer, heat tunnel, conveyors and outfeed together so the line produces consistent packs.
Layout
A shrink wrapping line is more than the sealer
Line performance depends on how products arrive at the sealer, how they are spaced, how film is applied and how packs leave the tunnel. Even a good sealer can perform poorly if product transfer is unstable or the outfeed is not planned.
Integration
Common line elements
- Infeed conveyor or manual loading area.
- Automatic L-sealer or sleeve sealer.
- Heat tunnel matched to film and speed.
- Outfeed conveyor, accumulation or packing table.
- Optional coding, labelling or inspection stage.
Throughput
Design around real production conditions
The quoted maximum speed of a machine is not always the same as the real output with your product. Pack stability, operator loading, film changeovers and downstream packing all affect actual throughput.
Quick answers
Shrink wrapping line specification FAQs
What does a shrink wrapping line include?
It can include product infeed, L-sealer or sleeve sealer, heat tunnel, conveyors and outfeed packing areas.
Can the line connect to existing equipment?
Yes, but conveyor height, product spacing and control handshakes need to be checked.
What details are needed for a line layout?
Pack dimensions, output, available floor space, operator positions and utility locations are important.
Related machinery
Useful next pages
Heat tunnels
Match tunnel aperture, airflow and conveyor speed to the film and pack.
Buyer guide
Check pack dimensions, film type, speed and site utilities before quoting.
Define the line response when packs cannot leave
Ask how the proposed line handles a blocked discharge or a pause in downstream packing. The review should identify packs waiting before sealing, between the sealer and tunnel and after shrinking. Record the intended controlled response for each position using the supplier’s operating and safety instructions.
Keep the physical layout and controls discussion connected. Show where packs accumulate, where operators work and how a restart returns to the agreed spacing. A successful steady-running demonstration should be supplemented by the normal interruption conditions expected in the installation.
- Transfer ownership
- Identify who provides each conveyor, sensor and control interface. Include the agreed handover height and direction in the layout.
- Pack recovery
- Define how packs affected by an interruption are identified and checked before joining accepted output. Record who is authorised to make that decision.
Can the tunnel simply follow the upstream speed?
Confirm the proposed control relationship with the machine supplier. The required shrinking conditions and interruption response must remain appropriate for the actual film and product.