Specification guide

What size L sealer do I need?

The correct L sealer size is driven by the largest pack you need to wrap, the film centre-fold width, the sealing aperture and the shrink tunnel opening. This guide helps buyers prepare the measurements Lancing UK needs before specifying a machine.

What size L sealer do I need?
What size L sealer do I need? from Lancing UK.

Key checks for what size L sealer do I need

The correct L sealer size is driven by the largest pack you need to wrap, the film centre-fold width, the sealing aperture and the shrink tunnel opening. This guide helps buyers prepare the measurements Lancing UK needs before specifying a machine.

  • Largest pack dimensions in millimetres
  • Smallest pack dimensions for changeover check
  • Preferred film type if known
  • Target packs per minute
  • Manual loading or automatic infeed

Start with the largest pack

Measure the product length, width and height after any tray, sleeve, carton or label has been applied. The largest pack controls the sealing aperture and film width. Small variations matter because shrink film needs clearance around the product before it enters the tunnel.

Allow space for the film path

The pack must travel smoothly through the film folding, sealing and transfer area. A very tight fit can increase jams, poor seals and film drag. It is better to confirm the full size range than to size the machine only from a brochure dimension.

Match sealer and tunnel together

A good seal is only part of the result. The tunnel must be wide enough, high enough and long enough to shrink the film cleanly at the desired output speed.

Details to send for a useful recommendation

Product rangeLargest and smallest pack dimensions, product weight, photographs and notes about pack stability.
Production targetRequired packs per minute, daily volume, shift pattern and expected changeover frequency.
Film and finishPreferred film type if known, presentation standard, seal position and any retail requirements.
Site informationAvailable floor space, power, compressed air, access route, conveyor height and downstream packing method.

FAQ

What size L sealer do I need? FAQs

Can one L sealer run several product sizes?

Usually yes, provided every product fits inside the machine aperture and available film widths. Changeover and settings should be checked.

Is the tunnel size as important as the sealer size?

Yes. The tunnel controls final shrink quality, output and product clearance after sealing.

What measurement should I send first?

Send length, width and height for the largest product and include product photos if possible.