Automatic L-sealer machines
For higher throughput carton and retail pack shrink wrapping.
Lancing UK shrink wrapping machinery
Automatic L sealer with shrink tunnel
A complete L-sealer and tunnel route for automatic shrink wrapping of cartons, boxes and presentation packs.
System layout
Why the sealer and tunnel must be specified together
The L-sealer creates the sealed film bag, but the final pack quality is made in the heat tunnel. If the tunnel is too small, too short or has poor airflow, the pack may wrinkle, burn, balloon or leave loose corners. For that reason, the sealing frame, film width, conveyor speed and tunnel specification should be selected as one system.
Typical use
Where automatic L-sealer tunnel systems work well
This route is commonly used for boxed food, cosmetics, printed items, stationery, e-commerce products, phone accessories and similar retail cartons. It is well suited where a tidy, transparent shrink wrap is needed without placing the product into a tray.
Specification checks
Key checks before purchase
- Maximum product length, width and height.
- Required seal position and finished shrink appearance.
- Film type, thickness and roll width.
- Output target in packs per minute.
- Available power, air and conveyor height.
Quick answers
Automatic L sealer with shrink tunnel FAQs
Is an L sealer always supplied with a tunnel?
For production use, yes, it normally needs a heat tunnel after the sealing stage to shrink the film tightly around the product.
What products suit an automatic L sealer with tunnel?
Boxes, cartons, books, printed matter, cosmetics, phone boxes and retail packs are common applications.
Can Lancing UK help with line layout?
Yes. Lancing UK can advise on infeed, sealer position, tunnel length, outfeed and available floor space.
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.