Heat Shrink Machine (L-Bar Sealer & Shrink Tunnel)

About Heat Shrink Machine (L-Bar Sealer & Shrink Tunnel)

A heat shrink machine wraps products in shrink film and passes them through a heated tunnel so the film contracts tightly around the item for protection, bundling and presentation. Common configurations are L-bar sealers with integrated shrink tunnels, sleeve sealers and chamber wrappers, used for boxes, multipacks, bottles, cosmetics, toys and industrial goods. It supports POF, PVC, PE, PP and PET films with adjustable temperature, conveyor speed and sealing size.

How to Choose

  • Film type - confirm the machine seals and shrinks POF, PVC, PE or PP suited to your product and market.
  • Sealing method - L-bar (full closure), sleeve or chamber, matched to product shape and throughput.
  • Tunnel size and heat - verify tunnel dimensions, heating zones and adjustable temperature fit your largest pack.
  • Conveyor type and speed - choose roller, mesh or silicone-rod conveyor and variable speed for stable output.
  • Product size envelope - check max packing width, height and length against your items.

FAQ

Q: What films can a heat shrink machine use?
A: Most machines handle POF, PVC, PE and PP shrink films; some also support PET. The choice depends on clarity, strength and your product's requirements.

Q: What is the difference between an L-bar sealer and a chamber wrapper?
A: An L-bar sealer cuts a sealed pouch around the product then shrinks it in a tunnel, ideal for continuous lines; a chamber wrapper shrinks the whole bag in one heated chamber, better for low volumes.

Q: How do I size a shrink tunnel for my product?
A: Measure your largest packed item's width, height and length, then choose a tunnel whose chamber and conveyor accommodate it with margin for film and airflow.

Q: Can heat shrink packaging be used for food?
A: Yes, POF and food-grade PE are commonly used to bundle food multipacks and protect trays, provided the film meets food-contact regulations in your market.