Sealing Machines

Sealing machines are particularly versatile for the wrapping of solid products of small to medium dimensions. A sealing machine is able to use different types of film, making it amenable to various product packaging runs, without excessive maintenance requirements. 

Heat sealing, incorporating the use of thermoplastic film, is a key aspect of plastic sealing machine techniques. However, machinery for corking bottles, screw capping, and sealing machines such as crimpers and sewing machines all have uses for particular kinds of product packaging needs.



Automated packaging machinery, such as sealing machines, has brought countless benefits to the product packaging industry. Packaging sealing machinery brings with it significantly improved labour productivity on the factory floor, allowing workers to be elevated to less manually-focussed roles, remove them from potentially unsafe or toxic environments and improve general working conditions.

Sealing machines also ensure consistent packaging quality and hygienic conditions for products, eliminating hand contact which can contaminate the product. Packaging costs are reduced, as are storage costs for loose products (e.g. with compression packaging). Finally, the versatility of sealing machine equipment allows for the handling of specialised requirements which may vary from product to product.

Types of Sealing Machines

L-sealing Machine

The L-sealing machine is a particular kind of bag sealer which uses a thermoplastic film folded lengthways. The product is placed between the two halves of the film before the L-shaped sealing bar encloses the pack, which is sealed on three sides. An L-sealing machine is often used along with a shrink tunnel.

Side Sealers

Designed to wrap solid products of all sizes, side sealers can use either shrinking or non-shrinking films, and are amenable to the packaging of even irregularly shaped products. Side sealing machines are pretty low maintenance with excellent levels of performance and versatility.

Skin Packers

A thermoplastic film is placed over the surface of a cartonboard blank then heated to form a tight seal around the product, adhering it to the blank. Skin packing is mainly used for the packaging of electrical and small building products.

Tray Sealing Machines

Tray sealing machines are widespread, ranging from small units that perform sealing only, to automatic vacuum sealing and gas sealing machines (for example). Such machines are able to use a variety of types of tray alongside suitable materials. This enables their use across an array of product packaging needs.

Capsule Sealing

For pharmaceutical product packaging, capsule sealing is essential. Capsule sealing creates a tamper-evident seal over each individual pill/capsule, whilst also containing active pharmaceutical ingredients, preventing degradation ahead of use. Equally, some pharmaceutical products can be hazardous to handle (e.g. cytotoxins), so automating the packaging process with a capsule sealing machine reduces physical handling and keeps workers safe. Capsule sealing is also an inexpensive technique, with low impact on plant infrastructure. 


Search for Sealing Machinery Suppliers 

Access a full list of PPMA member companies who supply a comprehensive range of Sealing Machines. You can also view the list of companies that provide the following equipment:

Block Top Machinery

Clip Closing Machines

Corking Machines

Crimping Machines

Crown Capping Machines

Fusion Sealing Machines

Glue Sealing Machines

Induction Sealing Machines

Plugging Machines

Resealable Bag Machines

Ropp Roll-On Pilfer Proof Machines

Screw Capping Machines

Sewing Machines

Tape Sealing Machines

Twist-Tie Closing Machines

Ultrasonic Closing Machines

Vacuum Capping Machines

Common Terminology

  • Glue sealing
  • Bag sealer
  • Plastic sealing machine
  • Induction sealing
  • Tape sealing
  • Vacuum capping
  • Ultrasonic closing
  • Twist-tie
  • Flow pack
  • Electro-fusion
  • Tray sealing
  • Gas sealing
  • Thermoplastic
  • L-sealing machine
  • Shrink tunnel
  • Clip closing
  • Fusion sealing
  • Block top machinery
  • Corking
  • Crimping
  • Crown capping
  • Plugging
  • Screw capping