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Extrusion & Laminating

Fibers on a roller

As demand grows for more sophisticated packaging and materials, the use of extrusion and lamination processes is more important than ever. The desire for strong barriers, sealability, and structurally strong packaging means a need for stronger adhesion within the thin multilayer composite structures being created.

Corona surface treatment is the ideal solution for just this need. Many materials used in extrusion and lamination are low surface energy materials, making it difficult to bond them together. This technology works by exposing the surface of these materials to a high voltage current, creating ionized air and increasing the surface energy, massively increasing the material’s adhesion properties. This allows materials to be better bonded together, improving product quality and durability.

Corona treatment can be used on a wide range of substrates used in extrusions and laminating, including plastics, metals, and other non-porous materials. It is commonly used in the production of a wide range of products, including food packaging, medical packaging, and industrial packaging. Examples of materials which can benefit from corona treatment include:

  • BON
  • BOPP
  • EVA
  • Fiberglass
  • Foams
  • Foils
  • HDPE
  • LDPE
  • Paper
  • Paperboard
  • PET
  • PP
  • Textiles
  • 100% solids urethane-based adhesives
  • Acrylic-based adhesives
  • EB-curable adhesives
  • Polyurethane dispersion adhesives
  • PVDC-based adhesives
  • Solvent urethane-based adhesives
  • UV-curable adhesives

Corona treatment is a useful and often necessary process for improving the performance of extruded and laminated products. Besides improved adhesion, corona treatment for extrusion and lamination provides benefits like:

  • Enhanced printability, making it easier to print on the surface of the material.
  • Improved surface cleanliness, which reduces the risk of contamination and other issues that can impact product quality.
  • Improved surface uniformity, which can result in more consistent coating thickness and improved product appearance.
  • Reduced need for primers, which can reduce costs and simplify the laminating process.

Corona treatment is an invaluable tool for manufacturers in a wide range of industries. If you’re interested in more information about corona treatment stations from Pillar Technologies, don’t hesitate to contact us today. Our team will work with you to determine the best corona treatment configuration for your needs.