Speciality COATING

What Is A Heat Seal?

  • Thermoplastic material applied as a liquid coating, dried, tack, and block free.
  • Heat activated by to become soft and tacky.
  • Pressed to second substrate to make bond.
  • Cooled to room temperature to form bond between layers of substrates.

Components of Heat Seals

  • Defining resin or resins.
  • Tackifier resins or additives.
  • Lubricants, waxes, and slip modifiers.
  • Antioxidants and stabilizers.
  • Anti-blocking and heat stabilizing fillers.
  • Solvents and diluents.
  • Water, dispersants, pH control, and surfactants.


Solid Resin

  • Ethylene Vinyl acetate (EVA).
  • Modified EVA.
  • Modified Polyolefin Copolymers.
  • Modified Polyolefin Terpolymers.
  • Polyester (PET).
  • Modified PET.

Water Based

  • EVA and Modified EVA
  • Ethylene acrylic acid (EAA)
  • Ethylene methacrylate (EMA)
  • Ethylene methyl methacryalte (EMMA)
  • Polyvinyl alcohol (PVOH)
  • Ionomer
  • Acrylic
  • PVdC

Solvent Based

  • EVA - Ionomer
  • Vinyl - EMA
  • PET - EMMA
  • PVOH - Polypropylene (PP)
  • Acrylic - Polyamide

Markets Served

  • Food Pouches
  • Medical
  • Pharmaceutical
  • Peelable Lidding
  • Portion Packaging
  • Industrial
  • Instant Photograph
  • Agricultural Containers
  • Paper and Graphics
  • Frozen Food Cartons
  • In Mold Label

Market Trends

  • Specific performance targets for specific applications.
  • Higher peel and burst strength with strong seal through
  • properties.
  • Primerless HSC for foils.
  • Freezer to oven easy peel lidding.
  • Hot fill, aseptic, retort applications.

Heat Seals: New Developments

  • Waterborne high porosity Heat Seal Coating–Platform technology for varying porosities and seal activation temperatures.
  • Higher peel and burst strength with strong seal through
  • Heat seal coatings for shrink label applications