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Film Coatings

PVDC (Polyvinyl Chloride)

  • Excellent moisture and gas-barrier properties.
  • Grease and oil resistance.
  • Common applications; commonly laminated or used as a coating. Known as trade name Saran.™

EVOH (Ethylene Vinyl Alcohol)

  • Excellent gas-barrier properties.
  • Loses barrier properties when exposed to moisture.
  • Holds nitrogen and carbon dioxide inside the package.
  • Prevents oxygen transfer inside the package.
  • Common applications; typically used in multilayer barrier films. Commonly paired with films like PE with a good moisture barrier. Used in food preservation for foods like fresh pastas where the bag’s atmosphere must remain constant.

MET (Metalized film)

  • Micro-thin deposit of aluminum onto poly film, which is vaporized into the film like a coating.
  • Highest level of moisture and gas-barrier properties.
  • Aluminum coating blocks light, including UV rays that otherwise cause product degradation.
  • Common applications; typically used in multilayer barrier films. Commonly paired with PET, nylon, oriented polypropylene to dramatically extends perishable products’ shelf life. Paired with polypropylene to resist oxygen, which turns product fat rancid.