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Improved Cheese Packaging

Application Description

DuPont™ Bynel® and DuPont™ Selar® Team Up For Improved Cheese Packaging  

New Expeco® packaging (Extrusion à Perméeabilites Contrôlées) is a paraffin-free package that combines a Bynel® resin layer and a Selar® PA 3426 resin layer laminated on paper.  Bynel® is used as a bonding agent and Selar® PA 3426 is an amorphous nylon resin that provides an oxygen and carbon dioxide barrier, as well as optical properties. 
Cheese packaging

Benefits Gained
  • Optimized cheese maturation.

  • Full control of the water vapor/oxygen/carbon dioxide gas exchange.

  • Product preservation without affecting flavor.

  • Ability to fine tune barrier properties of the structure to comply with weight loss requirements.
Materials Selected and Why
Packaging converter, Lawson Mardon Morin, worked with DuPont to develop a permeable packaging film that would be ideally suited to soft cheese with surface mold.  Bynel® and Selar® were chosen for this unique application because in combination they give the packaging film specific barrier properties and optimize the cheese maturation.  Bynel® is compatible with a wide range of processes, including extrusion coating and features limited permeability to water vapor.  Selar® PA 3426 provides oxygen and carbon dioxide barrier, as well as optical properties.  In addition, its easy-to-extrude nature and thermoforming characteristics make it ideal for both film and sheet.
Packaging Converter:  Lawson Mardon Morin – Sarrebourg, France
End User:  Chamois d’Or Cheese from France

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