DuPont™ Selar® PT 4274 is being used by Flexo Manufacturing in the Philippines for gourmet flavored coffee in a bag. The 6-gram sachets, marketed by Holsum Foods, Inc., have a four-side seal.
Application Description
Selar® PT acts as both a barrier and a sealant film. It has heat-sealing properties comparable to LLDPE, but also provides excellent flavor and odor barrier and a moderate barrier to oxygen and moisture.
- Selar® PT provides greater adhesion to metal than BOPET, while offering comparable barrier properties for the same optical density.
- As the sealant, Selar® PT does not scalp flavor from the packaged product, or impart taste or odors.
- Excellent "dead-fold" properties, similar to glassine.
- High tear initiation and easy tear propagation. The notched packet combines package integrity and the customer convenience of easy, straight-line tearing.
A PET/adh/vacuum metallized Selar® PT 4274 structure replaced the previous structure of PET/PE/Foil/LLDPE. The new structure provides similar physical, sealing and barrier properties while using less raw material.
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