Film manufacturer Flex Films USA has developed a new high-barrier metallised polyester film to reduce the risk of laminate failure.

Known as FlexmetProtect F-HMB, the film is available in an 8-50 micron thickness range and has been developed to address the demand for imparting high-barrier properties to laminated flexible packaging structures.

According to the company, the film is either untreated or corona treated on the other surface, while the specially treated composite surface features metallisation, resulting in metal adhesion or a bond strength greater than 1,200gf/in.

“The specialised surface treatment comprises materials with unique and enhanced properties thereby leading to much enhanced mechanical bonding.”

Flex Films USA technology general manager Dr Steven Sargeant said: “The adhesion of metal on BOPET base film is the sum of chemical and mechanical adhesion.

“Our proprietary surface treatment on the base film allows increased levels of chelation or reaction with the metal being deposited, thereby resulting in a much better adhesion profile.

“The specialised surface treatment comprises materials with unique and enhanced properties thereby leading to much enhanced mechanical bonding.”

The film offers high adhesion to metal and demonstrates improved damage resistance, which improves yields up to 4%.

FLEXMETPROTECTTM F-HMB is suitable for liquid packaging, stand-up pouches and barrier layer applications such as ‘Bag in Box’, chemical and pharma packaging, as well as hot-fill applications up to 80°C.

Flex Films USA is the global film manufacturing division of India-based flexible packaging materials and solutions company Uflex.

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