BARRIER FILM | MATERIALS
Food aid: benefits of barrier film technology
Barrier film – which is critical to lengthening shelf life and preventing food waste – relies on a variety of plastics technologies, including special resins and processing techniques
While barrier films are typically made from multiple layers – making them hard to recycle – they are often lauded for their ability to extend shelf life and prevent food waste. Film specialist Wentus says it recently imple- mented strict Food and Drug Agency (FDA) specifications with a new packaging film. Its Wentopro SkinTight 20 UHT and UHT-M are used to package fresh fish safely, while maximising appearance. The high-performance skin films have high
strength, as well as good cutting and sealing properties, says Wentus. With an oxygen permeability of >10,000 cm3
/
(m2d bar), they meet the high US requirements for packaging fresh fish. The tight-fitting skin films, which are also suitable for direct freezing, prevent
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drip-loss and fix the fish firmly in its packaging. The gloss that characterises all films in the
Wentopro SkinTight range enhances the look, says the company. The UHT films also improve the taste, colour retention and smell of the packaged goods, said the company. Thanks to the microbiological processes taking place within the packaging, the skin films improve the shelf life of the packaged product and help to reduce food waste. Their high performance – coupled with thin
materials – reduces the overall use of plastics to save resources. In the UHT-M variant, the film is also adapted to
seal bottom webs or trays made of mono-PET or mono-PP – and supports the use of more recyclable packaging components.
� March 2023 | FILM & SHEET EXTRUSION 45
Main image: Wentus says it’s new barrier film meets strict Food and Drug Agency (FDA) specifications
IMAGE: WENTUS
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