Flex Films develops unique polyester film with soft touch

By 09 Apr 2018

Flex Films, the global film manufacturing arm of Noida-headquartered Uflex, has developed an innovative bi-axially oriented polyethylene terephthalate (BOPET) film with a unique velvety and luxurious surface at its manufacturing plant in Elizabethtown, Kentucky in the US. The new soft touch film, FlexPet F-STF, exhibits exceptional scratch, heat and scuff resistance which has been a serious need-gap in the industry for flexible substrates. The surface is self-healing from most scuffing and is op

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In addition to a soft surface that is heat and water resistant, the film exhibits improved scuff resistance along with ultra-low gloss and robustness superior to commodity matte surface films

Dr Steven J Sargeant, general manager, technology at Flex Films, said, “If we scratch the surface of this film, it won’t be scratched. Soft touch is rendered through a robust surface coating, in combination with a proprietary inline anchor coating on the base polyester film. It is this combination which imparts unique properties of self-healing, toughness and durability along with the soft texture. This effectively increases converters’ yield as they generate less scrap and have less customer rejections or other associated issues.”

Vijay Yadav, business head, Flex Films, said, “The film has superior tactile properties. In addition to a soft surface that is heat and water resistant, the film exhibits improved scuff resistance along with ultra-low gloss (5-8 gloss units) and robustness superior to commodity matte surface films. All polymeric films tend to stick to themselves. This adhesion is termed as 'blocking'. In the case of our soft touch film, this isn’t an issue to worry about at all. Through the combination of base film and offline coating design, we have been able to avoid blocking, improve durability of the soft touch at high processing speeds. This in turn leads to higher production throughput. The film as you would see is thinner than previous low-quality solutions currently available in the market. This clearly decreases material costs of the end-use packaging at brands’ end.”

Anantshree Chaturvedi, vice-chairman and CEO, Flex Films International, said, “This film is FDA compliant for a range of uses making it further unique. It finds extensive use in luxury brand packaging, decorative packaging, labelling, graphic advertising banners, and high-end stationery products among others. F-STF film exhibits low gloss, excellent matte homogeneity with high haze (>90%) and very high contact (see-through) clarity. This means the film can be readily reverse printed. The surface maintains its soft and luxurious feel yet it is strong and durable enough to withstand the ensuing rigours of handling throughout the value chain. Tactile feel products have an anticipated CAGR of 12-15% and are thought to be the highest growth segment in flexible packaging spaces in the US. This is an encouraging opportunity that Flex Films is pursuing.”

Ashok Chaturvedi, chairman and managing director, Uflex, said, “This is a classic example of value-engineering, which addresses two rather dichotomous issues of maintaining a velvety soft surface texture of the BOPET film while simultaneously ensuring good tensile strength. This is one of the very many ways we keep enhancing business value for our clients globally.”


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