TECHNOLOGY | MATERIALS SHRINK FILM Preventing corrosion and ESD
Cortec says that its latest shrink film can protect against damage from both corrosion and electrostatic discharge (ESD).
Its EcoSonic VpCI-125 ESD shrink
film (HP-UV) combines multi-metal corrosion protection with static dissipative properties. Users of the film can shrink-wrap small or large compo- nents as normal, to conform to the shape of the object. The film can replace conventional
rust preventatives such as oils and desiccants, allowing products to be used immediately without cleaning or degreasing. Sealing products in the film will protect against rust, tarnish, stains and oxidation.
SHRINK FILM
Helping bananas
to ripen Ineos Styrolution’s DK11 K-Resin has been used to make packaging film for better fruit preservation. It says that Chinese banana farmers have used it to control the ripening of bananas during transportation from Yunnan to other coastal regions in China. The tough, high clarity
film preserves the freshness, colour and integrity of the fruit while allowing to ripen organi- cally ripen, without the use of preservatives or ripener during transpor- tation.
It combines good
thermal stability with high gas permeability. �
www.ineos-styrolution.com
42 The film also protects components
from electrostatic discharge, and conforms to the surface resistivity and static decay requirements of MIL- PRF-81705 D (Static Dissipative
BARRIER FILM
Oxygen coating allows mono-material packaging
Printing ink specialist Huber has developed a surface coating that can improve the barrier properties of flexible packaging. Its Hydro-Lac GA
oxygen barrier coating is an alternative to multi- material barrier packaging, which makes recycling easier. “Conventional flexible food packaging often consists of several lami- nated film layers of different chemical natures,” said Ralf Büscher, senior expert projects for flexible packaging at Huber. However, packaging that consists of several plastics cannot be recycled at all – or only with great effort.” The new coating is
FILM & SHEET EXTRUSION | April 2022
Packaging Materials). It is safe to use and does not contain any harmful Prop 65 ingredients, says the company. The film has been tested and found
to be effective for up to two years of corrosion protection and one year of ESD protection. The corrosion inhibi- tors vapourise and condense on all metal surfaces within the enclosed space and diffuse to every area of the part – protecting the exterior as well as void spaces and recessed areas. The recyclable, non-toxic film
prevents ESD damage, and has no effect on optical properties – or on plastics that are used in the electronics industry. �
www.ecocortec.hr
applied between laminates of the same polymer – typi- cally polypropylene (PP) or polyethylene (PE) – to create mono-material barrier packaging. An OTR (oxygen transmission rate) of less than 10 cubic centimetres of oxygen per square metre and day can be achieved under industrial conditions
using PP, says Huber. “Through innovative solutions such as our new barrier coating, we can contribute to a circular economy together with our customers,” according to Lutz Frischmann, global product director flexible packaging at Huber. �
www.hubergroup.com
www.filmandsheet.com
IMAGE: CORTEC
IMAGE: HUBER GROUP
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