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Thermoplastics films have been used in the manufacture of release liners for many years. Filmic release liners have found many applications in a wide variety of industries and end-uses, where their properties may be more appropriate than a paper based release liner.

The majority of filmic liners are based on three families of thermoplastic polymers – Polyethylene, Polypropylene and Polyethylene Teraphthalate. However, there is enormous potential for customising both the polymers and the film production processes which has resulted in the proliferation of a daunting range of variants and properties to choose from.

Cotek offer a range of filmic release liners, based on the three families of thermoplastic polymers, to compliment the range of paper based release liners. They are similarly available with one or two-side silicone coatings and with a comparable range of controlled release properties.

A wide range of film thicknesses, colours and properties are available to suit the customers application, and most films can be backprinted or printed before siliconising.

What is polyester film lining?

To create polyester film, the process starts with molten polyethylene terephthalate. This is extruded onto a chill roll and then biaxially oriented by drawing. The film is then heat set under tension to prevent the form from returning to its original shape. The orientation of the polymer chains gives the film its high strength.

Here are Cotek, we have the capabilities to produce polyester film liners with varying performance differences. In general, polyester film liners can be created to withstand extreme temperatures of -70°C to 150°C. This makes it suitable for a range of industrial applications and ensures uniform performance under extreme conditions. It’s flexible, versatile and highly resilient.

Polyester film liners are most commonly used in the following applications:

If you’d like to find out more about the polyester film liners from Cotek Papers Ltd, get in touch with our friendly team today.

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