More than just thermal insulation strips: polyamide profiles for special applications

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  • Thermal insulating film replaces foam in profiles
  • From 100% recycled polyamide to fire protection
  • Ensinger introduces product classification system

The main task of an insulating profile, either made from polyamide or polypropylene, is insulation. But the requirements vary depending on the specific application. To meet the different needs, the company Ensinger offers a wide range of insulating profiles and has introduced a new product classification system for its Insulbar profiles used in aluminum windows, doors and facades.

Improved thermal insulation: film as an alternative to foam

In order to improve the thermal insulation properties, the company offers a special insulation technology: The use of Low-E Film (LEF), made of a special aluminium foil, applied to the flag of the thermal insulation profile reflects the thermal radiation between the inner and outer shell of the aluminium frames. The functional principle is similar to that used in a thermos flask, whose mirror-finish inner coating maintains the temperature over long periods as a result of reflection.

Insulbar profile from Ensinger

Insulbar LEF: This insulating profile uses a Low-E film which reflects thermal radiation. This provides optimum thermal separation of the outer and inner shells of metal frames used for windows, doors and facades.

LEF is a simple alternative to thermally insulating foam. When using insulbar LEF, the Uf values achieved are equivalent to those of thermal insulation profiles with foam, and in many cases even better. The rated emissivity of Low-E film corresponds to e = 0.03 (standards and directives: EN 12898 and EN ISO 10456). LEF is heat resistant up to 200°C, is able to withstand this temperature for up to 20 minutes and so permits powder coating in the finished assembly. Standard anodizing is also possible.

Long glass fibre reinforced profiles withstand high levels of mechanical stress

The Insulbar high performance series of profiles are capable to withstand high levels of mechanical stress and can be used wherever high loading capacities and rigidity are required. Alongside the glass fibre-reinforced profile (REG), the company also offers long glass fibre reinforced profiles (LGF) for even higher strength and rigidity, and suitable for facade press-on or glass holding profiles.

From 100% recycled polyamide to fire protection

Another profile system (RE) is made from 100% recycled polyamide and saves energy and resources. This is also confirmed by the Environmental Product Declaration, which is a major benefit when calculating the life cycle assessment of eco-certified buildings, according to Ensinger. The company also offers fire protection profiles (FS- Fire Stop) which are reinforced with continuous fibres, and have flame retardant and non-melting properties. Another polyamide profile system (ESP) features optimized electrostatic properties for easier powder coating. And a self-lubricating glass fibre reinforced profile system (LUB) can be offered for lock and bolt rods applications.

Main picture: Insulbar insulating profiles protect the mountain-top “Sphinx” restaurant on the Jungfraujoch from temperatures as low as -30°C and wind speeds of up to 250 km/h.

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