Super Therm Polythene (200 Micron) - Per Mtr

Sold Per Meter - Enter desired quantity when ordering

In simple terms the diffused polythene sheet helps trap and preserve higher temperatures inside the structures for much longer - in heated structures, a 15-20% fuel savings can be achieved. A beneficial side effect of this added additive is that light entering the polytunnel is diffused - scattering light evenly throughout the structure.

For use with all crops where heat is important such as bedding/annual plants, propagation houses & over wintered vegetable production.

Thickness

Our Super Therm polythene is 800 gauge/200 micron and made up of 3 layers for outstanding strength and performance.

We use a 3 layer polythene made of exceptional quality material, which has a hugely beneficial thermal effect.

The common misconception about polythene is the more layers, the better the product. Unfortunately this isn't true. More layers simply hide poor quality films, which are sandwiched inside a very average inner and outer skin. The result of these multi-layer (often called 5 or 6 layer) films is a noticeably poorer all-round performance - the thermal effect is significantly decreased.

Optical Properties

Total Transmission of Visible Light

The amount of available light entering the polytunnel through the film. Measured as a percentage of total light.

Super Therm = 90%

Diffusion

The scattering of direct light entering the polytunnel ensuring no shadows, so all plants receive equal light. Measured as a percentage of total light.

Super Therm = 30%

Thermal Effect

A pocket of additives within the layers of the film that ensure and maintain a stable and optimum temperature within the polytunnel, especially during the night when it is colder.

Super Therm = 85%

Mechanical Properties

Strength at Break

The load on a tested sample when it breaks. This is expressed in Pascals or MPa.

Super Therm = MD24/TD23

Elongation at Break

The strain on a tested sample when it stretches. This is also expressed in Pascals or MPa.

Super Therm = MD920/TD920

Creep

As the weather changes becoming hotter or colder, so the Polythene expands and contracts. Creep is the terms used to express this.

Super Therm = 5

Dart Test

A test to measure the impact strength on a test piece of plastic, using a weighted falling 'dart'.

Super Therm = 5

Warranty

Although guaranteed for 7 years against its biggest threat of sunlight degradation, when fitted correctly, it is not uncommon to hear our polythene covers have lasted in excess of 10 years.

Please note - to help identify the polythene type and validate the guarantee, a series of numbers and letters are intermittently printed on the polythene sheet. The printing will appear approximately 1m from the side which will normally be buried into the ground or trimmed off.