Greenhouse films properties

PLASTIKA KRITIS has the know-how and produces films with different levels of diffusion, according to the specific requirements of each area and crop.

Crystal Clear are films with exceptional light transmission and low diffusion. They provide additional 3-5% of sunlight available in the area. Crystal Clear films are recommended especially for double inflated greenhouses and for light deficiency fragile crops in the early spring period.

Droplets formed at the inside surface of greenhouse films due to water-condensation have negative consequences on plant quality and growth, as they reduce light-transmission by 15-30% and increase the incidence of certain diseases

PLASTIKA KRITIS is manufacturing Anti-Dripping films that contain special additives which eliminate droplets and form instead a continuous thin layer of water running down the sides.

 Anti-dripping films, when used properly, offer the following benefits:
• More light in the greenhouse
• Higher crop yield
• Earlier harvesting
• Better quality of crop, higher commercial value
• Fewer diseases
• Reduced need for pesticides

In contrast to the traditional anti-dripping effect, permanent effect does not disappear through time. It is a substantial element built into the film structure.

Due to the fragile structure of an upgrade we recommend caution during a process of film installation.

Permanent anti-condensing effect functions only, if the roof tilt is min. 15⁰.

To allow the use of anti-dripping films, with all their benefits we have developed a special anti-mist function that reduces the formation of mist. It reduces formation of the mist that is sometimes formed during sun-set and dawn in greenhouses.

It provides additional light for plants and significantly improves growing conditions.

We offer special thermic films, containing a combination of EVA and Infra-Red additives skillfully structured in the layers of the films, which absorb the Infra-Red radiation and reduce heat losses during the night.

Thanks to special additive, we can offer our clients films, which are thinner and at the same time have incomparably higher mechanical resistance comparing to standard films.
Covering with reinforced mechanical resistance are especially recommended for facilities which are located in areas exposed to strong winds and in case of lower quality constructions.

UV stabilization (defined with a number of seasons) indicates a time, after which a film should be replaced. 
This parameter is calculated based on mean UV radiation load for a given climate zone.
6 months are considered 1 season in Poland. 
It is worth to comply with recommended replacement time since mechanical and light properties of films deteriorate over time.

PLASTIKA KRITIS offers UV-Open films that allow the full spectrum of UV-A & UV-B radiation to enter the greenhouse.

UV-Open films are beneficial for soft-fruit production (strawberry, raspberry and blueberry). It enhances color formation of red salads and certain varieties of roses. It helps to achieve more robust plants and better rooting.
Crop response for UV depends on variety and other factors of cultivation.

EVO2 delaminatable films are 7-layer films which are separated into 2 films by introduction of air between the layers, after the films has been placed and securely fastened on the roof of the greenhouse. This new method permits a serious gain of installation time and cost, while being safer for the installation crew. It also makes it possible to cover a double inflated greenhouse even in days with a certain level of wind.

Films designed for objects with higher chemical exposure. Especially with higher resistance to sulphur and chlorine.

Unique fusion of parameters that meets requirements of soft fruits.
Films are characterized by: large dispersion and at the same time high total light transmission, unique mechanical reinforcement thanks to use of metallocene and EVA (films designed for mounting with use of ropes). UHD films can be most often found in UV-OPEN version.

 Range of special disease control films, which contribute efficiently in "Integrated Pest Management" and help to reduce the usage of pesticides.

An important type of disease and insects control films is "UV-blocking" films, which absorb UV-radiation up to 380 nm, achieving:

• Reduction of the population of whiteflies, thrips, aphids and other insects in greenhouses, thereby also reducing the viruses which are vectored by these insects.

• Control of the spread of certain diseases (such as botrytis), by reducing the sporulation of the relevant pathogenic fungi.

• Growth promotion or retardation to cause elongation or dwarfing of the stems.

• Reduction of "blackening" of red rose petals, thereby increasing their commercial value.