MASTERPAK, manufacturer of agricultural and horticultural films in Zouk Mosbeh, Lebanon, shares instructions with growers on how to set up and protect their greenhouse covers, in order to safeguard their agricultural products and greenhouses. These techniques cover the three PE film installation phases:
- Pre-Installation: Preparing for the film laying
- During Installation: Laying the film
- Post-Installation: Protecting the film
Pre-Installation Phase: Preparing for the Laying
- Prepare the structure by removing any sharp object that could damage the film during installation or use. The metal greenhouse frame should be galvanized class “C”, exempt from corrosion. Wooden greenhouse frame must be planed and sandpapered.
- Paint metal greenhouse frames in touch with the film with white water-based paint. Be certain that all painted surfaces are thoroughly dry before installing the coverings. In case clips are used, they must be rust-proof and painted.
- Avoid overheating and rust damage, use white plastified or plastic wires. In both cases, the plastic used should not be PVC based.
- Metallic structure should be designed according to “AFNOR NF EN 13031-1”.
During Installation Phase: Laying the Film
- The plastic film should be laid during soft weather (15˚C to 25˚C), preferably mornings or afternoons.
- The film should be stretched enough to avoid any untimely movement against the structures. Avoid over stretching.
- The film should be dug in at 25 cm from the greenhouse frame.
- When cross cladding, film overlapping must be in the opposite way of the dominant wind direction.
- Install the film the right way up for the anti-fog film. Refer to the mark on the film.
Post-Installation Phase: Protecting the Film
- Avoid rust during all the film usage period.
- Avoid direct vaporization on the PE film of any organic solvent, herbicide, pesticide, fungicide or fumigant.
- Chemical residues in film should not exceed the below:
- The tunnel must always be ventilated to prevent the film from overheating.
- The film should be regularly re-tightened in order to avoid fluttering and water bags.
- When stored, the film should be kept in its original packaging in a room at a moderate temperature away from direct sunlight, humidity and chemicals.
In addition to greenhouse covers, MASTERPAK produces a wide range of agricultural and horticultural films, such as: ground cover film, hale bale plastic, hydroponic gully film, low tunnel film, mulch film, protective bags for banana cultivation, silage film, soil disinfection film and water membrane.
MASTERPAK is a member of INDEVCO Flexible Packaging, a division of the multinational INDEVCO Group.
For More Information
Râny Sfeir, Agriculture Engineer
Zouk Industrial Zone
Zouk Mosbeh, Lebanon
Tel: +961-9-209 001 Ext. 3624
Fax: +961-9-209 002