WINDBREAK NETS

It is known that the wind when it blows with frequency and intensity can cause sensitive damage to crops or greenhouses , it is therefore necessary, especially in particularly windy areas, to resort to windbreaks.
Utility of windbreak nets:

  • Attenuation of mechanical effects of wind.
  • Reduction of evaporation and perspiration of water from the soil.
  • Reduction of frosts caused by inflows of cold air and consequent savings in the heating of greenhouses.
  • Fume retention, harmful exhalation, salt and sand transported by winds.

The optimal net as windbreak barrier is the 50% type, which can protect for a distance of up to 8-10 times its height without creating turbulence and swirls (ex. high barrier 2 mtrs : 16 mtrs protected) If nets are also required to remove salt or other powders, 60 or 70 % thicker nets should be used.
Using networks too thick (ex.90%) is not recommended because they can create, over or downwind, whirlpools that can cause more damage than would have caused the original wind.

NET 50%
item O50 HDPE UV stabilized 0.28
Use:  windbreak, medium shading
50% wind reduction up to 8 times barrier height (ex. high barrier mtrs 2, 16 mtrs protection)
Colours (Shading): black (50%) – green (38%)
white (15%) – grey (33%)
Heights: mtrs 1 – 1,20 – 1,5 – 2 -2,5 -3- 4 -5 -6
Lenghts: mtrs 100-200 or on request

NET 70%
item O70 HDPE UV stabilized 0.28
Use:  windbreak, anti-drift treatment, dense shading
Wind protection (-50%): up to 5 times the barrier height
Colours (Shading): black (70%) – green (59%)
Visual shielding effect: medium
Heights: mtrs 1 – 1,20 – 1,5 – 2 -2,5 -3- 4 -5 -6
Lenghts: mtrs 100-200 or on request

reti frangivento

NET 60% 
item O60 HDPE UV stabilized 0.28
Use: Windbreak protection against sand and dust, medium shading
Protection from wind (-50%): up to 6 times the barrier height
Colours (Shading): black (60%) – green (47%)
white (16%)
Heights: mtrs 1 – 1,20 – 1,5 – 2 – 2,5 – 3 – 4 – 5 – 6
Lenghts: mtrs 100-200 or on request

CREASING
item CORD
Sewing on the edge of the nets of a cord made of HDPE polyethylene (diam. 4 mm) useful for a secure fastening and to lengthen considerably resistance and durability of windbreak nets.

Mounting tips and accessories

Arrange a series of poles in iron, cement or wood at a distance that will have to hold the height of the barrier and the diameter of the poles.

Space between the poles diam. 8/10 cm
– Distance for high poles from 2 to 2.5 meters: about 3 meters
– Distance for poles higher than 3 meters: about 2 meters

 

Fixing net
In the header poles fix the net by wooden splints or rubber profiles.

 

 

ffuni e cavi per impianti antigrandine

ZINC-ALUMINIUM STEEL WIRE
item FI4
Aluminium zinc coated steel wire diam. 4 mm – for ridge wire
1 Kg = 10 mtrs
Strenght: 980 N./ mm²
Average extension 4 – 5 %
Boxes: 50 -100 kg

Support cables
Place the wires or ropes in the side of the poles facing the prevailing wind at a vertical distance of 40/50 cm. Anchor the terminal poles with another inclined support.

Fixing net
Use a ring clamp to attach the net to the cables, at a distance of about 50 cm between the rings.
This system, in addition to being quick to execute, guarantees an excellent and lasting hold even over the years.

 

SPIROIDAL STEEL WIRE ROPE
item FU5-19 class AB 1 Kg = 8,4 mt
Spiral rope 19-wire galvanized steel
Boxes: 50 kg

 

 

Cable fastening to wooden poles
ZINC-PLATED STAPLE 50×40 mm
item CAM
U-bolted staple for fixing ropes and wires on wooden poles
Boxes: 5 kg or on request

PLIERS FOR RINGS
item LEG with automatic charging
item LEG2 with manual charging
Use: fastening of the nets on a wire or rope

RINGS FOR PLIERS
item LEGAN
Boxes: 1600 pcs

TENDER with double ring
item TEND2
For cables from diam. from 4 to 7 mm
FORGED CLAMPS
item MOR10
For cables from diam. from 7 to 8 mm
item MOR6
For cables from diam. from 4 to 6 mm