There is no doubt that ETFE film is an excellent material for greenhouses.
In addition to being used in large buildings - for example, the Bird's Nest, the main venue of the 2008 Beijing Olympic Games, and the Water Cube, the swimming pool - ETFE film is also widely used in agricultural fields, such as animal husbandry, breeding, and greenhouses for growing flowers, vegetables, and fruits.
There are two main types of greenhouses that use ETFE film, one is botanical gardens, zoos, and the other is agricultural greenhouses.
ETFE agricultural film for greenhouse
In 1997, ETFE film was the covering material used in the farm greenhouse in Changping District of Beijing. The greenhouse mainly raised and planted Japanese muskmelon, strawberry and colored bell pepper.
Because of its full-band optical fiber transmission, ETFE film is especially conducive to infrared absorption of plants, so as to offset low-temperature radiation at night and help crop growth. In Japan, almost all planting greenhouses will use ETFE film.
In 2001, the United Kingdom established the world's largest ETFE film structure building - Eden greenhouse, which brings together almost all the plants in the world, more than 4,500 species, 134,000 flowers and trees, the greenhouse is composed of four dome-like buildings connected, covered with ETFE transparent film structure cover plate, it can improve the survival efficiency of rare plants.
ETFE agricultural film advantages
1.high light transmittance
Compared to other traditional materials such as glass, acrylic or polyethylene, ETFE film combines the total transmittance of direct and diffuse light, resulting in a higher transmittance of 90-95%, whether single or double, providing more transmittance even in the absence of sunlight, and protecting against UV radiation harmful to plants. Keep plants healthy and safe.
2.Low maintenance cost
ETFE film has non-viscous surface characteristics, dirt, dust and debris will not adhere to it, and will be washed away by rain, so as to achieve self-cleaning effect, reducing the time and cost of cleaning and enclosure. In addition, snow and ice on the film is also easy to slip, so in the cold winter can also bring more light to the room, with a high cost performance.
3.long service life
Strong resistance to ultraviolet radiation, coupled with excellent self-cleaning ability, makes the service life of ETFE film is 8 times that of traditional polyethylene covering, long-term exposure to environmental pollution, ultraviolet light, harsh chemicals or extreme temperature changes for more than 25 years, ETFE film will not appear any signs of deterioration and performance decline.
4.high tensile strength
Although ETFE film is elastic, it is still structurally resistant, flexible and tough, helping to reduce the impact of strong winds and protect the greenhouse structure.
5.strong self-healing ability
ETFE film has an amazing self-healing ability to restore a dent caused by rubble or hail in just a few hours, or even less, and it does not fail in extreme climates.
6.excellent fire resistance
The flame retardant rating of ETFE film is B1, the highest rating in the industry, and if a fire occurs, it will play a self-extinguishing and flame retardant characteristics to avoid the spread of fire in the greenhouse.
