How to choose the covering film of the multi-tunnel greenhouse
For the entire greenhouse industry plastic film as one of the covering materials, it occupies a very large market. In terms of the total amount of use is much larger than the total amount of glass and sunlight panels, the key factor is because the price of the film is cheaper, which is more in line with the public's vegetable farmers. However, plastic film has its detailed classification in the market, and different films also have its scope of use. At this point, there is a little relationship between the mode of root planting and the type of greenhouse, and it is not simply caused by thin film factors.
1. Classification of greenhouse films
Application of mainstream film types in the greenhouse market
Nowadays, in greenhouse construction, that is, the films that are often used are mainly EV films, PE films and PO anti-drip films. These three films are the most commonly used films in the market at present, and mainly adapt to different application scenarios. For this, there is a certain relationship between the price and service life of the film, and the other is the type of greenhouse. The type of greenhouse is different, that is, its planting time and sustainability are related.
2.PO membrane solar greenhouse
The solar greenhouse is also known as the warm shed, which itself belongs to the unique greenhouse type in the north, mainly for anti-seasonal planting in winter, and the summer is the recuperation period of the solar greenhouse. For the solar greenhouse construction to choose the kind of film, it is in the solar greenhouse I have built, the type of film can be selected is the most, but on the whole is basically PE film or PO anti-detol film, but between the two films, from the current market selection is basically based on PO anti-detol film. Because the anti-detol film is more conducive to the planting requirements in the greenhouse in winter, because the detol phenomenon in the greenhouse will cause certain diseases to the crops in the greenhouse, which is why the choice of PO anti-detol film factors. There is a problem of film service life here, PE film is about 1-2 years, and PO film is about 3-5 years, which is also in the absence of human damage.
3. What kind of film is used for multi-span greenhouse
For this thin film greenhouse it is a very special type of greenhouse, because the circular design of the large roof is very different from the triangular roof design of the multi-span greenhouse. Because of the structure of the arc roof of the membrane multi-span greenhouse, it determines that the top must choose the installation of plastic film, and the choice of covering materials on the vertical surface is roughly divided into two types, mainly plastic film and sunlight board, but most of them are mainly plastic film. And its roof area is generally relatively large, it will choose PO anti-drip film.
The difficulty of installing the multi-span greenhouse film is related to the thickness of the film
In the choice of film, there is also a key factor is the issue of installation, which also leads to your choice of film type. In addition, its service life has a little relationship with the thickness of the film, and the service life of the thin film is certainly not longer or stronger than the service life of the thick film. Film installation is mainly considered the difficulty of the problem, that is, the problem of causing the cost of construction personnel, at this point should be very easy to understand.
4. Film thickness
Purely from the film type, EV film, PE film and PO film, they are the same thickness of the case, PO film transmittance is the highest, in this point is undoubtedly. The thickness of its door is generally 8 wires, 10 wires, 12 wires and 14 wires, of which 8 or 10 wires are most commonly used, especially in spring and autumn greenhouses and solar greenhouses. However, the spring and autumn greenhouse is basically based on EV film, PE film is also partly used, and the solar greenhouse is basically the use of PO anti-dettol film, because the humidity of the winter solar greenhouse is relatively large, the film is easy to produce dettol phenomenon, but also the reason why the choice of PO anti-dettol film factors.
