What are the common types of agricultural plastic film? How to choose an application?

In modern agricultural production, plastic film is a very common agricultural material, the emergence of plastic film has brought great convenience to the agricultural production of farmers, but there are many kinds of plastic film, and the use of plastic film is also different. So what are the common types of agricultural plastic film? How to choose an application?

I. types of common agricultural plastic films

1. Impervious membrane

Impervious film, also known as waterproof film in many areas, has good heat resistance and cold resistance, toughness, high strength, good extension performance and other advantages, and is often used in anti-seepage projects, such as artificial lakes, landfills, tailings treatment stations.

2. Geomembrane

It is a kind of polymer chemical flexible material, which has the advantages of corrosion resistance, low temperature resistance and good frost resistance. It is often used in landfills, sewage or waste residue treatment sites, river embankments, lake dams, tailings dams, sewage dams and reservoir areas to prevent seepage.

3. Greenhouse film

Greenhouse film generally refers to plastic greenhouse and greenhouse plastic agricultural film, covering greenhouse film can provide crops with good temperature, humidity and light quality climate environment, can effectively control diseases and insect pests and reduce the impact of natural disasters, and improve crop yield and quality.

4. PO thin film

It has good transparency, low haze, high transparency, super tensile strength and anti-tear strength, and mainly acts on the outer covering film of the greenhouse.

5. Black plastic film

The low light transmittance can effectively prevent the evaporation of water in the soil and inhibit the growth of weeds. The black agricultural film is the best for cultivating summer radish, Chinese cabbage, autumn cucumber and late tomato in the plot with serious weeds or in high temperature season.

6. White mulch

White plastic film, also known as ordinary plastic film, has a light transmittance of 90%. It is widely used to increase temperature, store water and preserve soil moisture in spring. in addition, it plays a certain role in improving soil microbial activity, soil organic matter content and soil improvement.

Second, how to choose the application of plastic film?

1. Plastic film in greenhouse

The plastic film has heat preservation property. After covering the film, the turbidity in the greenhouse will increase with the increase of the external temperature and decrease with the decrease of the external temperature. And there are obvious seasonal variation and large temperature difference between day and night. Therefore, the main production seasons of the greenhouse are spring, summer and autumn. The growth temperature of the greenhouse can be kept at 15-30 ℃ by heat preservation and ventilation. Should be decided according to the planting products, not the thicker the plastic film, the better, or depends on the specific material. In general, the film is easy to absorb water vapor and condenses into water droplets on the film. During the use of the film, the film is "aging" due to high temperature, low temperature and the influence of ultraviolet rays from the sun. After aging, the light transmittance of the film decreases, and even loses its use value. Therefore, the plastic film covered by the greenhouse should be temperature-resistant and anti-aging, so as to enhance the light in the greenhouse, increase the temperature, and prolong the service life of the plastic film.

2. Blister film

For door panels and mobile phones, the thinner the better, because the general film is mainly covered with glue directly on the surface of the plate at room temperature and pressure, this kind of operation is relatively fast, but after a year or two, the film is easy to fall off. The pvc film is different, it is the application of a special vacuum film press attached to the surface of the plate at high temperature, so it is not easy to fall off. Pvc is completely non-toxic and tasteless, and there is no irritation to human skin or respiratory system. For those who are allergic to wood and paint, furniture or kitchen utensils packaged with pvc film are very suitable.

3. Fresh-keeping film

There is no special requirement for the thickness of cling film, but when choosing cling film, we should be careful. Heating more cling film of some materials will produce harmful substances, which will do harm to the human body.

4. Aluminized plastic film

Mainly used for medicine, food and other sealed packaging, the thickness has strict requirements, to a certain amount of medicine and food certificate, to ensure the safety and health of packaging products.

The above is the introduction of plastic film, plastic film has a wide range of uses, and the thickness selection needs to be targeted according to the current use of each product. In recent years, with the change of production demand of agriculture and animal husbandry and the continuous progress of science and technology, the demand for plastic film is getting higher and higher.

With regard to the wonderful pictures and texts and popular comments on plastic film, you may be interested in the following recommended contents of Nongxun. Welcome to read.

Recommended reading: how much is the plastic film per square meter? A brief introduction to the characteristics of Agricultural plastic Film

Agricultural products you may be interested in: national plastic film supply