Polyvinyl chloride ordinary film is made of polyvinyl chloride based resin. High temperature resistance, sun exposure, better insulation at night than polyethylene film, anti-aging, light mist, tear and break, adhesives available, easy repair. The new film has good light transmission, a long time on the surface of the film that is sticky, hard to clean dust and difficult to clean, reduce light penetration, and poor low temperature resistance, low temperature embrittlement degree of -50 °C, hardening degree of -30 °C. The membrane is more suitable for areas with small wind and sand and low wind and sand, and is particularly suitable for use in northern regions where nighttime heat preservation is required.

Polyethylene Ordinary Shed Film The film has a good light transmission, and the new film has a light transmittance of about 80%. The light absorption is weak, and there is no phenomenon that the polyethylene film is dusty (sticky) due to precipitation of the plasticizer. Low temperature resistance, low temperature embrittlement of -70 °C, still maintains flexibility at -30 °C. The proportion of light, 0.92 grams per cubic centimeter. Poor insulation performance at night, not light, use cycle of four or five months, does not apply to high temperature season coverage. It can be used for early spring and late autumn late cover cultivation, and it is not easy to bond after tearing.

Polyethylene longevity film is made of polyethylene as a base resin, and after adding a certain proportion of UV absorbers, anti-aging agents and antioxidants, it is blow molded. The service life is 2 years.

Polyethylene non-dripping and longevity film is made of polyethylene as the base resin, and is added with an anti-aging agent and a non-dripping additive. The use period is up to 2 years without condensation. Can adapt to a variety of shed type selection, but also in the greenhouse and greenhouses when the two curtain covering.

The polyethylene dimming (light conversion) film is made of a low-density polyethylene resin as a base material, and a light conversion agent is added to blow the film. The film can convert the ultraviolet light in the natural light into red light and infrared light, increase the photosynthesis utilization of the plant, and indoor air temperature and ground temperature. The film has the characteristics of longevity, aging resistance, and good light transmittance. The light transmittance is above 85% and the service life is more than 2 years. The effect of increasing the temperature under low light is not significant. Polyethylene light adjustment film is mainly used for hi-temperature and hi-light crops. The shed can be buckled in advance, the temperature in the shed can be high, it is advantageous to plant in advance, and attention should be paid to temperature control after planting. Due to the high temperature inside the shed, it can induce leggy and downy mildew. Therefore, the amount of watering should be controlled in management to avoid over-watering at one time, and small watering should be used. In addition, pay attention to spraying pesticides in advance to prevent downy mildew and Other diseases.

The multi-functional film is based on polyethylene as a base resin, adding a variety of additives, such as no drops, heat-insulating agents, anti-aging agents, etc., and using a film with multiple functions such as longevity, no drip, heat preservation, and multiple functions at the same time. . In the processing technology, one type is to mix the base resin with various additives and blow it into a film. Another composite membrane, such as a trifunctional composite membrane, an inner layer of non-dripping agent, a middle layer and an outer layer of an ultraviolet absorber, is blown into a multi-functional composite membrane. The use period is more than one year, the light transmission is good, the temperature rises quickly in the sunny days, and there is insulation at night. It is suitable for use in large, medium and small plastic sheds, greenhouses and the use of two curtains. Due to its thinness, the unit weight of the film covers a large area.

The diffuse reflection film uses polyethylene as a base resin to add a certain percentage of solar diffuse reflection crystal nuclei. When the direct rays of the sun pass through this film, they are transformed into flat rays of light under the effect of diffuse reflection crystal nuclei and are evenly shot into the greenhouse. In all parts, the direct light transmittance can be reduced, the high temperature peaks in the shed can be reduced before and after noon, and the high temperature damage to crops can be reduced, which is beneficial to the uniformity of plant growth in the shed, and the night insulation performance is good.

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