Functional greenhouse film application
Rose membrane multicolor membrane biological control membrane insulation, cooling membrane In recent years, with the rapid development of China's agricultural high-tech and the rapid promotion of greenhouse agriculture, the demand for plastic membranes for greenhouses has increased rapidly, but the general single-layer PE The film has low light transmittance, low elasticity, and low UV resistance. Although a single-layer EVA film generally has excellent elasticity, it is not resistant to high temperatures. Now, a new type of agricultural film - a multi-functional agricultural special-purpose three-layer PEP co-extruded agricultural film is quietly entering the market. The agricultural film is a co-extruded (PE+EVA+PE sandwich) three-layer composite film that overcomes and improves the disadvantages of the common agricultural film to preserve its original advantages and eliminate its shortcomings. In addition to additives such as anti-aging, anti-fog, and heat preservation, it also uses a new generation of high-tech polyolefin catalyzer Metallocence to make the film thinner and stronger. Compared with other common agricultural films, the product has a long service life (1 - 3 times), anti-drip time (3 - 4 times); good insulation effect, biological control and thermal insulation and cooling effect. Multi-functional agricultural special agricultural films include: gold, silver, copper and other multi-colored membranes, rose film and red fluorescent film dedicated for rose cultivation, biological control film, thermal insulation film, and other multi-functional agricultural shed for agriculture membrane. The product is popular with consumers because of its unique color and special features. It is no doubt the physical property of the three-layer multi-functional high-tech agricultural film used in the replacement of the conventional plastic film.
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1. Durability: As we all know, the aging of any material is caused by the irradiation (damage) and oxidation of the sun's ultraviolet rays, and the multipurpose agricultural film contains 15% to 35% more resistance than the general PE film. Ultraviolet stabilizers can therefore extend the lifespan of their use. Its maximum service life is up to 5 years, which varies depending on the climate in different regions. Specially formulated agricultural film can meet the needs of different customers.
2, light transmittance: light transmittance of up to 92%, and can be adjusted according to actual needs.
3, high refractive index: According to the actual needs of different refractive index of the production of special-purpose film. Generally divided into three types: no refractive index - below 25%; medium refractive index - between 25% - 40%; high refractive index - between 40% - 60% .
4, high temperature and strong wind: Because of both the temperature resistance of PE and EVA toughness, it can resist high temperature and strong wind.
5, dust: electrostatic treatment, so that the surface without static electricity, easy to absorb dust.
6, anti-ultraviolet radiation: multifunctional agricultural film using two UV formulations, so it has excellent anti-UV properties, the service life of up to 5 years.
7. Insulation: The multifunctional agricultural film can also be made into special heat-insulating film by special formula. At night, the insulation film can still maintain 75% - 85% of far-infrared rays, only 40% of the non-insulated film than ordinary - 45% of far-infrared can achieve better insulation effect.
8, anti-fog: multi-purpose special agricultural film contains a special additive, can reduce the surface tension of the film, allows the condensation of the mist into the water droplets, from both sides of the film to flow, without the formation of fog and dew, stay in Film on.
Introduce three kinds of multifunctional high-tech agricultural special agricultural film.
1, biological control film - TUV3798AF. The invention and application of greenhouse greenhouses have revolutionized agricultural production technology and provided an all-weather production environment, but its closed space has also become a breeding ground for pests and diseases. The biological control membrane is made of ultraviolet rays with a barrier wavelength of 375 nm or less, which allows general insects and butterflies to lose their motility and fertility, thus reducing the pathogens that they carry and infect.
2, thermal insulation film - TUV3758AF. All greenhouses are subject to a common problem that is the summer heat, resulting in the accumulation of heat in the greenhouse, so the phenomenon of high temperature not only caused an inappropriate working environment, but also impeded the growth of crops and increased the frequency of pests and diseases. The agricultural film uses the principle of reflecting a large amount of near-infrared rays (wavelengths of 700 to 1600 nm) to achieve the purpose of cooling. The highest temperature can be reduced by 5°C to 8°C. The best PAR (400-700nm) has a light transmittance of 91% and 72% of scattered light, resulting in an unshaded greenhouse that is conducive to crop growth. In winter, good insulation effect can still be achieved.
3, multi-purpose special film TUV3950AF. The film is suitable for use in temperate, cold and other short days, low temperatures and cold winter conditions. The variety has the following seven characteristics: (1) high heat preservation effect; (2) high light transmittance, increased sunlight in the greenhouse, enhanced photosynthesis efficiency, increased planting density, increased yield, and total light transmittance of up to 90 %; (3) Longevity; (4) Dust-proof surface treatment; (5) Inner drip-proof treatment, high content of UA stabilizer, which can achieve a service life of more than 5 years; (6) Oversized, widest Up to 16M, length up to 1000M, so no size need to be cut.
The multifunctional three-layer co-extruded high-tech agricultural film not only provides the crop with a place for sheltering wind, sheltering from the rain and keeping warm, but its main function is to be able to block the ultraviolet rays that impede the growth of crops, and it is beneficial to the growth of crops. Light (ie, PAR) enters. That is to say, through this function, the crops can be harvested earlier, the quality can be improved, and the yield can be increased, thereby increasing the production efficiency of the farmers.