Foundite is a supply chain manufacturer that provides "materials + equipment" for laminated glass and safety glass production

New protective material for agricultural greenhouses: How to balance the light transmittance and impact resistance of TPU film?

In the process of modern agricultural development, agricultural greenhouses, as important facilities to ensure the stable growth of crops, have increasingly stringent requirements on the performance of protective materials. Materials with good light transmittance can provide sufficient light for crops, while materials with strong impact resistance can resist natural disasters and protect the safety of crops. As a new type of protective material, TPU film is gradually becoming a new favorite in agricultural greenhouse construction with its excellent balance between light transmittance and impact resistance. ​
From the essence of the material, TPU (thermoplastic polyurethane elastomer) has a unique molecular structure, which is the key to its ability to balance light transmittance and impact resistance. The TPU molecular chain segments are arranged regularly and have few internal impurities, so that light can be transmitted more smoothly when passing through the TPU film, reducing the scattering and absorption of light, thereby ensuring a higher light transmittance. Generally speaking, the light transmittance of high-quality TPU film can reach more than 90%, which is almost close to the light transmittance of glass, and can fully meet the light needs of crops, so that crops can also enjoy sufficient sunlight in the greenhouse and carry out efficient photosynthesis.

TPU film (2)
TPU film

In terms of impact resistance, the molecular chain segments of TPU film have good flexibility and elasticity. When impacted by external force, TPU film can absorb impact energy through stretching, twisting and recovery of molecular chains, disperse the impact force to a larger area, and avoid local stress concentration leading to material rupture. In practical applications, TPU film can easily resist the impact of hail, gravel caused by strong winds, etc., and even in the face of large hail, it can effectively buffer its impact and protect the crops in the greenhouse from damage. For example, in some areas where hail disasters are frequent, the internal crop damage rate of agricultural greenhouses using TPU film is significantly lower than that of greenhouses using traditional plastic film. ​

In order to further optimize the balance between light transmittance and impact resistance of TPU film, scientific researchers and production enterprises continue to innovate technology. On the one hand, by improving the production process, such as using advanced cast film production, the thickness of TPU film is made more uniform, internal defects are reduced, and thus light transmittance is improved; on the other hand, special additives and additives are added to the formula of TPU film to enhance the intermolecular force without affecting light transmittance, and further improve impact resistance. At the same time, the TPU film can also be surface treated, such as coating with a scratch-resistant coating, which can enhance the wear resistance of the film surface without affecting its light transmittance, so that the TPU film can always maintain good performance during long-term use. ​

The application of TPU film in agricultural greenhouses not only provides a good environment for the growth of crops, but also has environmental advantages. TPU film is a recyclable material. After being discarded, it can be professionally recycled to reduce pollution to the environment, which is in line with the concept of sustainable agricultural development. With the continuous advancement of technology and the gradual reduction of costs, TPU film is expected to be more widely used in the field of agricultural greenhouses, injecting new impetus into the high-quality development of modern agriculture, and becoming an important aid in ensuring crop safety, increasing yield and quality in agricultural production.

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Foundite is an optical grade TPU complete industrial ecological chain enterprise, with independent intellectual property rights from raw material granule synthesis to extrusion film forming to component application. The EVA film and TPU bullet-proof film produced by the company are widely used in ordinary architectural glass, decorative glass, bullet-proof and explosion-proof glass, high-end architectural safety glass and other fields....
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