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.