Effect of matte technology on the transparency of TPU membrane
TPU film, made of thermoplastic polyurethane as the base material, is widely used in packaging and electronic product protection and other fields with high flexibility, strong wear resistance and good weather resistance. The frosting process is often used to optimize its appearance and functionality. So, what impact does this process have on the transparency of the TPU membrane?
2025-06-13
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Effect of matte technology on the transparency of TPU membrane
TPU film, made of thermoplastic polyurethane as the base material, is widely used in packaging and electronic product protection and other fields with high flexibility, strong wear resistance and good weather resistance. The frosting process is often used to optimize its appearance and functionality. So, what impact does this process have on the transparency of the TPU membrane?
The TPU membrane structure is relatively light and thin, and there are two main methods for treating matte processes. One is to apply matte coating, that is, to apply a special coating containing matte particles on the surface of the film; the other is to emboss the process, and the concave and convex texture is pressed out on the film surface through a roller with a matte texture.
When light passes through the TPU film, under ideal conditions, the unmatted transparent TPU film has a flat and smooth surface, so the light can pass through efficiently, showing high transparency. However, after matte treatment, the particles or embossed concave and concave structures formed by the matte coating will scatter light. When the light that originally propagates parallel, when encountering these microstructures, the propagation direction is disrupted, and a large amount of light spreads around, resulting in a significant reduction in the light that penetrates the film and maintains the original direction. Intuitively, the transparency of the film is significantly reduced.
In practical applications, although the matte process reduces the transparency of the TPU membrane, the advantages it brings are also very significant. For example, the electronic product protection film, the frosted TPU film can effectively prevent fingerprints and anti-glare, bringing users a better visual experience; in the field of food packaging, the frosted TPU film can not only improve the texture and grade of the product, but also protect product privacy to a certain extent and cover up internal details.
To sum up, the matte process will reduce the transparency of the TPU film, but the unique performance and visual effects it brings make it still have irreplaceable value in many fields.
