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How to deal with the problem of surface transparency of PET shrink film during customization?

Publish Time: 2024-04-11
In the process of PET shrink film customization, dealing with the issue of surface transparency is a crucial link. Transparency is not only related to the aesthetics of the shrink film, but also directly affects its effect in practical applications. Here are some of the main methods and considerations for dealing with surface transparency of PET shrink film:
First of all, the selection of raw materials is the key to affecting the transparency of PET shrink film. High-quality PET raw materials should have a high degree of purity and uniformity, avoiding impurities and particles that will reduce the transparency of the shrink film. Therefore, during the customization process, raw materials should be strictly screened to ensure they are of high quality.
Secondly, the optimization of production processes is also the key to improving transparency. During the processes of melting, extrusion, and stretching, it is necessary to accurately control parameters such as temperature, pressure, and speed to ensure that the PET raw materials are fully melted and evenly distributed to avoid defects such as bubbles and streaks, thereby improving the transparency of the shrink film.
In addition, adding a transparency agent or anti-reflection agent is an effective means to improve the transparency of PET shrink film. These additives can reduce the scattering and reflection of light on the film surface and increase the transmittance of light, thereby making the shrink film more transparent. However, it should be noted that the amount of additives used should be strictly controlled to avoid negative effects on other properties of the shrink film.
At the same time, control of the production environment is also a necessary measure to improve transparency. The production workshop should be kept clean and dust-free to prevent dust, impurities and other pollutants from adhering to the surface of the shrink film and affecting its transparency. In addition, production equipment should be cleaned regularly to keep it in good working condition.
Finally, post-processing PET shrink film can also improve its transparency. For example, through heat treatment or surface treatment, the stress inside the shrink film can be eliminated and the scattering of light in the film can be reduced, thereby improving its transparency.
To sum up, dealing with the surface transparency problem in the customization process of PET shrink film requires starting from many aspects. By optimizing raw material selection, production technology, additive use, and production environment control, we can ensure that PET shrink film has excellent transparency and meets the needs of practical applications.
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