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What is the upper die step of PE stretch wrapping film?
PE stretch wrapping film is a kind of packaging material used for packaging and packaging. It has a strong stretching effect. A 1 meter film can usually be stretched to between 3 and 5 meters. It is usually used for packaging logistics and transportation. The main characteristics of the industry are environmental protection, easy to use, and not easy to fall off.
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How To Prevent The Aging Of Stretched Film?
The stretched film has a limited use time. As the use time increases, if you observe carefully, you will find that the product is slowly aging. At this time, the quality of the product will be seriously affected. And the destruction of the external environment (light, heat, wind and rain, etc.) is also increasing the progress of aging. Therefore, if we want to delay the aging progress of this product, we need to do some work. Here are a few items:
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