Ton bags allow us to come into contact with a wide range of products in our lives because any product needs to be packaged if it wants to be sold. Therefore, no matter what packaging material, after long-term use, it is easy to age and crack due to external reasons and internal factors. Of course, this means that we should change the packaging. Therefore, it is very important to prevent ton bags from aging. Many people do not know much about these contents. How to prevent ton bags from aging.
1. Ultraviolet rays are the main reason. Since ton bags are most exposed to sunlight in storage, transportation, and use, the ultraviolet rays in the sunlight have high energy and can promote the generation of free radicals and hydroxides, thereby causing the breakage of molecular chains in polypropylene, so ton bags show weakened tensile capacity, etc. In addition, the differences in local temperature and humidity must also be considered.
2. Photooxidation mechanism. The photooxidation mechanism of sunlight has two sources: one, direct sunlight, direct exposure to the sun; two, indirect sunlight, due to the reflection of water vapor, dust, etc. in the air; the two main sources of sunlight contain infrared rays, which will lead to a variety of oxidants and easy degradation of polymers. Don't underestimate the impact of this aspect. As time goes by, we will find that the aging of food-grade ton bags is becoming more and more serious.
