Although the price of ton bags is not high, the materials they carry are thousands to hundreds of thousands of times their price, so everyone pays special attention to the quality of ton bags. For the safety of transporting materials, customers generally require that the aging resistance of ton bags reach half a year or even more than a year.
After a long time of use, ton bags will age to varying degrees. What is the reason?
Ultraviolet rays are the main reason. Since ton bags are most exposed to sunlight during storage, transportation, and use, the ultraviolet rays in the sunlight have high energy, which will promote the production of free radicals and hydroxides, thereby decomposing the raw material polypropylene of ton bags, resulting in reduced tensile capacity of ton bags, causing powdering and fading.
Photooxidation mechanism. The photooxidation mechanism of sunlight has two sources:
① Direct sunlight, direct exposure to the sun;
② Indirect sunlight, reflection of water vapor and dust in the air. The sunlight from these two sources contains infrared rays, which will cause various oxidants and easily degradable polymers. Over time, the aging of ton bags will become increasingly serious.
Temperature and humidity. Regional climate differences, temperature and humidity differences can easily affect ton bags. The higher the humidity, the more tides, and the less likely water is to evaporate, which will accelerate the aging of ton bags.
This phenomenon greatly limits the use of ton bags, so how to avoid aging of ton bags has become a concern for everyone. When using ton bags, pay attention to waterproof and moisture-proof issues. After use, they should be dried immediately.
Avoid contact with acidic substances during use. When transporting acidic substances, they need to be packaged separately to avoid direct contact with the outer bag of the ton bag.
When transporting or storing goods, avoid placing ton bags in direct sunlight to prevent long-term exposure to ultraviolet rays from reducing the tension of the ton bags.