The aging of the big bag is mainly caused by the ultraviolet rays in the sun. The ultraviolet rays degrade the polypropylene, so that the big bag has the appearance of low tension, chalking, and fading. Although the cost of a ton bag is not high, an ordinary ton bag is only tens of yuan, but the material carried is a thousand times or even ten thousand times the price. Therefore, the safe application of a ton bag is an extremely important problem. In order to transport the material safely, the usual aging life of large bags is required, reaching half a year or even more than one year, although the details depend on the needs of customers. On the basis of fully understanding the aging mechanism of large bags, the elements of aging and the standards of aging introspection, we can fully meet the needs of customers for anti-aging of large bags. How to improve the anti-aging of large bags:
1. It is necessary to fully understand the needs of customers for the anti-aging of large bags, such as application location, application time cycle, etc. Some customers will provide artificially accelerated aging test time and storage strength, and some customers even mark the growth of UV additives Quantity, according to the needs of customers, set the technical planning of products.
2. Stop planning the production formula. Due to the aging of the recycled materials, the molecular chain has cracked, the mechanical properties have been greatly reduced, and the application life has been prolonged sharply. It is necessary to use new materials for raw materials. To deal with the aging problems of large bags, it is necessary to increase the anti-aging additives according to a certain proportion. If the application of UV additives will make the dispersibility of the material difficult to handle, the composition technique is difficult to process, and the anti-aging masterbatch can effectively deal with this difficulty. For the color of the finished product, it is necessary to select color masterbatches of different light fastness grades according to the customer's request.
3. For the anti-aging masterbatch that improves the aging resistance of the ton bags, customers should pay close attention to inquiries and visits, although the increase is small, but the consequences are critical. It is necessary to make strict requests to the anti-aging masterbatch suppliers to adequately guarantee the quality of the products .
4. A complete tonnage bag includes base cloth, sling, spout cloth and sewing thread, all of which must meet the needs of anti-aging. If one has a performance, it will produce strict results. Many users have experienced similar experiences.