The aging of the ton bag is mainly caused by the ultraviolet rays in the sunlight, which causes the degradation of polypropylene, so that the pull force of the ton bag decreases, chalking, fading and other phenomena. Although the value of a ton bag is not high, an ordinary ton bag is only a few dozen yuan, but the material it carries is a thousand times or even 10,000 times the value. Therefore, the use of a ton bag is a very important issue. So how can we slow down the aging speed of the ton bag during the production process? The following ton bag manufacturers will take you to the specific understanding:
1. Structural planning
When planning the structure of the ton bag, it is stipulated in the relevant specifications that the strength of the waistband should be more than twice the strength of the base fabric, but in practice, this planning effect is not good, because the strength of the base fabric and the waistband are inconsistent, causing the base fabric to crack first. When designing, the waistband and the base fabric are made of the same strength base fabric material to avoid this problem.
2. Add additives to extend service life
In order to improve the anti-aging ability of plastic ton bags under sunlight, a certain amount of anti-violet agent and stabilizer should be added in the flat yarn drawing technology. According to the length of the use period of the ton bag (six months or one year), the increase amount is determined, usually between (0.1~3). Some companies add anti-aging masterbatches made of stabilizers, anti-violet agents and other additives, and the effect is also good.
The use of big bags determines the scope of use and the conditions of the items to be loaded when determining the structure. The aging resistance of the stitches and the effect of the seams on the tensile strength of the base fabric are all necessary considerations when manufacturing big bags. A complete ton bag includes base cloth, slings, material opening cloth and sewing thread, all of which must meet the requirements of anti-aging. If there is a problem, there will be consequences.