The basic process flow of knitting is: bleaching and dyeing - weft rolling - weaving - off machine cutting - packaging. Since 1960, many technical innovations have been carried out on the knitting machine, mainly including the enlargement of peach plate diameter, the installation of an automatic stop device for breaking rubber bands, and the replacement of iron ingots with nylon ingots. The improvement of these equipment has increased the vehicle speed to 160~190 rpm, doubled the stand rate and greatly improved the product quality. In 1980, SD-81A and B rubber ingot belts were developed, which are soft, light, thin, firm, with small elongation, small impact force, short and flat joints. At the beginning of 1990, the trial production of car seat belts for Santana cars was successful. After more than two years of research and trial production, the product quality reached QC49-92 and TL-VW470 standards.
Xiao Bian always believes that any backpack and webbing factory needs to constantly promote safety in production. In addition to conventional production safety and personal safety of employees, fire prevention should be an important part of this safety. Gongzhuling special Woven belt The industry is a flammable industry, because a large number of various yarns and finished webbing products stacked in its workshops are flammable, its safety is directly related to human life safety. Therefore, Gongzhuling Woven belt manufactor The important thing for enterprises is how to prevent fire. In the past two years, there have been fires in many ribbon factories across the country, which has caused huge property losses to enterprises. The frequent occurrence of fires in the ribbon industry has also sounded a safety alarm for us. The safety of the company is also closely related to the employees. As a member of the company, fire prevention should start from self. Do not smoke in the factory. If you want to smoke, please go to the specified smoking area. Don't throw cigarette butts everywhere, let yourself be a part, and protect our safety together.
The tensile strength after light treatment, the natural light shines on the bag webbing through the window, causing aging and reducing its strength. According to the working conditions, a lighting equipment is designed, which is equipped with representative strong light and is exposed to the light for a specified time. After lighting, pp webbing needs to be subjected to standard temperature and humidity treatment, and then to tensile test to obtain the tensile strength after lighting treatment. After soaking, the tensile strength of the safety belt installed in the car will absorb the moisture in the air, and sometimes it will be soaked by some liquid, so the immersion test is required. At room temperature, fully immerse in distilled water with a small amount of wetting agent for a specified time, and then take out the soaked pp webbing from the water to complete the tensile test within 10 minutes. The tensile strength of soaked pp webbing was obtained.
As an industrial product, it also has its own standard service life, which determines the length of our actual use of webbing. Generally, there are two kinds of situations at the end of use. One is the problem of quality or external damage within the service life, so it can no longer be used. The other is the problem of natural wear and fracture, which is natural damage. It is also inevitable. Today we will talk about the life span in detail. How long is the life span?
