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.
What does Dandong Guangwei Textile Weaving Group explain? Generally speaking, chemical fiber is added to cotton, a kind of polyester material. The invention of polyester and cotton has promoted the great progress of human textile, and it also has many advantages. Polyester cotton increases the tenacity of pure cotton yarn, which is not easy to break, and has elasticity! Some advantages of pure cotton, such as hygroscopicity and moisture retention, are mainly aimed at garment accessories. Some are not important to the fabric, and some are even shortcomings; The advantages of polyester are exactly what the ribbon yarn needs.
The printing is in the passenger compartment to enhance the matching and coordination with the color in the cabin. The binding ribbon printing will be dyed into various colors. People always hope that the color dyed will not fade within the specified time. Therefore, the belt has a specific color fastness test. The wrapped webbing belt is exposed to light, and like other substances, it will fade. The wrapped webbing has this characteristic, which is called light color fastness. In this test, the webbing is placed under representative strong light and exposed to the specified time. Then compare the bag webbing with the standard color card to evaluate a fading grade.
Webbing wholesale 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. Webbing wholesale 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 customized Webbing Water immersion test is required. At room temperature customized Webbing 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.
The moisture in the air may cause spots in the car. When this kind of webbing contacts the clothes of passengers, the spots and colors on the luggage webbing will also be transferred to the clothes. Therefore, it should have anti spot fading characteristics, which is also called spot color fastness. The spot color fastness test includes multi fiber test and filter paper test. The multi fiber test is to clamp a sample of tissue belt between two layers of colored cloth. Immerse the mixed colored cloth into the vessel with distilled water and completely wet it. Then squeeze the water out of the extruder, and then clamp these colored cloth wrapped with selvedge webbing into the plexiglass sheet, put it into the sample holder, and lock the sample holder. This rack is placed in a high and low temperature box at a certain temperature, and after reaching the specified time. Take out the sample and hang the colored cloth.
Ink printing. At first glance, ink is not very different from glue, but when glue is printed on smooth fabrics, such as wind clothing, the color fastness is generally poor, and it can be scraped off with a nail, but ink can overcome this shortcoming. Therefore, when making windbreaker, it is usually printed with ink, with bright color and vivid image. There has been a wave of head prints in the market some time ago~I don't know if you have noticed it, then the clear and ultra realistic printing can only be printed with ink in general~Sometimes you can sprinkle gold powder and silver powder on the ink, and feel that the decoration effect is better.
