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.
Indirect plate making method: the indirect film is first exposed, hardened with 1.2% H2O2, developed with warm water, and dried to make a strippable graphic negative. During plate making, the adhesive film surface of the graphic negative is closely attached to the stretched screen, the adhesive film is tightly attached to the wet screen by extrusion, the film base is removed, and the screen is dried by wind. Process flow: 1. Stretched wire mesh - degreasing - drying. 2 Indirect film - exposure - hardening - development - fitting - drying - revision - blocking. 3 Straight mixed plate making method: first, paste the photosensitive adhesive layer on the screen frame with water, alcohol or photosensitive adhesive, dry it with hot air, remove the substrate of the photosensitive film, and then print the plate. After developing, the screen plate is made.
It was by Guangdong special PP ribbon With this performance, silk fabrics are more suitable for direct contact with human skin. Therefore, we can directly wrap a chic garment with silk scarves in the hot summer, which is not only beautiful but also comfortable. Silk not only has good heat dissipation performance, but also has good warmth retention. Its thermal insulation is proud of its porous fiber structure. There are many tiny fibers in a silk fiber, and these tiny fibers are composed of even smaller fibers. Therefore, special PP ribbon Manufacturer In fact, more than 38% of the seemingly solid silk is hollow. There is a large amount of air in these gaps, which prevents the heat from radiating, making the silk very warm.
The unused ones from the knitting production line are called. The strength, width, thickness, elongation and stiffness described above are all measured on the knitting production line. The data measured on the knitting production line are called data. The safety belt installed in the car should be worn by the passengers after they get on the car. The use process is an aging process, and its strength will decline. In order to ensure that the safety belt can effectively protect the passengers before the vehicle is scrapped, the strength of the webbing shall be measured after simulating the working conditions. This strength is called the strength after the environmental test. After the environmental test, the strength includes light treatment, low temperature treatment, high temperature treatment, immersion test and wear treatment.
Here are some examples of the production process of radio lanyard, toy lanyard, flashlight lanyard and camera lanyard. 1. Wholesale of webbing: nylon, pp, polyester and high elastic cotton are generally used to make lanyards, and the general specifications are 4mm, 5mm, 6mm, 7mm, 8mm, 10mm, 12mm, 16mm, 20mm and 25mm wide. 2. Accessories: general accessories include metal clasps, certificate clips, etc., and plastic ones include aircraft clasps, plug buckles, safety buckles, etc. 3. Assembly: first print, cut according to the specified size, add string, plastic buckle, glue or press metal sheet, and then package. After inspection, a lanyard can be shipped in this way.
It is widely used. Xiaobian will briefly introduce some problems, hoping to help the wholesale friends of selvedge webbing. Main materials: nylon webbing, nylon webbing, cotton webbing, polyester webbing, pp webbing, bamboo fiber and other production processes: textile is a traditional industry in China with a long history. As early as the Tang Dynasty, Chinese textiles have crossed the vast ocean to benefit the world. Today, the textile industry is still a strong industry in China.
