Knitted fabrics processed by spinning nylon 6 chips have good elasticity and form no pills. In winter, its warmth and wearing comfort is much more than woven fabrics. In addition, the knitted fabrics have shorter processing procedures, less space, less investment, and operating costs, which is used in the processing of sportswear, underwear, socks, and outerwear. As a result it seems that it has a tendency to replace woven fabrics. However, it also has its own problems.
At present, the price of the double-sided circular knitting machine used for nylon 6 knitted fabric processing is significantly lower than that of a few years ago, and the degree of automation and intelligence is higher. It can be processed with nylon 6 black dye-free silk without post-dyeing and finishing, which is welcomed by most companies. However, the loss caused by the damage of the crochet hook and its replacement and maintenance are still a problem.
According to professionals, a circular knitting machine for nylon 6 knitted fabrics has needles gauge such as 24, 28, until 36 and 40 at present. Taking 30 inches in diameter and 24 needles as an example, the total number of needles has reached 2262. Due to the friction between the crochet needle and the fabric, as well as the influence of hairiness and oil stains during the processing, the crochet needle will have more than 8 types of damage such as loose pin needles, open needles, and broken needles.
Crochet needles are the most important parts of knitting circular knitting machines. The replacement of crochet needles requires high technical requirements, a long time, and high cost. For a large circular knitting machine as 24 needles, all replacements will cost 30,000 to 50,000 yuan, without loss of labor and shutdown counted.
What's more terrible is that for the nylon 6 chip spinning knitting machine, each type of broken needle is likely to cause one or more fabric defects. For example, loose needles will lead to "flower stitches" on the cloth surface. Open needles will cause holes in the cloth surface, while upward needles and flapping needles will cause thinning of the cloth surface. Moreover, if a defect is not discovered or dealt with in time, the whole piece of cloth will be scrapped.
Therefore, if there is a way to help fabric weaving factories reduce the frequency of blank needles, that would be great. Weaving factory owners and operators will welcome it very much. Is there such a way? Highsun's answer is definitely yes.
Like colored cotton, the in-situ polymerized nylon 6 chips are black from polymerization. Ordinary spinning machines do not need to add any equipment, do not need color masterbatches and additives to spin in-situ polymerized nylon 6-color yarn. Unlike the masterbatch spinning with thick particles protruding on the surface of the thread, the surface of the thread is very smooth to maximize the protection of the crochet hook, .
In addition to the important performance characteristics of saving investment, good spinnability, excellent dyeing performance, and environmental protection, there are also another three performance benefits beyond expectations that are not known to common people about the in-situ polymerized nylon 6 black chip introduced by Highsun:
1. The knitting process of spun civil fine denier silk does not damage the needle. The in-situ polymerized nylon chips colorant participates in the whole process of the polymerization reaction and is fully fused with the nylon 6 molecular chain. When spinning, the colored particles will not protrude on the surface of the thread like masterbatch spinning, which is easy to break and damage the knitting process. In comparison, the in-situ polymerized nylon 6 black silk knitting accessories cost and operating load are significantly lower, and the production efficiency is higher.
2. Good weather resistance for spinning, injection molding and film processing. In-situ Polymerization Nylon 6 Black Chips uses special colorants and functional additives with independent intellectual property rights of the enterprise, which are fully integrated with nylon 6 molecular chains and evenly distributed. When the colorant molecules on the outer surface of the material fall off, the internal molecules will continuously migrates to the surface of the material. As a result, the processed textiles and films have no batch color difference, and the color fastness to washing can reach the gray card level above 4.5. in addition, it can resist and absorb ultraviolet radiation, with better perfermance in sunlight and oxidation resistance.
3. Unexpected antistatic and self-cleaning performance. Pilling, generating static electricity, and absorbing dust are the shortcomings of conventional nylon 6 textiles. However, after the improvement of engineers, the in-situ polymerization of black filaments spun from nylon 6 black chips, injection-molded parts and extruded films, etc. The pearl black color of the belt has an electrical conductivity 70 times higher than that of conventional nylon 6. In addition, static electricity and pills are not generated with friction and it is not easy to attract dust with certain natural self-cleaning performance.