Nylon 70D Spandex Covered Yarn

High Standard Workshop

Founded in 2016, the company covers an area of more than 30,000 square meters and is a production and sales enterprise specializing in norma yarn and functional yarn development.

Excellent After-sales service

We are a factory with superior after-sales service. We also have an innovation department which can help you develop new products. We can provide comprehensive textile production solutions.

Rigorous Quality Control

We will check if there is a shaped yarn or quality issue. Each carton is packed with a plastic tape of the same length and width. Storing yarn in the warehouse and keeping it in stable temperature and moisture to ensure quality.

Strict Production Flow

Strict production processes, automatic packaging, and strict delivery procedures, all to provide customers with the best quality service.

1Q: What is Spandex?

A: Chemical fiber refers to those natural or synthetic high polymer as raw materials, through chemical processing to produce the fiber, it can be divided into artificial fiber and synthetic fiber two categories. There are two kinds of artificial fiber, that is, artificial cellulose fiber (such as viscotic fiber, rich fiber, etc.) and artificial protein fiber (such as soybean fiber, peanut fiber, etc.), and the camp of synthetic fiber is relatively large, polyester fiber (i.e., polyester), polyamide fiber (nylon 6, nylon 66, etc.), polyacrylonitrile fiber (acrylic fiber), Polyvinyl formaldehyde fiber (Vinylon), polypropylene fiber (polypropylene), polyvinyl chloride fiber (chlorylon), polyurethane fiber (spandex). Constituent material contains more than 85% of the components of polyurethane, trade name Lycra (Lycra, the United States, the United Kingdom, the Netherlands, Canada, Brazil), Neolon (Neolon, Japan), Dorlastan (Germany) and so on. It was first developed by Bayer in 1937 and successfully developed by DuPont in 1959. Dupont began industrial production and has sold its spandex industry to Koch Industries Group in 1959, with a total production capacity of about 100,000 tons. At present, the global total capacity of spandex is about 600,000 tons, while the capacity of South Korean Hyosung Company is close to 120,000 tons, becoming the world's first. The first spandex enterprise in China was Yantai Spandex Factory, which started production in 1989. The Chinese mainland has an existing production capacity of about 350,000 tons, making it the world's largest producer of spandex.

Spandex is generally not used on its own, but is incorporated into fabric in small amounts. This fiber has both rubber properties and fiber properties, most used in spandex core-cored yarn, known as elastic core-cored yarn, the main characteristics of this yarn, one is to get good feel and appearance, natural fiber composed of outer fiber moisture absorption; Second, only 1-10% spandex filament can produce high quality elastic yarn; Three is the elastic percentage control range from 10% to 20%, according to the use of the product, choose different elastic values. It is easy to spin 25 ~ 2500 denier silk of different thickness, so it is widely used to make elastic woven fabrics, such as socks, furniture covers, ski clothes, sports clothes, medical fabrics, belts, quartermaster equipment, elastic parts of space suits, etc. As people put forward new requirements for fabrics, such as light weight, comfortable fit, soft texture, etc., the proportion of low-size spandex fabrics in synthetic fibers is also increasing. Also useful spandex naked silk and spandex and other fibers combined twisting twisted yarn, mainly used in various warp knitting, weft knitting fabrics, woven fabrics and elastic fabrics.

2Q: What is the test method?

A: One end of the tested sample is clamped on the upper gripper of the CRE type electronic single yarn strength meter, and the other end is clamped with the lower gripper after adding the pre-tension specified in the standard. At the same time, the sample is tensioned at a rate of 100% distance length (relative to the original length of the sample) until the sample breaks. As A result of the gripper and force sensor closely combined, this time the force sensor on the gripper by the force into the corresponding voltage signal, amplified by the amplifier circuit, A/D conversion, and finally converted into a digital signal into the computer for processing. The instrument can record the breaking strength, breaking elongation and other technical indicators of each test. After the test, the data processing system will give the statistical values of all technical indicators (see Figure 2 for the working principle and flow of the instrument). After the instrument is connected to the computer, it can also add a number of test functions, and real-time display, diagram and record the whole process of stretching, which can realize long-term storage of data and graphics, and is more conducive to network management.