Fiber, an abstract and concrete concept. In the dictionary, its definition is: natural or artificial filament material. Fibers are divided into natural fibers and chemical fibers. Natural fibers refer to fibers originally obtained in the natural world, or obtained from artificially cultivated plants and artificially raised animals, mainly including cotton, various hemp, animal plush, and silk Fibers, etc. The chemically processed fibers made from natural ingredients are regenerated fibers such as viscose fibers, modal fibers, lyocell fibers, etc. The fibers made from chemical compounds are synthetic fibers such as polyester , nylon, acrylic, spandex and so on.

In life, whether it is a humble towel or a luxurious, fashionable high-grade cashmere sweater, fiber applications are inseparable from us. However, few people fully understand and understand the fiber itself. It seems to be a very tiny and difficult to discern world.

Let us walk into the National Fiber Quality Inspection Center Laboratory. You will find that the fiber world is far more fun and more esoteric than you think.

Cotton Standard "Distribution Center"

In the detection process, method standards and test standard materials (samples) are important factors to ensure the accuracy of test results. The National Fiber Quality Inspection Center undertook the revision of national standards concerning fiber products and test methods, and organized the production and updating of fiber grade physical standards and various fiber standard samples.

The physical standard sample of cotton is one of the important tasks of the National Fiber Inspection Center. The first time I walked into the cotton grading laboratory, the reporter was still uncomfortable. Maintaining a constant temperature of 20°C and a constant humidity of 65%, this is the most comfortable and safest environment for cotton. For workers, this constant temperature and humidity standard is also a very suitable working environment.

Determining the cotton rank is an indispensable means to determine cotton quality in cotton acquisition, processing, storage, and sales links, and to measure cotton use value and market price. In order to protect the quality of cotton, improve the cotton quality assurance system, and promote the healthy development of the cotton industry, in 1998 China gradually began to carry out notarization tests on cotton traded in various markets. In order to ensure accurate and reliable inspection data for fiber inspection agencies throughout the country, since 2001, the National Fiber Inspection Center has carried out random inspections of cotton public inspection samples from fiber inspection agencies around the country every quarter to identify issues through random testing to ensure the nationwide testing level. Consistency ensures that the fairness of the data is scientific, fair and accurate. All cotton production sites send cotton samples to the fiber quality inspection center, uniformly classify physical samples, sort and sort the samples, and then distribute the samples to various places as the standard for cotton trade. Such standards are formulated once a year.

In the cotton grading laboratory, the country's most authoritative cotton grading experts are gathered, and they can rank the cotton in appropriate grades by hand pulling and visual inspection. According to the staff, only old experts can do this in China.

Also in the fiber-hyperthermia fiber testing room, the roar of the machine is accompanied by a quick and accurate movement of the staff, and once the cotton is divided into its own class within a short period of time. In 2004, China officially began to implement the reform of the cotton quality inspection system, implement instrumental and universal authoritative inspections in the cotton processing sector, and at the same time in order to accumulate the quality information of China's cotton.

In addition to the development of cotton grade standards in China, the National Fiber Inspection Center maintains consistency and harmonization between the testing level and the international level. Every year, it participates in the comparison of four cotton projects of the Bremen Fiber Research Institute and U.S. Department of Agriculture. For the trial activities, all the results of the participating trial activities were satisfactory.

Fiber products undergo "hardships"

In the traditional crosstalk “Selling the Cloth”, there are some famous sips to praise the durability of cloth heads: “Forbidden and banned from the sun, banned and imprisoned, imprisoned and imprisoned...” at the Fiber Inspection Center, those The fiber products to be inspected must have some “toughness”, otherwise it will be difficult to “laugh” to the final stage of the testing process.

In the functional laboratory, colorful test samples are hung on hangers of different heights and heights. According to the characteristics of outdoor clothes, in the case of simulating various weather conditions, it is a place where they are subjected to the test of “water resistance” and “sun protection”.

With the continuous emergence of new types of textile raw materials, people's consumption of textile products has shifted from durability to safety, ecology, and other aspects. Durability of products has not been a reference indicator of qualified products.

Nowadays, many consumers pay attention to their textures in addition to paying attention to styles. Maybe you'll look at the water shuffle on your clothes. Maybe you're an expert. You can roughly judge the composition of your clothes by touching and looking. According to the staff’s introduction, some people took off the scales of wool and used them as cashmere. Under the scanning electron microscope with tens of thousands of counts, the traces of blemishes can be clearly seen. All kinds of fiber components are immediately “exposed” and far from humans. As far as it can be.

In the climate-resistant, dimensional stability laboratory, simulations were used to test the light fastness of textiles and apparel products, as well as the dimensional changes after washing or dry cleaning. You can use the simulated sun to detect the firmness of the clothes, especially thick clothes such as curtains, woolen suits, etc., which are exposed to sunlight for a long time. This is more "harsh" than the conditions that simulate natural light.

Into the microbiology laboratory, we must first pass through four doors, and we must also undergo the “baptism” of the “air shower room” between the four doors. More than a dozen air outlets “spit” the clean air so that the entrants can do nothing in advance. Bacteria status. In this sterile laboratory, it is precisely where bacteria are cultivated. It is used to detect antibacterial socks and other fibers, textiles, antibacterial and health indicators.

In the eco-textiles laboratory, azo dyes, heavy metal ion content, formaldehyde content, pH value, insecticides, banned flame retardants, and sensitization that can decompose carcinogenic aromatic amines can be decomposed in accordance with international and domestic eco-textiles and safety standards. Detection of cancer-causing dyes and other items.

In addition to these detection processes, there are many people or feel new, or esoteric test items involving the detection of professional products, such as yarn and other fiber spinning products. The National Fiber Quality Inspection Center also has strong equipment and technology as a support, more than 260 sets of testing equipment, can meet industry standards, national standards, ISO, AATCC, IWTO, IWS, BS, ASTM, CCMI, ITMA, Oko-Tex And other international and foreign advanced standards to carry out testing activities.