1, clothes containing chemical fiber components are prone to static electricity. Static electricity produces a large number of cations around the human body, which will reduce skin moisture and increase dandruff.
2. Thermal underwear is not conducive to sweat evaporation due to poor air permeability. When sweating, urea, salts and various toxins in sweat will adhere to the body surface, which will aggravate skin itching and cause contact dermatitis, eczema, furuncle and other diseases. The cold sweat can't be discharged in time, which makes people catch a cold easily.
3, some small brands of underwear are like this! Maybe! If it contains excessive formaldehyde, it will gradually release free formaldehyde during wearing, which will easily cause skin inflammation and even cause asthma, allergic rhinitis, lacrimal gland inflammation and other diseases. Long-term exposure to formaldehyde may also lead to the risk of skin cancer.
4. Wearing thermal underwear for a long time will inhibit the hematopoietic function of human bone marrow, reduce the body's immunity, and then cause various infectious diseases. In particular, the damage to the nervous and endocrine systems of the elderly is particularly prominent, and a series of symptoms such as irritability, insomnia, palpitation, hyperhidrosis and headache often appear. It can also promote serious diseases such as stroke and myocardial infarction.
Polyester fiber is a synthetic fiber spun from polyester condensed by organic diacid and diol. Polyester fiber produced in large quantities in industry is made of polyethylene terephthalate, and the trade name of China is polyester. It is the largest variety of synthetic fibers at present. Refers to the general name of fibers made of polyester condensed from various diols and aromatic dicarboxylic acids or their esters. The specific varieties are: polyethylene terephthalate fiber, polybutylene terephthalate fiber, polypropylene terephthalate fiber, polyethylene terephthalate-1, 4- cyclohexane dimethyl fiber, polyethylene terephthalate fiber, and various modified polyethylene terephthalate fibers (such as CDP and EDDP). Because polyethylene terephthalate fiber is its main variety, it is usually called polyester fiber. This kind of fiber has a crisp appearance and good thermal stability, but its hygroscopicity is slightly poor. Mainly used for making all kinds of clothes, bedding, interior decoration products, etc. Individual varieties such as poly (ethylene 2,6-naphthalate) fiber are mainly used in industry.