A few days ago, the Beijing Municipal Bureau of industry and Commerce announced 13 kinds of mats that were found to have problems such as excessive formaldehyde and unqualified color fastness. The formaldehyde of the simple mirror mat produced by one company exceeded the standard by about twice. A reporter from life times visited the market and found that there were many kinds of mats, including bamboo, straw and rattan. You can choose yellow, green and coffee colors at will. The cheaper ones are more than 20 yuan, and the more expensive ones are more than 500 yuan. Ms. Li, who is shopping for the mats, is not “clear” about the news that the formaldehyde of the mats exceeds the standard. “I have heard that the mats will fade after a long time, but I really don’t know these problems. The mats are woven and the materials are natural. How can there be so many harmful substances?” Ms. Li was puzzled.
In this regard, an unnamed staff member of the Zhejiang forest products quality inspection station told the reporter that first of all, raw materials such as bamboo and wood may contain a small amount of formaldehyde; Secondly, when making mats, adhesives may be used. If the adhesives are excessive or do not meet the requirements, it is easy to cause formaldehyde to exceed the standard. In order to prevent moldy bamboo mats and achieve anti-corrosion effect, some manufacturers will immerse bamboo in chemical liquids, resulting in excessive formaldehyde content. In order to increase the gloss of the mats, some manufacturers may brush a layer of paint or clear oil on the surface, because the best bamboo mats are bamboo green mats. Some enterprises even dye the bamboo yellow mats into the color of bamboo green mats with industrial dyes, which will lead to formaldehyde in the mats exceeding the standard.
Long term exposure to formaldehyde can cause a variety of respiratory system diseases, and even cause cancer in severe cases. In general, if the formaldehyde content in bamboo mats is within the scope of national standards, it will not be harmful to human body. Song Guangsheng, director of the national indoor vehicle interior environment and indoor environmental protection product quality supervision and inspection center, said that high-grade mats may also have formaldehyde exceeding the standard, which is mainly caused by complex production processes. “In order to improve the delivery rate, some enterprises use machine weaving, which is easy to be contaminated with formaldehyde in the production process. In order to make the products more beautiful, some manufacturers carve and color the mats, and the carved and colored coatings also bring hidden dangers of formaldehyde exceeding the standard. In addition, in order to make the products more solid, the use of edge sealing technology in production may also cause formaldehyde exceeding the standard.”
In the face of all kinds of mats with uneven quality in the market, how should consumers distinguish between them? The above two experts remind that when buying bamboo mats, first of all, we should flatten the mat to see whether the weaving of the mat is tight. The whole mat of a good mat will not have uneven tightness, thickness, exposed ribs and broken edges; Secondly, you can touch it to feel its texture. A better mat feels smooth; Then smell the smell. If the taste on the mat is pungent, it may contain harmful substances; Finally, try to buy products of natural colors. It’s best not to buy bamboo mats that look especially green.
After the bamboo mat is bought home, it can be soaked in warm water for about 40 minutes first, and then placed in a well ventilated place to dry. After more ventilation and exposure to the sun for a period of time, the formaldehyde content will be significantly reduced. After using it for a period of time, it should also be often taken out for exposure to the storm. In addition, the elderly and children should be extra careful when using the mats. Linen mats are more suitable for the elderly and children; Bamboo mats are the coolest and suitable for people who are hot; Straw mats are soft and cool, which are also suitable for children, but they are easy to breed bacteria and need to be cleaned regularly; The cowhide mat has good heat dissipation and is suitable for people who love to sweat.
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