Recently, the National Standardization Committee issued the No. 9 document of 2017: Announcement on the approval and release of the national standard of "Indoor Decoration Materials, Formaldehyde Emission Limits in Wood-based Panels and Their Products". ** The General Administration of Quality Supervision, Inspection and Quarantine and the ** Standardization Management Committee have approved the ** standard of "Limits of Formaldehyde Release in Interior Decoration Materials Wood-based Panels and Their Products". This standard GB 18580-2017 will replace GB 18580-2001 and be released in May 2018 Officially implemented on the 1st of the month.
Indoor air pollution mainly comes from interior decoration building materials, such as paint, floor, etc. Therefore, the floor also has an environmental protection level. Since indoor air pollution is mainly due to the high content of formaldehyde in the air, the environmental protection level of the floor is mainly based on the content of formaldehyde in the wooden floor.
The effect of formaldehyde content on the human body:
Modern scientific research shows that formaldehyde has negative effects on human health. When the indoor air content is 0.1mg/m3, there will be peculiar smell and discomfort; 0.5 mg/m3 can irritate the eyes and cause tearing; 0.6 mg/m3 will cause throat discomfort or pain; Chest tightness, asthma and even emphysema; when the air reaches 30 mg/m3, it can cause immediate death.
Long-term exposure to low-dose formaldehyde can cause chronic respiratory diseases, women's menstrual disorders, pregnancy syndrome, reduced physical fitness of newborns, chromosomal abnormalities, and even nasopharyngeal cancer. High concentrations of formaldehyde are toxic to the nervous system, immune system, liver, etc. Formaldehyde also has teratogenic and carcinogenic effects. According to epidemiological investigations, long-term exposure to formaldehyde can cause cancer of the nasal cavity, oral cavity, nasopharynx, throat, skin and digestive tract.
There are many environmental protection signs for flooring products. The levels of E0, E1, and E2 stipulated in the national standard are not clearly marked on many products and packaging. Some businesses and consumers have vague concepts of E1 and E0. At present, the environmental protection signs of the floor mainly include E, F, and M. Below we will explain the grades of these three signs in detail.
In fact, the E-level standard is not only the national standard certification. The E-level certification originated in Germany and refers to the environmental protection standard for the limited level of formaldehyde emission. It was formulated by "EGGER" and later cited as the European standard. Today, it has become a well-known formaldehyde emission grade mark. European standards are divided into two levels, E1 and E2.
The standard system of my country's wood-based panels and their products is based on Europe and Japan. ** The General Administration of Quality Supervision, Inspection and Quarantine "Limits of Formaldehyde Emission in Interior Decoration Materials Wood-based Panels and Their Products" (GB18580-2001), marking the national standard E2≤5.0mg/L, the national standard E1≤1.5mg/L two limit levels , it is stipulated that the products of the national standard E1 can be directly used indoors, and the products of the national standard E2 must be used indoors.It can only be used indoors after finishing treatment. In the national standard "Plywood" (GB/T9846.1-9846.8-2004), the limit level of E0≤0.5mg/L is also marked. The national standard E0 level is the limit of formaldehyde emission in my country's wood-based panels and their products.* high standard.
M-level certification, M-level certification originated in Finland. Finland is recognized as one of the most environmentally friendly countries and is known as a pure country of a thousand lakes. At the same time, Finland is also one of the few countries with the highest forest coverage (96%) in the world. Perfect environmental protection system, the formulation of environmental standards is also at the highest level in Europe. In Finland's M-level certification, M3≤0.15mg/㎡, M2≤0.125mg/㎡, M3≤0.05mg/㎡. The requirements for M-level certification are very high. It is recognized as the most stringent and harsh product certification standard in the world. It has strict requirements on the toxic emission standards of products. All building materials are based on the amount of harmful substances released. It is divided into three levels, M1, M2, and M3 in turn, and different natural materials are selected as standards for each level to be compared with the detected objects. Among them, the most stringent M1 standard has reached the food and pharmaceutical grade standards. Because M1 certification can replace other European regional environmental protection certification, it has become the most authoritative environmental protection mark in Europe, and it is also the standard for the bidding of the White House and Buckingham Palace in the United Kingdom.
