The China Indoor Environmental Monitoring Working Committee and the National Indoor Environmental Quality Inspection Center recently jointly issued indoor environmental pollution warnings: the formaldehyde over-standard of mattresses is more serious than the decoration and furniture pollution, and should be alert to the formaldehyde pollution caused by household mattresses.
According to reports, the main causes of formaldehyde pollution in mattresses are as follows.
First, the problem of excessive formaldehyde in the spring soft mattress is mainly on the auxiliary pad. In order to save costs, individual manufacturers use fabrics and sponges that have exceeded the standard of formaldehyde as bedding materials, and the mattresses that are filled out are of course too high in formaldehyde.
Second, some coconut palm or mountain brown as a bedding material, the formaldehyde exceeded the standard. In the production process of brown sheets, some manufacturers blindly added a large amount of adhesives in order to enhance the strength and hardness of the brown sheets. Although the physical properties of the brown sheets were improved, the formaldehyde was continuously released from the adhesive, causing the formaldehyde to exceed the standard seriously.
Third, the luxury ultra-thick mattresses have a lot of formaldehyde. The filling of the mattress is a urine aldehyde resin bubble formed by the combination of urea and formaldehyde. Once the manufacturer's process is not enough, the formaldehyde is easily decomposed.
Excessive formaldehyde in mattresses is more serious than decoration and furniture pollution, and should be vigilant.
The mattress is the most "close" furniture to people. It is closest to people's respiratory tract and skin. A person sleeps in bed for at least 6 hours a day. Some old, weak, sick and children spend more time in bed. There is a pollution problem, and the harm to human health is much greater than other decorative materials and furniture.
Mattress contamination problems are particularly vulnerable to consumer neglect. Most people know that decoration materials and furniture will cause formaldehyde pollution in the indoor environment, but it is difficult to imagine that the mattress with bright and beautiful appearance will also have formaldehyde pollution, so the problem of mattress pollution is difficult to find.
The mattress is exposed to the air for a long time, and the release of formaldehyde is slow and uninterrupted. On the one hand, it directly harms people's health, on the other hand, it is also the main source of formaldehyde pollution in the indoor environment.
The condition of the mattress is the bedroom. Under normal circumstances, the space of the bedroom is correspondingly smaller, and the volume of the mattress is relatively large, which easily causes formaldehyde pollution in the bedroom. Moreover, the mattress is not like the drawer of a wooden furniture, the door of the cabinet, etc., can block the formaldehyde, can reduce or reduce the amount of formaldehyde emission, the surface of the mattress is a textile material, the inside is an uncontrollable material, so it cannot be closed.
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Types of brushes
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Flat Brushes
Flats are brushes with a straight chisel edge and square shaped filaments. These can be known as shades if they`re in smaller sizes and washes/glazes if in bigger sizes. Large areas are painted with a wash/glaze brush whereas smaller flats are used for small areas of painting
Round brushes
Round brushes have a large diameter of the ferrule, more so than a liner, which can be used for applying thick to thin lines, filling in odd shaped areas, painting details and work great for lettering. Liners don`t hold as much paint as a round, however, they are super great for creating lines or curves. Script liners are similar to liners but the filaments are much longer and hold more paint. A round brush tapers to a pointed tip – several types of rounds are referred to rounds, liners or script liners. Angle brushes are filaments that have been cut on an angle – these are excellent to use in small or curved areas of the painting.
Filberts
Brushes with oval shaped filaments are known as filberts in smaller sizes and oval wash in larger sizes. Both shapes can be used for base coating, stroke work and more. There are filbert combs, filbert wash and more.
Mop Brushes
Then there are mop brushes–great for blending and smoothing out small areas. They`re also ideal for applying powdered pigments–just dust them lightly over hot or tacky wax.
Specialty Brushes
Then there are all the speciality brushes on the market used for certain techniques and garner their own results–fan, deer-foot, stumbler, mops,stencil and more
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