Formaldehyde is widely used in textile industry. In cloth production, in order to achieve the functions of wrinkle resistance, shrinkage resistance and flame retardant, and maintain the durability of printing and dyeing, formaldehyde needs to be added to additives. The use of formaldehyde can increase the stiffness and wrinkle resistance of fabrics. wall covering is also a kind of fabrics, so formaldehyde additives are added in the production process, which will gradually evaporate after being laid at home.
2. Adhesive (glue)
In the process of wall covering construction, it is inevitable to use glue. Although many merchants promote the use of vegetable gum, such as glutinous rice glue and potato gum, these vegetable gums are only a part of it. In wallpaper construction, it is necessary to mix wallpaper rubber powder (plant glue), white glue and water in a certain proportion. Although merchants promote the environmental protection of vegetable gum, white gum definitely contains formaldehyde. Nowadays, the popular wallpaper needs to add more white glue than wallpaper to ensure the construction quality!
Therefore, in the modern sense, as long as the decoration is more complicated and personalized, then your body needs to pay for your complexity and personality. Pure formaldehyde-free is impossible at present! Wall coatings are also harmful to formaldehyde.
The wallpaper does not contain formaldehyde, and the adhesive is the bane!
We commonly use paper wallpaper, non-woven wall covering wallpaper and PVC wallpaper, among which paper wallpaper and non-woven wall covering are relatively environmentally friendly and generally contain no harmful substances, but they have adsorption function. But PVC wallpaper will add plasticizer, so it will contain some substances harmful to human body. But as far as the three categories are concerned, they will not contain formaldehyde.
What really contains formaldehyde is the adhesive for wallpaper. This adhesive will contain formaldehyde and xylene. These are all volatile substances that are harmful to human body and have a long release period. At present, the recommended adhesive in the market is environmental protection glutinous rice glue adhesive. This material is not free of formaldehyde and xylene, but its content is relatively low and its release time is relatively short. Generally speaking, wallpaper itself does not contain formaldehyde.