With the improvement of people's living standards and requirements, the requirements for the decoration of living environment are getting higher and higher. In some high-end places, in order to improve the degree of decoration, hard bags are usually used to decorate the walls. The so-called hard packing means that the engraving machine and MDF are sized in different ways, and then covered with finished cloth or leather to form decorative blocks with different textures, and then these decorative blocks are stuck on the wall to form a three-dimensional bottom wall. So what materials do you need for the hard base of the wall? Let's take a look at the substrate of hard packaging on the wall.

First, the reason why the wall is hard to pack the base 1. If wallpaper is pasted, the putty wall is powdery, which is difficult to operate. Brushing the base layer increases the viscosity of the wall.

2. The hard-wrapped base of the wall can increase the impermeability of the wall and prevent moisture from infiltrating into the wallpaper to make the mold fall off.

Second, there are two kinds of materials for the wall hard-mounted base: one is varnish and the other is basement membrane. The difference between the hard base materials of the two walls lies in: basement membrane: new product, environmental protection. Varnish: smell, no basement membrane is ecological, but stronger than basement membrane.

A. From the perspective of environmental protection, the chemical composition of varnish contains nitro, ethanol, formaldehyde, phenol and other substances, which are volatile, so after long-term use, the smell of wallpaper is volatile and irritating, which has a serious impact on the body. The basement membrane of wallpaper is different. Because the basement membrane of wallpaper itself is water-based, there is no irritating smell and no other auxiliary materials are needed. Although water is clean, it will not produce volatile substances.

B. structurally, the basement membrane can only be used by watering. More convenient than varnish. The drying time of basement membrane is much shorter than that of varnish. It only takes two hours. If the weather is wet, it may take a day to dry. Varnish for at least 3 days, so the use of basement membrane saves construction time;

C from the perspective of protecting wallpaper, varnish is corrosive, which greatly shortens the service life of wallpaper. The basement membrane of wallpaper can form a dense protective film on the wall to prevent the wallpaper from turning yellow and prolong its service life. In addition, the protective layer in the wallpaper decoration system should first have a basic sealing function to prevent salt, alkali and water from infiltrating into the pores of the base and improve the adhesion. From wallpaper to grass roots. Effective protective layer materials not only have excellent alkali resistance, water resistance and adhesion, but also must provide continuous stability under the influence of complex external media.

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