1, first of all, whether the products have passed the "China Environmental Labeling Product Certification" products are healthy, environmentally friendly, quality qualified, non-toxic and harmless.

2, look at the function of the professional products. Professional products are generally of high quality. There are many base films on the market which are not targeted at specific walls, but are widely applied to all metope. Because the metope is very alkaline now, if choose the general base film products, can not play the function of the wall paper mouldy and discoloration, so the base film brush is equal to no effect.

3. The solid content of the basement membrane. Solid content is the parameter target of solid matter dissolved in water. Solid content represents the function of base film to prevent mould and molting of wallpaper. A simple test is to extract the basic film of different manufacturers and dripping them on clear and clean glass. The solid film with high solid content dries well and forms a solid film. Good basement membrane is dry and transparent, glossiness. There is no impurity. Now some manufacturers are improving the solid content, adding powder in the basement membrane to improve the solid content, but the base film is dry and transparent, not glittering and glittering, without glossiness.

4. Look at the appearance of the liquid in the basement membrane. Turn over the lid of the bottle and look at the degree of the liquid. High quality liquid film will have excellent gloss, liquid semi transparent condition, good liquidity. The residual base membrane liquid looks Matt and the liquid color is a little white.

5. Smell the smell with your nose. If it is the chemical flavor of the nose, the hyperbranched formaldehyde, the VOC target is higher, the product is not good, and conversely, the chemical odor is not obvious, then it is normal, because the base film is made of the main ingredient of the lactic acid liquid, it is a kind of chemical raw material, but the formaldehyde in this base film fits the world environmental protection standard, There is no harm to the environment and the human body.

6, look at the role of the base film brush to the wall. The base film with high solid content also has large water consumption and large area of brushing. Brushing on the wall is reflective, and the film is thicker. After the wall dry will be more hard; on the contrary, the solid content is low, the moisture content of the base film, painted on the wall like a layer of water, will not have a reflective effect, the wall will not be hard, with a fingernail to scratch the wall can be scraped to the wall, leading to the wall surface is simply damaged.

The article comes from: moisture-proof basement membrane - Jiangmen Chuang Mei Jia Decoration Material Factory

Http://www.jmcmj.com/newsshow.asp? Id=189