Why water pack sand coating sagging and how to solve

During the construction of a water bag of sand coating, often flow phenomenon. Now, let's share the water sand color paint sagging. Water sand spraying colorful coating and some of the reasons for suspension, common causes are as follows: 1. Water sand bag to add too much thinner, colorful coating, lead to low viscosity. That is to say, we usually say that is too thin, easy to flow. Solution: thinner products in strict accordance with the requirements of add. For water-based coating, adding amount of about 10%. 2. Water sand bag multicolor paint spray gun from the coating surface is too close. This will lead to coating is not fully in the process of spray atomization, but in the form of large droplets spray directly to the substrate, which leads to flow. The solution: spray gun and keep the reasonable distance between base material, usually about 20 cm. 3. Water sand bag of colorful coating gun speed too slow, a coating is too thick, and so on. It is easy to cause drooping. Solution: to control the speed or the use of multi-layer spray robbery. 4. Water pack sand color coating construction site temperature is too low, paint drying speed too slow, easily lead to sag. Solution: higher temperature or to switch to the quick drying paint. 5. Unclean water sand bag colorful paint coating surface, such as oil, water, dirt, not very good adhesion and flow after spraying. Solution: it is necessary to disposal of the base material spraying process, not only can prevent sagging, also can give full play to the corrosion protection performance of coating. The above is a common cause. For water-based coating, high environmental humidity can also cause prolapse.