Why same sand water bag on the wall or the effect is not ideal?

At present more and more colorful engineering, water bag water sand bag is at the stage of blowout engineering, volume product, especially in the past two years the rise of water sand bag project! Compared with water bag colorful coating, the coating, better resistance to impact with longer life adornment effect is very good; But experienced friends all know that colorful coating used on the same project during the construction of the same batch of coating product to guarantee the construction effect, but a lot of projects in the use of the same after water sand pack did not achieve the ideal effect, is this why? May be the place out of the question. A, gun regulation construction, the traditional litchi granite stone material surface, spray is the need to really stone paint, and then the surface coating, water bag water construction is complicated, quality and effects are difficult to control; Sand and water package coatings, construction, shape and decorative pattern layer forming a gun, very convenient, especially for rob period of the project, water bag of sand coating will be more obvious advantage. Spray gun pressure, diameter is according to the specific viscosity of water bag sand and sand to adjust, pressure greater than small leads to spray the effect is not uniform. If not before the construction the calibre of the spray gun, air pressure combined with trial spray coating thickness, air pressure, and spray effect is difficult to guarantee. Especially the larger engineering people before construction, at the same time must adjust the unity of the spray gun, spray test. Taken the gun from the smaller, the greater the spraying pressure, product by the impact of the air pressure is, the greater the water bag water coating can appear not average, apply a thick problems; The smaller the distance, the greater the gun spraying pressure, paint is easy loss, cause the part of paint spraying material too little, can not meet the specified thickness. Taken the spraying of sector and the coated surface appear vertical state. Manual manipulation of the spray gun, spraying width cannot appear too large, or the coating will be uneven. Spray gun running always parallel to the coated surface, and spray sector vertical, unstable running speed, uneven thickness, operating rate coating is too thin, too rapidly running speed too slow coating is too thick. Taken in the use of spraying equipment, to do efforts to moderate, the distance can be appropriate, such ability can get the coating effect. After construction, something tied up also needs to improve, coatings and instruments to help clean up, use the leftover after coating to keep block, it is need to pay attention to the problem. Second, poor base surface roughness on the surface of the base flatness for water sand bag of colorful coating spraying effects is very big also, if the wall surface uneven, sand covering water on the surface of the base of flatness is harder to achieve, not only affect coating roughness, more will affect the color uniformity, must do so before the application of the base surface leveling and polishing work. Construction method: (1) wall cleaning: first use tap on a base level (such as a hammer Are free drum) Shovel to floating layer, ensure that solid base, found an empty drum place immediately fully eliminate the original until the bottom in metope, found that civil engineering batch of free oscillation layer drum shall be removed. Using portable grinder, Angle grinder, grinding equipment to burnish, grassroots require plain have float sand burr on the surface of the paint, etc. (2) blow be bored with child, we used the external use of flexible putty, wall coating requirements edges straight, metope is flat and level. (3) bottom coating construction: flexible putty dry completely, after besmear again bottom coating, uniform, requirement color even no hair flower phenomenon. (4) the finished product protection ( Elastic line plastered) : according to the requirements and construction environment, the necessary wall protection, need to paste paste of crepe paper line. Three, uneven thickness of colorful water sand coating thickness if uneven coating effect can appear inconsistent color shades, so to ensure the coating thickness uniformity, the jointing point can be assumed to be spray finishing, the size of the area is the best in the same place at one time. Fourth, the system stability and colorful paint spray paint well, the current development of paint colorful system had to be taken into account considering transformation can be applicable to mass production and storage for a long time, many colorful system at present stage, select a excellent technical reserves, late system stability is suitable for mass production well can spray paint the stability of the system in coating industry transition stage leading to