Construction of the vertical surface coatings, paint liquid flowing down the phenomenon is linked to flow. Reasons: a. Paints lean, low viscosity; b. Dry too slow; c. Paint pigment excessive physical or unevenly distributed; d. with poor Surface adhesion to the; e. to dip in so much paint,so with a thick film. what is a phenomenon of lifting at the end » What has caused this » A section of the upper bottom paint will soften the film from lifting the phenomenon called lifting at the end. Reasons: a. Primer not dry; b. A section of the upper solvent is too strong; c. Paint the end of not supporting (such as nitrolacquer, the vinyl chloride used in the oil wax finish Primer on) are biting at the end of reasons. Construction of a two-tier pay attention to spacing between the paint and finish between the end of the matching, and the appropriate application of solvent to prevent lifting at the end . Why would slow paint dry or paste back » after the construction of paint, varnish is not dry in a specified time or dry stick to the phenomenon. Reasons: a. poor Volatile solvent; b, before paint it ,Primer is not dry; c, of too much humidity, the temperature is too low; d, net to deal with the surface, oil-and wax-stained, pine resin, wood section is not closed to live; e, paints mixed with impurities or omitted in the Canadian driers, curing agent. What is the legging » How to resolve » after the construction of paint, varnish is not dry in a specified time or dry stick to the phenomenon. Reasons: a, grinding pigment production is not detailed, did not reach the required fineness; b, when a storage pool, the construction environment and dirty; c, coatings and solvents do not match, so result a gel; d, small diameter nozzle, with great air pressure, spray from the excessive; e, paint mixing machinery is not yet filtered of impurities, and physical properties, such as surface treatment is not clean. Construction of paint, why would blanch » After paint there will be dry coating or a matt dot phenomenon. The reasons are: a, mainly because of too much moisture (relative humidity> 80%) and solvent evaporation coating surface temperature too quickly so the tempraturer sharp decline, causing water vapor rally in the coating, thus making resin or cellulose precipitation caused by blanch Phenomenon. b, generally fast-drying paint volatile type (such as nitro, a vinyl chloride, acrylic thermoplastic), containing a large number of low boiling point solvents and thinners, so easy blanching. If the accession of moisture and moderate the high boiling point solvents (such as alcohol, butyl) to adjust the ratio of solvent or improve environmental construction, except for the compressed air, water and so on can prevent blanching. c, shellac and varnish more hot items (such as the Super cups boiling water) will contact Fabai. Cotton Mission dip with alcohol or dilute shellac paint in blanching Department of it be able to recover. Why after spraying the workpiece will be in blur » Painting-Seqi in the process of drying or film, color film and color in some uneven, such as yellow, floating color, the Pan-profile, such as gold and silk. This was mainly due to the proportion of pigment particles of different sizes and wetting and poor, oil-absorbing a large quantity of paint (such as the red pine) of the wetting caused, this situation can be met by adding adequate protection of plastic (such as ethyl cellulose, Poly Enolase, etc.) or dispersant to be addressed. -------------------------------------------------- What paint will be wrinkling » In addition to wrinkles paint, the paint drying process in a sharp contraction in a lot of bending edge of the ridge. The reasons are: a, dry material with an increase in inappropriate or excessive, dry coating, the inner is not dry; b, a thick coating, the outer conjunctiva first; c, with tung oil paint in the air polluter in the dry; d, painted after the scorching sun exposure or baking temperature is too high, In such cases, may replace the dry material, to improve construction methods to solve the alkyd paint can be added a few amino resin to prevent wrinkling. Paint spraying will be formed the size like the leather of orange, so why » Coating the surface of many half-or processes such as the shape of the leather of orange phenomenon. The reasons are: a, spraying paint at the high viscosity of liquid, the pressure is too large, too small nozzle, spraying distance not suitable; b, a low boiling point solvent too much, when its rapid evaporation for the paint too late to have a flow-orange peel, sometimes adding a small amount of silicone oil will be smooth coating. -------------------------------------------------- What is all about paint contraction » Construction of paint, coating the surface contraction, like water on hand in the same evil Lazhi little primer and exposed the phenomenon is known as contraction, also known as the "laugh", " pocking mark." The reasons are: a, the main cause of the coating on the surface of the wetting poor, so that it can not form a uniform coating and a contraction lobules-like; b, the surface is too smooth, shiny little primer, oil pollution of surface or stick with smoked; c, spraying equipment mixed with oil or water; d, solvent evaporation too fast, too late flow-coating; e, spraying too much density, a splash paint, and so on. Film will cause shrinkage. Shrink the most common varnish, lacquer Hongdan, polyurethane coatings, epoxy coatings and phenolic resin coating, by adding the appropriate additives to improve the paint contraction. -------------------------------------------------- Why after spraying the surface, like a lot of holes » Coating a small round circle, the center has solid particles, for Aoru circle around the phenomenon. The essence of the "laugh", "Shrink" basically similar. Only shrink is larger, irregular shape, but also smaller pinhole, such as a cone-shaped or hemisphere. In addition, the general pinhole through in the end build, and only exposed primer contraction. Paint aquifer, volatile solvents Add to hot chamber too fast or too early, in the course of paint force too large or too fast roller rotation will cause pinhole. As a pinhole of different reasons, it should be different to take appropriate measures to resolve the situation. -------------------------------------------------- Why after the construction of paint will blister » Coating the surface in the radio highlights of different sizes (Paozi), resulting in such a morbid is the main reason for the construction of the error. For example, primer coated finish that is not dry; Surface water contains a very humid environment or construction in the porous items on the fast-drying paint. -------------------------------------------------- ------------------------------ Paint does not cover all the parts, see the workpiece background, what are the reasons » the background of paint could not cover the phenomenon is open at the end. The reasons are: a, not enough pigment in paint, paint with poor blot-out; b, adding construction of too much thinner; c, not stirred liquid paint uniformly. -------------------------------------------------- ------------------------------ Why paint will turn yellow or black » How to resolve » Paint color changes, in particular, the film-baking easy to turn yellow paint, the baking temperature is too high. Light-coloured oil-based paint due to excessive amount of driers, will turn yellow. Bronze powder, aluminum silver and lead paint case of sulphur dioxide gases in the atmosphere, vulnerable black. Ammoniation rubber and a vinyl chloride, chlorinated rubber and a vinyl chloride, chlorine, such as vinegar Huang polymer decomposition occurred HCL precipitation will turn yellow. In order to prevent their turn yellow, plus appropriate organic tin stabilizer. Besides containing iron and chromium blue green color of the paint expected, the basic construction of surface that is changing color. -------------------------------------------------- What is the color paint seepage one thing » Paint the primer dissolved so that the color of infiltration primer on the industry to finish the phenomenon known as the seepage color, known as bite-color. Primer on the red paint on the asphalt coated or light-coloured paint, often in colors such infiltration. The reasons are: a, Primer is not dry, finish bottom of the dissolved film; b, primer containing dyes, asphalt layer is not closed , Tu will finish in infiltration after the color. At this point in the pigment of wood also oozed from the surface of the paint, paint color will be seepage. -------------------------------------------------- What is sweating » What are the causes » During the construction of the surface treatment is not due to the net, oil seepage from the bottom to the film on the phenomenon. Metal surface of the oil pollution, with the exception of the old paint residue after the wax, the film will be produced into transpiration, particularly nitrolacquer most sensitive. Linseed oil or immature oil transpiration also easy to produce, in damp, dark, warm environment, especially when the bad ventilation, or plasticizer with misconduct and so easy to produce perspiration. -------------------------------------------------- ------------------------------ What is the effect cream orfog » How to resolve » Construction of varnish film in 1 to 2 days or weeks after the frost coating the surface appear fine mist 3.5 phenomenon. In high-temperature industrial atmospheric environment, smoke, dust, moisture, such as the role of the most easily lead to this phenomenon. The stronger the water resistance of varnish, the greater the tendency from the cream. Short oil varnish, varnish oil-PF also vulnerable from the cream. Alkyd paints of cobalt materials are easy to dry from the cream. Volatile solvents are too easily lead to this phenomenon. The dry material from the inhibition of calcium from the cream and therefore the best use Pb / Ca / Co = 10:5:1 mixed dry material. -------------------------------------------------- ------------------------------ Why not paint wrinkles wrinkling » Because the ratio of paints polymerization or improper storage for too long, baking temperature is too high, too low or uneven.