Coating knowledge: how to reduce the use of interior wall coating for interior decoration

Core tip: it is difficult to completely avoid the loss of paint in home decoration, but some methods can minimize unnecessary loss and save paint To reduce the loss of paint, first of all, we need to understand the causes of paint loss in home decoration (1) Material calculation error For those who prepare for decoration for the first time, the calculation error of the required materials leads to the endless use of the purchased paint, which can only be left unused, resulting in loss and waste If the decoration is the way of contracting workers but not materials, the paint and coating are mostly purchased by the owner, Application scope and advantages of roller ceramic coating Recommended introduction: the surface of ceramic rubber plate used for roller ceramic coating is cast into durable rubber plate by hundreds of independent small ceramic pieces Each ceramic piece has raised characteristics Under general conveyor belt pressure, thousands of unique cast bumps can produce positive traction, prevent slipping and extend the service life of conveyor belt roller At the same time, the bottom layer adopts high-quality rubber, which has strong elasticity and can play a good impact resistance role The scope of application of roller ceramic coating is one three six 83857180 (the same as V) 1 Roller coating in extremely harsh working environment 2 The belt joint is not suitable for fixing with iron buckle; 3 It is suitable for leather Paint Home News: the loss of paint in home decoration is difficult to avoid completely, but some methods can minimize unnecessary loss and save paint To reduce the loss of paint, first of all, we need to understand the causes of paint loss in home decoration (1) Material calculation error for the first time to prepare for decoration, for the required material calculation error, resulting in the purchase of paint can not be used up, and finally can only idle, resulting in loss and waste If the decoration is the way of contracting workers but not materials, and the paint and coating are mostly purchased by the owner, then when too many paints are purchased by mistake in calculation and all of them are opened, the endless paint will cause great waste and loss (2) The roughness of the wall surface is an important factor to determine the loss of primer The coarser the wall to be coated, the greater the loss of paint For projects requiring multi-layer construction, the smoothness of each layer of paint surface and the effect of sandpaper grinding after construction will also have a direct impact on the subsequent coating construction loss (3) Improper wall painting methods the current painting methods generally include brush painting, roller painting, traditional air spraying and high-pressure airless spraying Although high pressure airless spraying is faster, the loss of coating will be far greater than that of traditional air spraying, brush coating and roller coating (4) Improper selection of construction equipment: when spraying method is adopted, different selection of nozzles will also affect the degree of paint loss In order to meet the requirements of tight construction schedule and achieve high spraying efficiency, the construction unit or constructor may use gun nozzle with larger spraying range, resulting in waste of coating use (5) Environmental factors: various environments around the construction also affect the paint loss to varying degrees Compared with the well ventilated and relatively closed workshop, the coating loss is obviously higher in the windy outdoor construction (6) Operation level of constructors: due to different operation levels of individuals, different construction operators may have different degrees of construction losses in construction, especially in projects requiring a large number of construction Home decoration Encyclopedia: what is brush coating, roller coating, traditional air spraying and high pressure airless spraying? Brush painting refers to painting with different sizes and models of paint brush according to the size and type of the area to be painted; roller painting refers to painting with paint roller; air spraying refers to painting with air spray gun The air flow formed by compressed air flows through the nozzle hole of the spray gun to form a negative pressure, and the negative pressure causes the paint to be inhaled from the suction pipe and ejected through the nozzle to form a paint mist; high pressure airless spraying refers to the use of high pressure Pressure plunger pump, directly pressurize the paint to form high pressure paint, spray the nozzle to form atomized air flow to act on the surface of the object to be coated In the actual construction, the skill of reducing the paint loss can take measures to reduce the paint loss and waste after having a certain understanding of the causes of the decoration paint loss 1 Dust and foreign matters, cracks and peeling off places on the wall of new wall will affect the painting effect and cause unnecessary wear and tear Therefore, all dust and foreign matters on the wall shall be brushed off first, and all cracks and peeling off places shall be filled and leveled, and at the same time, the wall shall be free of salt, alkali, greasy and dragon ridges At the beginning of construction, the adjacent walls shall be covered to avoid coating 2 Because the old wall has been treated by foundation, what we should do is to ensure that the wall base is firm The wall can be washed with soda water solution first, and then the wall can be leveled after being cleaned 3 In order to save paint, brush or roll coating should be used for construction In order to ensure the flatness and smoothness of the cover, spray gun is suitable for spraying, and the wall without spraying needs to be covered in advance 4 Different nozzle selection will also affect the degree of paint loss When the nozzle with smaller spray width is used, the loss will be lower, and the spray effect of different brands of spray tools will be different, so will the loss of coating 5 The optimum temperature and humidity of paint construction are 5-40 ℃ and 90% respectively Spring, summer and autumn are suitable for wall construction If spraying is adopted, the wind speed during spraying shall be less than 6m / s, and the pressure supply of air compressor shall be more than 60N 6 Do a good job in construction planning and arrange the construction time If the time is not enough, the construction personnel may use the way of wearing paint because of the progress, and it is not conducive to the guarantee of decoration quality If it is the owner who purchases the coating, the amount of coating needed shall be calculated according to the building area of the home Coating calculation method: the wall painting is generally 1 bottom and 2 sides, i.e one primer and two finishing coats Among them, the primer must be applied The reason why the primer is applied first is to better prevent mildew and moisture, to give full play to the effect of finish paint, and to save the amount of finish paint The amount of paint used should be calculated according to the building area of the home The standard of coating application is per liter of cloth coating area: 1 liter (1L) of emulsion paint can be brushed for about 12-14 square meters of wall surface once One barrel of 5-liter coating can be brushed once for 60-70 square meters In actual construction, the area that can be painted per litre of paint will be different according to the workers' practices, wall conditions and product characteristics For example, the building area of a family is 110 square meters, of which the room area that needs to be coated with wall coating is about 80 square meters, the painting area is 80 × 3, the amount of primer is 240 square meters = the painting area ÷ the amount of finishing coat per barrel of cloth area = the amount of primer × 2 the calculation method of building area, the painting area at home = (the building area × 80% - 10) × 3 the paint family is focused on coating, diatom mud, Paint and coating, coating technology, fire retardant coating news and coating, diatom mud, paint and coating, coating technology, decoration knowledge and decoration effect map of fire retardant coating,