Brushing latex paint process

1. The main construction process sweeping grassroots → to fill the putty, partial scraping putty, flattening → the first pass to putty, smoothing → the second round of putty, smoothing → brushing and sealing primer → brushing the first pass paint → Putting up putty, smoothing → brushing the second time coating → polishing and living.

2. Construction Essentials Grassroots treatment is the key to ensure the quality of construction, and ensuring that the wall is completely dry is the most basic condition. It should generally be placed for more than 10 days. The walls must be flat and at least scraped twice to meet the standard requirements. The method of applying the latex paint may use hand brush, roller coating and spray coating. Brushing should be done continuously and quickly, once brushing. When applying latex paint, it should be uniform and there should be no phenomenon such as brushing or flow. Brush it again and polish it again. Generally should be more than two times.

3. Matters needing attention (1) Putty should be matched with the performance of the paint, solid and firm, and must not be powdered, peeled or cracked. Use water-resistant putty in damp places such as bathrooms. (2) The coating solution should be thoroughly mixed, the viscosity is too large to be properly added, and the viscosity can be increased by adding a thickener. (3) The construction temperature is higher than 10 degrees Celsius. Indoors cannot have a lot of dust. It is best to avoid rainy days.

Wall paint construction process

one. Substrate processing

1. Create a new wall - maintain for 3-4 weeks, to ensure that the wall PH value ≤ 10. Remove oil stains, floating dust and loose particles on the surface of the wall. If the wall is too alkaline, use 5% dilute hydrochloric acid to clean the wall, then rinse with clean water and dry thoroughly. With a closed primer (appropriately dilute) to coat the wall again, the outer wall is dried for more than 24 hours, and the inner wall is dry for more than 4-6 hours.

2. Old Wall - Use a wire brush or other tool to remove old paint or loose layers. Use detergents to remove oil, mold, moss, and other debris from the surface of old walls. With a closed primer (appropriately dilute) to coat the wall again, the outer wall is dried for more than 24 hours, and the inner wall is dry for more than 4-6 hours.

II. Puttying

1. Scrape the wall with a putty to fill in all major defects such as holes, cracks, and rough edges.

2. Polish the uneven surface and rough surface with sandpaper to make the wall surface smooth and remove surface dust.

Three.

After the putty layer is completely dry, the wall is scraped twice with a closed primer. The construction method is recommended to use spraying, brushing or roller coating. The recoating time is 6-8 hours. The primer should be completely covered after drying. Body, no hair phenomenon.

Four.

Before coating the surface layer, ensure that the construction surface is smooth, clean, dry, and strong, and paint the company's environmental protection latex paint two to three times. The construction method can be applied by roller coating, brush coating or spraying, or a combination of several methods. The recoating time is more than two hours.

V. Practical tips

Before finishing the finish of the wall paint, it is necessary to ensure that five basic characteristics are achieved.

Solid, smooth, dry, neutral, clean, and note that the moisture content of the base layer shall not be greater than 10%, and the PH value shall not be greater than 10.

Determination of moisture content: A rough judgment can be made by covering the film by cutting the plastic film into a 300 mm square sheet and covering the surface of the substrate in the evening. The tape is used to seal the four sides of the film. Take care to ensure that the film has a certain degree of slack. After the next day, observe whether there is any obvious condensation on the inner surface of the film.

The pH test method: first wet the exfoliated cotton with water, and then press it gently on the base level of the test to absorb the alkali of the base layer. After 1 minute, use a PH test pen to measure the wet cotton that is in contact with the base layer. The PH value can be known, and it can also be determined directly by moistening the wall with water.

Construction Notes

1. When using roller construction, use high-quality rollers as much as possible. The poor rollers will not only be unevenly painted, but will also leave certain roller prints and fiber on the wall.

2. External wall paint generally does not need to be diluted, but it also depends on the viscosity of the product can be diluted in an appropriate amount, but the general dilution of the amount of water can not exceed 20%, excessive dilution will cause the wall to appear powdery, sagging phenomenon. Internal wall latex paint dilution should be appropriate, the general water volume of 20% -30%, excessive dilution will lead to paint powder phenomenon, and affect the paint film texture, scrub resistance and hiding power.

3. The last wall putty should strive for a construction in place. If the wall area is too large, it is better to have a dividing line, one can release the wall pressure, reduce the wall cracks; second, the area is too large, the wall To achieve complete smoothness, it is very difficult to use a dividing line method to divide a large area of ​​the wall into small areas to create a visually relatively flat surface.

4. During construction, the air humidity should be greater than 85%, and the surrounding ambient temperature should not be lower than 10°C. Interior wall paint should not be less than 5 °C, so as not to affect the quality.

5 If the topcoat is selected for color matching, in order to ensure that the color after painting is completely consistent, the paint of the same color is generally mixed in advance, and the mixture is used up once evenly.

6 Exterior wall paint should be avoided in bad weather or dusty weather and other bad weather construction.

7 Keep the construction tools and surroundings clean.

8 Oily exterior wall and do not use water-based primer.

Wood paint construction process

I. Check the quality of woodworking

Check the nail hole, interface, offset, handprint, pencil mark, planing, stains, etc., and declare to the owner in advance that serious damages and uncontaminated stains can be obtained.

Second white billet processing

320 sandpaper polishing, blade scraping, thinner scrubbing and other methods to remove white billets and other stains.

Three. Sample

Curing agent is applied by scraping the white board trim. The yellowing of the board not only proves that the paint is not bleached, but proves that the board has been bleached.

IV. Processing

If it is confirmed that the board has been bleached, the processing method is as follows:

1. The surface of the board can be repeatedly scrubbed with warm water until the remaining bleach is completely removed, and then painted and dried.

2. Select yellow-resistant products (such as the company's benzene-free luxury series).

V. Closed: Brush the sealer once.

6. putty: use transparent putty or water ash, using a thin scraper or thin brush, etc., fill the hole can be dry thoroughly polished.

7. Clean environment: In addition to wooden floors, dust and dust on the walls and surfaces of the ground should be removed, and appropriate amount of water should be sprayed on the ground to clean the surface of the paint with a clean cotton cloth.

8. Primer: Match the paint well filter and apply the primer two times. Each construction interval is 5-8 hours.

9. Polishing

After the primer is dry, polish it with 320 grit sandpaper, then grind it with 500-800 sand paper, and remove dust from the coating surface with a damp, clean cotton cloth.

Ten. Topcoat

With paint well filtration, clean the environment and the workpiece, two coats of paint, wet-on-wet process or sanding with 1000 sandpaper between the layers.

11. Conservation

Brushed finishes need to be maintained for more than 48 hours.

Twelve. Polishing: If you need to pursue the film with a special gloss and feel, after the paint is completely dry with more than 1000 sandpaper mill, spray wax polishing.

Varnish construction specification

First, the construction process

Internal Acceptance→Material Polishing (360# sand paper, sweeping ash)→Water-based sealing cover (1~2 times)→Complementary color ash (colored gray sanding, 600 sandpaper, sweeping dust)→ Brush the first time Eyes, color correction, sanding, 600# sand paper, and gray ash) → scratch transparent putty 1-2 times (grinding, 800 sand paper, sweep dust) → brush 2-3 times clear bottom (grinding, 800# sand paper, dust ) → spray, brush the first time clear surface (1000# sandpaper dry grinding, sweep gray) → spray, brush the first 2-3 times clear noodles (filtered with 200-300# filter) → finished product protection.

Second, the construction process

1, internal acceptance

1 After the veneer is delivered to the construction site, the team leader and the project manager should check the quality of the sheet. If it is found that there are quality problems such as penetration, digging, and large color differences, the material officer should be notified immediately to return the product. If there is no quality problem, the painter should be informed to paint the Green Bo (or Kemei) brand back cover treasure. Before brushing the back cover treasure, apply 360 sandpaper to polish and remove the stain. When lacquer panel is brushed, brush it first, please After the owners saw the approval, they painted a lot and prohibited other types of work instead.

Note: If the weather temperature is too high, the back cover can be diluted with alcohol to paint the veneer, because the temperature is too high, too fast drying, brush marks may appear.

2 Before the construction of varnish, internal inspection shall be carried out on the woodworking decoration project to check whether the veneer panel closing line is concave; whether the studs and nails on the veneer panel are exposed in a large area, whether it is debonded with the base layer, and whether the production of “Fight Angle” is made In place, consistent, with or without damage; in particular, large area veneer inspection for damage, scratches, if the above phenomenon carpentry must be reworked.

3 hardware accessories: hinges, hinges, magnetic touch, pull handles and door handles. When the carpenter leaves the field, he must completely remove it, pack it in a bag and put it into a pail of white plastic to protect it, and give it to the custody of the master painter when he enters the market. The metal parts that cannot be removed due to technical reasons cannot be removed. Such as the three-level silent drawer track, lock cylinder, lock box, sliding door track, etc., when the painter master comes into play, it must be protected.

2, material grinding

Use sandpaper with sandpaper # 360# to grind the wood grain. The sanding of the veneer is forbidden. The focus of the sanding is pencil printing, rust, stains, dust, milky white glue, etc.; if the veneer is covered with creamy white rubber, use a blade. Gently clean (it is also possible to dilute with thinner). When polished, the logo on the veneer must be removed. Grinding should pay special attention to the surface of the veneer can not be worn, thoroughly polished, "Fight angle" try not to grind. When grinding, if exposed nails and nails are to be nailed into the board carefully with a steel nail, the nail hole can not be enlarged; after the grinding is completed, dust is cleaned with a brown brush.

3, brush water-based closure treasure (1 - 2 times)

Brush water-based back cover treasure try not to add water, if more viscous, bad brush, add alcohol to dilute.

After brushing the water-based closure, the panels need to be laminated and the interlayer should be covered with wax paper or a thin film.

Tips: (Do not use water-based primers to brush water-based primers or topcoats.)

4, complementary color gray

1 patch color gray is the nail hole, is a key part of varnish. With 801 glue (white latex or other water-based plastic) + gypsum powder (full cooked) + fly powder + toner, (color according to the color of the veneer) transferred to the ground color gray. (Note: The wood grain of the veneer has a basic color, which is the background color, and then the color on the background is the color of the surface, which is its texture). Then the color of the veneer surface is adjusted according to the color of the veneer surface. Sometimes the grain is gray. There are various colors or shades of colors. When the color of the modulating surface is gray, a variety of colors must be allocated according to the color of the texture. To do water-based paint, the color of the putty should be slightly deeper than the color of the board.

Before the large area of ​​ash is filled, it is necessary to test the color in a small area and then repair the area in large areas. The nails cannot be seen at the standard of 1.5 meters. When filling the ash, it should be slightly higher than the board surface, and the smaller the compensation area, the better.

3 After the ash is dry, use 600# sandpaper to grind the wood grain. When grinding, no ash can remain on the board. After grinding, clean it with a brown brush.

5, brush the first time

1, the clear primer according to the proportion of product specifications deployment, paint should be fully mixed evenly. Stir gently and evenly in a clockwise direction. Do not stir at high speed or in the opposite direction, so as not to destroy the paint reaction chain. Stir and let stand for 20 minutes before use, so as to avoid whitening, blistering, pinhole and uneven gloss. Unprovisioned waterborne wood lacquers should be sealed immediately and placed in a stack of material.

2, special paint brush for water-based paint, should go from top to bottom, from inside to outside, from difficult to easy brushing. When brushing operation, the method of straight grip is generally adopted. The fingers should not exceed the iron sheet, the hands should be held tightly, the wrists should be flexible, and the hands and the body should be moved together when necessary. When lacquering, do not brush all the bristles, paint to the special brush 2/3, after the full, to paint the brush in the paint bucket on both sides of the light shot a few times, so that the paint photographed the bristles of the head to avoid Paint drips when brushing. At the beginning of brushing, the paint brush should be vertical as far as possible, and the brush should be brushed on the abdomen of the brush. When the paint brush mark and the remaining paint are finally applied, brush the brush with the tip of the brush.

6, scrape transparent putty 1-2 times

This process is a choice, depending on the depth of the veneer wood grain, the main role is to fill the wood grain. If the wood grain is deep, it is difficult to fill with the primer, you need to scrape the transparent putty, you can also scrape the self-adjusting putty (red, yellow, black powder + 600 mesh talcum powder + white latex transfer), putty layer can not be polished If any particles, residues or contaminants are to be ground off with sandpaper. After grinding, the wood grain is filled and the finish is smooth and flat.

7, brush 2-3 times the bottom

The construction method refers to the process of clearing the bottom of the first pass. After the coating film is dry (6 hours), the missing color, empty patch, and nail hole are repaired with color dust. If the nail color is not up to standard, use color fineness to repair or dig out. After drying, grind it with 800# sand paper, grind it clean, and brush it with a brown hair brush. The number of clean constructions should be determined according to the depth of the capillary pores of the plate. If the capillary with deeper pores is used, the primer should be applied to the primer. The effect of the primer is to provide fullness and support the finish.

8, polishing

A, grinding is to make the next coating film and the upper coating film better match, increase the paint film adhesion, flatness, feel and so on. Therefore, the inspection after grinding must be free of bright spots, smooth, and unobstructed feel. The dry-grinding of the waterborne primer is easy, and the sanding is very good.

B. It can also be milled, but try not to use it. Shuimo, also known as fading or grinding back, as the name suggests Shuimo is to retreat the paint film, so that the next road coating and the road coating better match, increase the film adhesion, flatness, feel and so on. Therefore, after the water mill inspection must be no bright spots, flat, no block feel. Water mill, the base film must be dry (minimum 24 hours), using more than 1000 # sandpaper with water friction, after the water mill is completely dry after the water vapor, the grinding powder must be cleaned, can be painted under the paint film , Water vapor, moisture, resulting in blistering, pinholes, whitening and other phenomena.

9, spray, brush the first time clear face "

The top coat is the top coat in the coating and plays a major role in the decorative and protective coating. The construction quality of the topcoat directly affects the quality of the entire paint film. Therefore, when the topcoat is applied, attention must be paid to the paint adjustment method, work method, and environmental finishing of the paint.

2 The floor must be free of dust. After the water is sprayed, close the doors and windows and let it rest. Place a damp rag or mop at the entrance to prevent people from entering and carrying dust. Drain well and level the floor in a clean room. For the erection of the door leaf. But brushing should maintain a good ventilation environment. If the spraying process must be used to install the exhaust fan, brushing good objects should immediately be placed in a dust-free room, until the coating is dry, if there are particles must use more than 1000 sandpaper lightly ground.

10, spray, brush the second - three times clear noodles

See the detailed process, the clear film can not be too thick, but must maintain the same thickness of the coating, so as not to uneven gloss. Each brushing surface should be smooth, and there should be no dry brush, leaking brush, falling flow, sagging and so on. After painting, use steel needles or bamboo sticks to pick up dust and particles on the surface of the coating film, then put it in a clean, dust-free room and keep it dry.

Remarks: When applying a clear top coat, a “wet-on-wet” process can be used. That is, the first time after clearing the surface and brushing the surface (20-30 minutes), there is 90% dryness. After the surface of the coated film is removed with a blade, the second degree of cleansing is immediately applied. It can save the process procedure and construction time and improve the texture and feel of the coating film.

prompt:

1, this process should not thick brush thick spray.

2. Sprayed objects should be kept dry in a dry and ventilated room.

3, under the conditions of low temperature, high humidity, can not use the "wet touch wet" method of construction

11. Finished product protection

1 Before brushing every paint, clean the floor and window sill and sprinkle water to prevent the dust from flying and affect the quality of the paint film.

2 After the water-based paint is dry for 7 days (or more than 2 weeks), the best hardness is achieved. The specific needs to be determined according to the weather, environment and other factors during construction. Door pages should not overlap. Doors with a height of more than 80 cm should not be erect. They should be placed horizontally to prevent deformation. After the construction, the newspapers and tapes used for protection should be removed as soon as possible to prevent the back of the paper tape from appearing, and the boundaries and edges of the paint film will be destroyed.

Third, the construction standards

1. Observing: The color is even and uniform. No nails can be seen at 1.5 meters. The brown eye is smooth and the wood grain is clear. There is no brushing, wrinkling, falling, wrinkling, even gloss, coating and other decoration. The interface between the material and the equipment should be consistent, the interface should be clear, and the varnish in the cabinet should be filled with ash. Such as drawers, hangers, etc., when the table is not painted on the back of the active table, sandpaper should be polished smooth.

2, hand touch: The film should be smooth, delicate, no particles, no barrier feel.

The above processes are only for reference by construction personnel and technical personnel. The specific process can be modified according to actual conditions and local construction habits.

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