1. The main construction technology is to clean the base → fill putty, locally blow putty and smooth → blow putty and smooth for the first time → blow putty and smooth for the second time → brush closed primer → brush paint for the first time → repair putty and smooth → brush paint for the second time → polish.

2. Key points of construction Grass-roots treatment is the key link to ensure the construction quality, among which ensuring that the wall is completely dry is the most basic condition, and it should be placed for 10 day. 3. Precautions (1) The putty shall be suitable for the coating performance, solid and firm, and shall not be pulverized, peeled or cracked. Use waterproof putty in wet places such as toilets. (2) The coating liquid should be fully stirred. If the viscosity is too high, it should be added appropriately. If the viscosity is too low, a thickener should be added. (3) The construction temperature is higher than 65438 00 degrees Celsius. There can't be much dust in the room. It's best to avoid rainy days.

Construction technology of wall paint

I. Substrate treatment

1. Maintain the newly-built wall for 3-4 weeks to ensure that the PH value of the wall is ≤ 10. Remove oil, floating dust and loose particles from the wall, if the wall

If the body is too alkaline, you can clean the wall with 5% dilute hydrochloric acid, then rinse it with clear water and dry it fully. Brush with sealing primer (which can be diluted appropriately) once, and dry the exterior wall for 24 hours. 2. Old wall-Remove the old paint layer or loose layer with wire brush or other tools. Use detergent to remove oil, mold, moss and other impurities on the surface of the old wall. Brush with sealing primer (which can be diluted appropriately) once, and dry the exterior wall for 24 hours. 2. Paint putty.

1. Scrape the wall with putty and fill up all holes, cracks and burrs.

2. Sand the uneven surface with sandpaper to make the wall smooth and remove the floating dust on the surface.

polish

After the putty layer is completely dried, scrape the sealing primer twice. It is suggested that the construction method is spraying, brushing or roller coating, and the recoating time is 6-8 hours. After the primer is completely dried, the wall surface should be completely covered and no frost is allowed.

Step 4: surface coating

Before painting the top coat, ensure that the construction surface is smooth, clean, dry and firm. Brush the company's environmentally friendly latex paint topcoat two or three times. The construction method can be roller coating, brush coating or spray coating, or a combination of several methods, and the recoating time is two hours. 5. Practical tips.

Before finishing wall painting, five basic features should be ensured.

Solid, flat, dry, neutral and clean. Pay attention to that the water content of the wall foundation shall not be greater than 10% and the PH value shall not be greater than 10.

Measurement method of moisture content: it can be roughly judged by covering the film. The method is: cut the plastic film into 300MM square pieces and cover it on the surface of the base at night. Seal the four sides with adhesive tape, pay attention to make the film have a certain degree of relaxation, and observe whether there is obvious condensation on the inner surface of the film the next afternoon to judge whether the water content is too high.

Test method of PH value: firstly, soak the lint with clean water, then lightly press it on the specially measured base surface to absorb the alkali content of alkali. After 1 min, measure the wet cotton in contact with the base surface with a PH pen to know the pH value, or directly measure it after wetting the wall surface with water.

Matters needing attention in construction

1. When using rollers, try to use high-quality rollers. A bad roller will not only brush unevenly, but also leave some roller marks and roller fibers on the wall.

2. Generally, exterior paint does not need to be diluted, but it can be appropriately diluted according to the viscosity of the product, but the amount of water generally used for dilution cannot exceed 20%. Excessive dilution will lead to wall powdering and sagging. Dilution of interior wall latex paint should be appropriate, and the general water addition is 20%-30%. Excessive dilution will lead to powdering of paint film, which will affect the texture, scrub resistance and hiding power of paint film.

3. The last putty of the external wall should be put in place at one time. If the wall area is too large, it is best to have a grid line, which can release the air pressure on the wall and reduce the cracks on the wall; Secondly, the area is too large, and it is difficult for the wall to be completely flat. The grid line method is used to divide a large area of the wall into small areas to make it relatively flat visually.

4. During construction, when the air humidity is more than 85% and the ambient temperature is not lower than 10℃, the external wall should be avoided. Interior wall coating should not be lower than 5℃, so as not to affect the quality.

5 If a light-colored topcoat is selected, in order to ensure the same color after painting, the paint with the same color number is generally mixed completely in advance and used up at one time after mixing evenly.

6. Exterior wall coating should be avoided in the construction under strong wind or dusty weather.

7 keep the construction tools and the surrounding environment clean.

8 oily exterior wall and don't use water-based primer as primer.

Wood structure technology

1. Check the quality of carpentry

Check nail holes, seams, offset printing, handprints, pencil marks, gouges, stains, etc. For serious damage and indelible stains, the owner should be informed in advance, and the construction can only be started after the owner agrees.

2. White blank processing

Polishing with 320 sandpaper, scraping with a blade, scrubbing with thinner, etc. Remove stains from the white blank.

Three. sample

The curing agent is scraped with the scraps of white decorative board. The yellowing of the board surface not only proves that the coating is not bleached, but also proves that the board is bleached.

Four. deal with

If it is confirmed that the paperboard has been bleached, the treatment method is as follows:

1. Wash the board repeatedly with warm water until the residual bleach is completely removed, and then paint it.

2. Choose products that are resistant to yellowing (such as the benzene-free luxury series produced by our company).

5. Sealing: brush the sealing primer once.

6. Putty: use transparent putty or gypsum to fill the wooden hole with thin scraping or brushing, and then thoroughly polish it after drying.

7. Clean the environment: remove dust and garbage from the walls and floors. In addition to the wooden floor, the floor should be properly wetted with water, and the dust on the paint surface should be removed with clean cotton cloth.

8. Primer: filter in the place where the paint is mixed, and apply the primer twice, with an interval of 5-8 hours for each construction.

Nine. revise

Polish the primer with 320 sandpaper, then finely grind it with 500-800 sandpaper, and remove the dust on the coating surface with slightly wet clean cotton cloth.

Top coat

Filter the mixed paint, clean the environment and workpiece, and apply the top coat twice. The top coat can be polished by wet-to-wet process, or the interlayer can be polished by 1000 sandpaper to remove dust.

XI。 maintain

Workpieces coated with topcoat need to be cured for 48 hours. 12. Polishing and grinding: If the paint film needs special luster and feel, the construction specification of 1000 varnish can be used after the paint is completely dried.

I. Construction Procedures

Internal acceptance → material polishing (360 # sandpaper polishing and powder spraying) → water-based back cover (1-2 times) → supplementary color ash (color ash polishing, 600 sandpaper polishing and powder spraying) → first brush bottom (secondary patching, color modification, polishing with 600 # sandpaper and powder spraying) → batch scraping. Brush the surface for the first time (1000 # sandpaper for dry grinding and dust sweeping) → spray the surface for the second time and the third time (filtered by 200-300 # screen) → protect the finished product.

Second, the construction technology

1, internal acceptance

(1) After the veneer is delivered to the construction site, the woodworking team leader shall check the quality of the veneer together with the project manager. If there are quality problems such as undercoating, hollowing out and large color difference. You should immediately notify the material personnel to return the goods. If there is no quality problem, notify the painter to brush the back cover of Lubo (or Ke Mei) brand. Before painting the back cover, polish it with 360 sandpaper to remove stains. When painting the decorative board, brush one piece first, and then brush a lot after the owner has read and approved it. It is forbidden to use other types of work instead.

Note: If the weather temperature is too high, you can dilute the back cover with alcohol and paint the decorative board. Because the temperature is too high and drying is too fast, brush marks may appear.

(2) Before varnish construction, internal acceptance shall be carried out for the carpentry facing project to check whether the convergent line of the facing plate is sunken; Check whether the pattern nails and shooting nails on the decorative board are exposed in a large area, whether they are degummed with the base, whether the "corner splicing" production is in place and consistent, and whether there is any damage; In particular, it is necessary to check the large-area decorative board for damage and scratches. If there are any hardware accessories, such as hinges, hinges, magnetic bumps, handles, door handles. When the carpenters leave, they must all be unloaded, bagged with white latex and put into empty barrels for protection, and handed over to the painter for safekeeping when the painter enters the site. Hardware accessories that cannot be unloaded due to process reasons, etc. Such as three-stage silent drawer track, lock core, lock box, sliding door track, etc. When the painter enters the site, he must do a good job of protection.

2. Material polishing

Use 360 # sandpaper to polish the wood grain. It is forbidden to polish the veneer with a sand rack. The key points are pencil marks, rust, stains, dust and white latex. If there is any place on the decorative board that cannot be polished with white latex, gently clean it with a blade (or polish it with thinner). When polishing, the trademark on the decorative board must be removed. When grinding, special attention should be paid not to scratch and wear through the surface of the decorative board, and try not to scratch the "corners". When grinding, if you encounter bare nails and grain nails, you need to nail them carefully into the plate with steel nails, and the nail holes cannot be enlarged; After polishing, clean the dust with a brown brush.

3. Brush the water-based back cover (1-2 times)

Try not to add water to the water-based back cover. If it is sticky and difficult to brush, please dilute it with alcohol.

For water-based back cover, the panels need to be attached, and the interlayer should be covered with wax paper or film.

Tip: (Don't use the brush for water-based back cover to brush water-based primer or topcoat)

4, complementary color gray

(1) Repairing colored ash is to repair nail holes, which is a key link in decorative varnish. Use 80 1 glue (white latex or other water-based glue)+gypsum powder (fully cooked)+shuangfei powder+colored powder (the color depends on the color of the decorative board) to make the background gray. (Note: the wood grain of the decorative board has a background color, that is, the background color, and then the surface color is above the background color, that is, its grain), and then the surface color is adjusted to gray according to the surface color of the decorative board. Sometimes the particles have many colors or different shades of color. When the modulation surface color is gray, multiple colors must be assigned according to the particle color. When making water-based paint, the color of putty is slightly darker than that of plate.

(2) Before large-scale ash replenishment and large-scale repair, small-scale color test and color matching are needed. No nail holes can be seen at the standard1.5m. When filling with ash, it should be slightly higher than the board surface, and the smaller the filling area, the better.

(3) After drying, use 600 # sandpaper to polish along the grain. When polishing, there should be no residue on the surface. After polishing, clean with a brown brush.

5. The first brush bottom.

1. Mix the primer according to the proportion in the product manual, and mix the paint fully and evenly. Stir gently and evenly clockwise, not at high speed or in the opposite direction, so as not to damage the reaction chain of paint solution. Stir evenly and let stand for 20 minutes before use to avoid defects such as whitening, foaming, pinhole and uneven gloss of the coating. The undistributed waterborne wood paint should be sealed immediately and placed in the place where materials are stacked.

2. Brush with a special brush for water-based paint, from top to bottom along the wood grain, from inside to outside, from difficult to easy to brush. When painting, generally use the method of direct grip, fingers should not exceed the iron piece, fists should be clenched with both hands, wrists should be flexible, and hand and body movements should be coordinated when necessary. When dipping paint, don't dip all the bristles, just dip them into 2/3 of the special brush. After dipping, pat the sides of the paint brush a few times in the paint bucket, so that the paint can be photographed on the head of the bristles to avoid falling off when brushing. At the beginning, make the paint brush as vertical as possible, and brush it with a bristled belly. At the end of the painting, gently brush with the front end of the bristles.

6, batch scraping transparent putty 1-2 times

This process is an option, depending on the wood grain depth of the veneer. Its main function is to fill wood grain. If the wood grain is deep, it is difficult to fill it with primer, so it is necessary to scrape transparent putty in batches, or scrape self-adjusting putty (red, yellow and black powder +600 mesh talcum powder+white latex). The putty layer does not need polishing. If there are particles, residues or pollutants, sand them off with sandpaper. After grinding, the wood grain is full and the finish is smooth and flat.

7. Brush the bottom for 2-3 times.

The construction method refers to the first bottom cleaning procedure. After the coating is dried (6 hours), the missing, empty and nail holes are repaired with colored ash at one time. If the color of nail eye is not up to standard, it should be supplemented with color essence or dug out. After drying, use 800 # sandpaper to polish along the wood grain, and then use brown brush to sweep the dust after polishing. The number of times of bottom cleaning construction depends on the depth of capillary holes on the board. If the panel with deep pores needs to be primed more often, because the main function of the primer is to provide fullness and support the topcoat.

8. Amendment

A, polishing is to make the next coating better match with the previous coating, and increase the adhesion, smoothness and feel of the paint film. Therefore, the inspection after polishing must be bright, smooth and not blocked. Waterborne primer is easy to dry and has good polishing performance.

B, you can also water mill, but try not to choose. Water mill is also called fading or grinding. As the name implies, water milling is to dilute the gloss of the paint film, so that the next layer of paint film can better match the previous layer of paint film, and increase the adhesion, smoothness and feel of the paint film. Therefore, the inspection after water milling must be smooth and smooth without bright spots. When polishing, the base paint film should be light and transparent (minimum 24 hours 9. Brush the surface for the first time. "

(1) Topcoat is the topmost coating, which plays a major role in decoration and protection. The construction quality of topcoat directly affects the quality of the whole paint film, so we must pay attention to the paint mixing method, operation method and coating environment during topcoat construction.

(2) The ground must be clean. After watering, close the doors and windows and let it stand. And put a wet rag or mop at the door to prevent people from entering and leaving to bring dust. In the dust-free room, arrange the wooden squares and evenly pad them. So as to facilitate the shelving of the door leaf. However, a good ventilation environment should be maintained when painting. If the spraying process is adopted, an exhaust fan must be installed, and the object to be sprayed should be put into the clean room immediately. After the coating is dried, if there are particles, it must be cleaned with 1000 10 and sprayed for the second time-three times.

For the detailed process, the transparent coating should not be too thick, but the coating thickness must be consistent to avoid uneven gloss. The surface of each painting should be smooth, and there should be no dry brush, brush leakage, sagging and sagging. After painting, clean the dust and particles on the surface of the coating film with a steel needle or bamboo stick, then put it in a clean room for protection and wait for drying.

Remarks: When applying topcoat, the "wet-to-wet" process can be adopted. That is to say, after the first cleaning, the surface is dry (20-30 minutes) and the dryness is 90%. After the particles on the surface of the coating are trimmed with a blade, the second cleaning can be carried out immediately, which can save the working procedure and construction time and improve the texture and feel of the coating.

Tip:

1, this process should not be thick brush and thick spray.

2. The sprayed objects should be dried in a ventilated and dry room.

3. In the weather with low temperature and high humidity, the construction method of "wet to wet" cannot be adopted.

1 1, finished product protection

(1) Before each painting, clean the floor and windowsill and sprinkle water to prevent dust flying and affect the quality of paint film.

(2) 7 days (or 2 weeks) after the water-based paint is dried, the construction standard.

1. Observation: the color is uniform, no nail holes can be seen at 1.5 meters, the wood grain is smooth and brown, the wood grain is clear, without brush lines, edges and corners, sagging and wrinkled skin, and the luster is uniform; The joints between paint and other decorative materials and equipment should be consistent, and the interface should be clear; Whether the varnish in the cabinet is filled with ash. Such as drawers, clothes hangers, etc. When the back of movable tables and cabinets is not painted, it should also be polished and smooth.

2. Touch: The coating should be smooth, fine, particle-free and touch-free.