Coating classroom: water-like wood paint construction process detailed

China Paint Online News Information
With consumers on furniture environmental protection requirements are getting higher and higher, water-based wood paint has been more and more consumers and furniture enterprises of all ages, then in the construction process of water-based wood paint to pay attention to what matters, today's small editor to give you a detailed summary.
I. Foreword
Water-based wood paint including wood decoration paint, furniture paint and floor paint three products, water-based wood paint, only semi-finished products, must go through a construction process, until the substrate film and produce decorative effects, can become a finished product. Its ideal decorative effect not only depends on the excellent performance of the water-based wood paint itself, but also on the reasonable product supporting construction, excellent construction technology and standardized operation under appropriate environmental conditions. Good substrate treatment, strict construction and control is to achieve high-quality engineering guarantee.
, construction process: substrate treatment - scraping putty (base material flat can be avoided) - painting primer - brushing paint.
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1, substrate treatment: wood material moisture content of more than 12%, when the hand touch has a damp feeling is not able to construct. Wood substrate must be clean, flat, can not retain oil, glue and other impurities, such as oil can be used to remove water.
2, woodworking before the substrate treatment: the use of a million primer or varnish primer closed, (the primer closed before removing surface dust, stains, especially glue.) Then carry out the construction) treatment, and then carpentry into the field construction.
3, scraping putty: in the treatment of the substrate, if the surface is rough, you need to scrape 1-3 times transparent putty, interval 2-3 hours, scraping uniform flat layer between no grinding, dry through. Scraping putty can also be arranged before carpentry is completed or after carpentry is completed. Putty does not need to be diluted, generally should be after a primer, scraping better.
paint primer: brush 2-3 times the primer interval of 4-5 hours, each time after drying (depending on humidity and climate conditions), with 800 s sandpaper polishing, primer with 10-20% water dilution.
paint: paint 2-3 times, interval 4-5 hours, each time after drying with more than 800 s sandpaper lightly polished.
4, wood before painting water-based paint, has been painted oily primer, the paint bottom needs to be polished, generally using 360 sandpaper polishing, remove dust, can be painted water-based primer, otherwise it will affect the adhesion of the paint film.
5, the construction of paint primer, for a part of the relatively rough substrate, should first use 360-400 sandpaper sanding substrate, remove the sanding dust, before painting the primer, otherwise it will affect the future construction effect, dust has entered the wood grain can be removed by brush or humidity of clean towels, cloth to suck it out.
, commonly used construction programs:
A, varnish
1, substrate treatment: dust removal, with 400 sandpaper sanding substrate, wood-printed board, wire, the use of wood-printed direction grinding, remove surface stains, especially glue.
2, paint the first primer (most sheets have been painted oily primer or wand, clean base) varnish plus about 15% of the water.
3, fill the nail eye: Note: nail eye putty is slightly darker than the plate color, not sure to try it first. After the nail eye is polished, it must be cleaned and swept with a brown brush.
4, brush the second primer, after drying to consider whether to scrape one or two putty, depending on the depth of the wood grain, the middle can not be polished.
5, brush the third primer, with 600 sandpaper to scrape the putty smooth, dry to non-stick sandpaper.
6, brush the first paint (15% of the water, adjust the use of 300 filter cloth after 20 minutes to be used, and clean the surrounding environment).
7, brush the last paint (800-1000 slush paper grinding, remove the surface particles can be).
8, transparent paint construction
substrate treatment: first do a plate primer
primer: according to the sheet wood texture fine scrape one or two times transparent putty, smooth polishing, generally in the primer color to spray-based, do two to three times colored primer each time thin spray, spray and sample color as the same, to avoid grinding.
: make varnish twice, if there are particles light grinding on it.
Special note: the plate color is not very dark plate, generally using a high solid bottom, after filling the nail eye process for construction, plus water about 25% must be dried through before the next process, dry grinding 25 degrees C, 3 hours to beat the powder, non-stick sandpaper.
B, white paint construction process:
1, substrate treatment: paint white primer once again (water 10-15% closed substrate, to prevent the color of the plate back through, if necessary, can brush the white paint substrate first brush the bottom of the treasure closed). If you don't brush the primer first, the self-adjusted putty in the wood eyes is easy to bulg when it's in the water.
2, batch scraping self-tuning putty twice (first thick, thick, second thin, thin) to find the flat, do not use pig blood ash as the bottom, because pig blood ash itself is afraid of water, after water bloating.
self-provisioning putty method: (1) cooked glue, a small amount of white latex, double fly powder or putty powder (2) transparent putty, double fly powder, a small amount of water. When tuning putty, you have to have hardness and good polishing, are controlled in the white latex addition.
batch scraping self-tuning putty method: (1) a balanced batch scraping to fill in solid wood seam eyes, dry through and dry grinding with 400 . The first time, the third time. (2) Thin batch, not too thick, to prevent cracking. (The thinner each time, the better).
3, putty dried through and smoothed with 600 sandpaper. Brush the white primer the first time to add water 10-15%, do not add too much water, dry through the sandpaper after grinding, brush the second time primer. Drying time according to the actual temperature operation, must do well.
4, spray, brush the first paint. (With water 10-15% remember that the paint must be thin spray) dry through 800-1000 sandpaper polish smooth.
5, spray brush the last paint, (add water 15% with 100 s filter cloth filtration; The actual effect of a gun walking a cross while spraying can be to paint the paint more than once before the last one.
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