Category - Windows


Window Components clear finger-joint, primed finger-joint and clear solid in pine, oak and poplar

Window Components

We stock a large range of window components in clear finger-joint, primed finger-joint and clear solid in pine, oak and poplar. We also offer many proprietary patterns on a stocking program basis. Our expertise includes recommendations on size and design in order to economize on the amount of wood required and for exact fit for your applications.

Products such as extensions, window stools and filler inserts are all available in custom sizes made from our blanks and solid stock.

Key points of using panel furniture edge bonding adhesive

Key points of using panel furniture edge bonding adhesive

With the sharp decline of the global forest area, the crisis of green plants needs to be solved, and the shortage of solid wood supply, which is undoubtedly a bad news for the furniture industry.

As the best alternative raw material of solid wood furniture, artificial board is coming to people’s vision with an irresistible trend. The prospect of panel furniture has laid a good foundation for the development of panel furniture. Looking at the furniture industry, panel furniture is becoming more and more popular.

Custom trend gives panel furniture diversification

From simple customization to intelligent space storage customization, it is not only a qualitative leap process, but also the embodiment of the wisdom of panel furniture enterprises. Under the trend of customization, the panel furniture has won the favor of the mass consumers with the characteristics of random selection of specifications, arbitrary movement and so on. A variety of combinations and arbitrary collocation is one of the highlights.

Green environmental protection concept runs through panel furniture

Compared with the traditional furniture using strong glue, the panel furniture takes the healthy and environmental protection panel as the raw material, with low formaldehyde emission. From the selection of raw materials to the process flow, it adheres to the core concept of healthy and environmental protection.

Efficient customization to improve the production efficiency of panel furniture

It only takes 5-15 days from ordering to delivery. The improvement of efficiency not only shortens the cycle, but also reduces the cost. Its high cost performance ratio is sought after by a large number of consumers.

However, the most important technology in the production of panel furniture is edge sealing! The quality of edge bonding depends on the use of edge bonding adhesive to a large extent. The use of high-quality edge bonding adhesive can not only increase the design aesthetic feeling of panel furniture, but also protect the substrate from environmental impact, integrating aesthetic and environmental protection. Today, we mainly talk about the use of edge bonding adhesive:

Key points of using panel furniture edge bonding adhesive

  1. Temperature during edge sealing

Because the performance of hot-melt adhesive is affected by temperature, so in the process of edge bonding, temperature is a very important index. The temperature of hot melt adhesive, substrate, edge bonding material and working environment are very important parameters.

On the automatic edge banding machine, because the adhesive is applied on the base material, the base material with low temperature will make the hot melt adhesive solidify in advance, so that the adhesive can stick on the base material, but the edge banding material cannot be firmly adhered, and the temperature of the base material is better to be kept above 20 ° C.

The working temperature of the edge banding machine will affect the curing speed of the adhesive. In the factory, edge sealing often occurs in the season of low temperature. The reason is that the curing speed of hot-melt adhesive is accelerated and the effective time of bonding is shortened at low temperature. If the feeding speed of the edge banding machine cannot be changed, the plate and the edge banding material must be preheated to ensure the edge banding quality.

  1. Treatment of edge bonding glue line

The glue line between the plate and the edge banding belt after edge banding will have a bad effect on the appearance of panel furniture. Too much glue will make the glue line obvious, on the contrary, it will reduce the edge bonding strength.

For the discontinuous or uneven glue line phenomenon, there are many reasons. The following factors should be taken into consideration: the opening accuracy of the plate, the edge of the plate must be kept at 90 ° angle with its plane; whether the pressure distribution of the edge banding machine roller is uniform, the size is appropriate, the direction of the pressure should be 90 ° angle with the edge of the plate; whether the gluing roller is in good condition, and whether the hot melt adhesive is even on it Whether the gluing amount is appropriate; the boards with the edge sealed shall be kept in the place with less dust as far as possible, and the dirty things shall not contact with the glue line in the finishing process.

  1. Requirements for base material and edge sealing material

It is difficult to seal the edge of the base material which is rich in grease. The oily material will reduce the affinity between the board and the adhesive, and the adhesive strength will be greatly reduced when the time is long, which will cause the edge sealing strip to fall off.

The moisture content of the board and veneer should not exceed 12%. If the moisture content is too high, the hot-melt adhesive will be cured in advance and its wettability will be reduced, so the adhesive strength will be reduced;

  1. Maintenance of edge banding machine

Stop work: when the edge banding machine is not working, the temperature of the glue tank shall be reduced to about 150 ℃. On the one hand, it can avoid carbonization of hot-melt glue under the use temperature for a long time, keep the glue tank clean, which will not cause blockage of the glue supply system and reduce the heating performance; on the other hand, when it is working again, it can quickly raise the glue tank to the use temperature. In addition, more than 2 / 3 of the rubber must be kept in the rubber tank, otherwise black carbonization will be generated around the rubber tank;

Regular cleaning: regularly clean the rubber tank and the glue roller. Excessive carbonization around the rubber tank and residues on the rubber roller will reduce the performance of the heating system and the glue supply system;

Cleaning method: if you want to remove the residual glue in the rubber can, before the edge banding machine stops working, when the glue is still in the melting state, put a T-shaped object into the glue, wait until the glue is completely cooled, and then reheat. Because the glue at the bottom and around the rubber can be heated and melted first, then most of the residual glue can be taken out with the T-shaped object. Then the mixture of toluene and methylene chloride 1:1 was used to clean the residual glue.

Technology and equipment arrangement of UV roller coating for wooden door

With the development of economy and the improvement of market, people’s consumption concept is changing from material to spiritual level. The design of household products has become the necessary soft power of every enterprise, which is particularly intuitive in the wooden door!

With the ever-changing shape and style of wooden doors, supporting services are provided for different space design. With the change of home style, wooden door design is also developing towards the following trends:

But the design is not only limited to appearance, but also involves many aspects such as function and quality. The market does not just need to be novel and good-looking. Good surface quality is very important. Without this, any of the above trends will be a flowery shelf. That is to say, in order to have a good appearance of wooden doors, the most important thing is to do a good job in surface coating! Among them, UV roller coating is of great concern.

In all the present finishing processes, roller coating plays an important role in the furniture painting. With the improvement of people’s living standard, the requirements for home furnishing and decoration are higher and higher. UV roller coating has an inestimable development prospect in furniture coating, especially in wood door coating, because of its superior performance.

The process and equipment layout of UV roller coating are determined according to the painting requirements and effects. The typical UV roller coating process of wooden door includes “one layer of coloring, two layers of putty, three layers of primer, two layers of finish”, “one layer of coloring, one layer of putty, two layers of primer”, etc. The following is a detailed description of the important process of UV roller coating for wooden doors:

  1. Plain plate sanding

After the fixed thickness, pressing (veneer) and molding of the door leaf, fine sanding is required before finishing, not only to achieve the surface flatness, but also to achieve the necessary finish. This sanding should ensure that the erected wood fiber is completely removed, and proper fine sanding can ensure satisfactory coloring effect.

  1. Water based coloring

Equipped with two roller coloring roller coater, the first roller is sponge roller and the second roller is rubber roller. The sponge roller should be pressed about 1mm more than the rubber roller to ensure the color of the chamfered edge. The pressure of the rubber roller is slightly higher than that of the coating roller which is coated with primer, so as to ensure that the spot spots left by the sponge roller can be ground smooth. The coating amount shall be controlled in the range of 10-20g / ㎡, generally determined by the coloring effect and the surface condition of the plate.

  1. Water based base color drying

After water-based coloring, the panels need to enter the hot air drying tunnel for drying. The drying temperature shall be controlled within a reasonable range. If the temperature is too low, the water in the water-based background color can not be discharged, which will affect the adhesion and clarity. If the temperature is too high, there will be more burrs on the board surface and the board will be deformed. If the water-based UV coating is used, a double lamp UV dryer shall be equipped after the hot air drying tunnel to cure the UV component in the water-based background color.

  1. Putty curing

A single lamp UV dryer is used for semi curing between the two putties, with a curing energy of 60 ^ 80 MJ / C ㎡. It is better to slightly stick to the hand after cyclization, so as to increase the adhesion of the paint film. After the two putties are filled, they are cured on the surface by double lamp UV dryer, with a curing energy of 100 ^ 120mj / C ㎡, with no stick to the hand and obvious scratches. This is not only convenient for sanding, but also can ensure the adhesion with the next primer Yes.

  1. Primer coating

The application amount of primer is determined by the overall fullness of the paint film, generally 2-3 layers of primer, each layer is 10-20 g / m2. After the last layer of primer, leveling device can be selected to increase the flatness of the paint surface and reduce the amount of sanding.

  1. Primer curing

The curing and drying of primer must be well controlled. Over curing will make the coating behind hard to adhere and hard to sand. Generally, single lamp UV dryer is used for curing of primer room, with curing energy of 60 ~ 80mj / C ㎡, and double lamp UV dryer is used after the last primer, with curing energy of 100 ~ 120mj / C ㎡.

  1. Finish coating

The first finishing coat is used for color modification, with the coating amount of 7-8g / ㎡; the second finishing coat can be applied with laser roller to increase the film fullness. Laser roll coating is generally 18-25 g / m2, after coating, the surface will leave very fine lines, it is these lines that damage the surface tension of the coating film, to ensure that the surface of the substrate is more smooth.

  1. Drying of finish paint

Generally, UV single lamp dryer is used for semi curing in the finishing coat room, with curing energy of 80-120 MJ / C ㎡; after the last finishing coat, UV three lamp dryer is used for complete curing, with curing energy of 330-400 MJ / C ㎡.

The painting operation of wooden door is the last production process in the manufacturing process of wooden door, and it is also a very important process in the process of wooden door. The painting operation of wooden door is also a very technical operation in the whole manufacturing process of wooden door. The level of painting operation, to a large extent, can reflect the manufacturing level and competitiveness of a wooden door enterprise.

Solid wood furniture waterborne paint will become a hot trend

Family is the place where people live every day, especially the elderly and children stay indoors for a longer time, so the requirements for coating are also higher. No matter how good solid wood furniture is, there is no perfect decoration and protection of paint film. At present, water-based paint with high environmental protection performance has gradually become the mainstream product. The wide application of waterborne paint in solid wood furniture can shape different types of furniture styles.

It can be seen that the application of water-based paint in solid wood furniture is becoming more and more mature. Water-based paint has its advantages and characteristics in the aspects of health, environmental protection, quality performance and construction cost of solid wood furniture. Compared with oil-based paint, it is more suitable for home use. Compared with environmental protection and health, waterborne paint has more advantages.

Environmental protection furniture has become the mainstream, solid wood furniture waterborne paint has become a hot trend, which is mainly related to the following advantages of waterborne paint:

  1. Non toxic and environmentally friendly

Water based paint is a high-tech, non-toxic and tasteless environmental protection product with water as diluent solvent and ultra-low VOC content. The organic solvent (banana water and Tianna water) is used as diluent for oil paint, containing benzene, toluene, xylene and their derivatives. In addition, curing agent (including TDI) is also used for polyester paint, so the toxicity of polyester paint is higher, followed by nitrocellulose paint.

  1. Safety

Water based paint uses water instead of organic solvent, and its products are safe and non combustible. It greatly reduces the risk factors and troubles in the production and circulation links. And the oil paint contains benzene, xylene, acetone, solvent gasoline, Tianna water are highly flammable and explosive goods.

  1. Good flexibility

The flexibility of water-based paint means that it can have a good adhesion to the wall, and it will not fall off easily, so as to reach a perfect combination point, which is also the most surprising place among the advantages and disadvantages of water-based paint.

  1. No pungent smell

Water based paint uses water instead of organic solvent, its product will not produce any irritating smell when it is applied. And oily paint contains organic solvent, will be in the process of brushing and drying volatilization to the air, directly stimulate the human body’s sensory organs.

  1. You can move in after painting

The water-based paint is non-toxic, tasteless, environmentally safe; you can move in after brushing. Because the organic solvent of oily paint will volatilize harmful gas in the process of drying, the houses decorated with oily paint can not be directly occupied after painting, and need ventilation for a period of time.

  1. Wear resistance, yellowing resistance and durability

The water-based paint adopts advanced film-forming and self crosslinking technology to make the surface of the paint film hard, wear-resistant and flexible, and won’t turn white due to collision; moreover, the paint film remains clear and transparent for years; the UV accelerated aging is tested according to the national standard for 168 hours without yellowing, with good durability. However, the oil paint is easy to collide and turn white, easy to turn yellow and unable to maintain the effect for a long time.

  1. Easy construction

The water-based paint is only diluted with water, instead of adding Tianna water or curing agent, which is easy to be used in direct construction; while the oil-based paint is added with Tianna water or related curing agent, which must be in accordance with the fixed proportion, so the oil-based paint needs the guidance of professional personnel in the construction process.

The water-based paint of solid wood furniture uses water level solvent, does not contain benzene, toluene, formaldehyde, free and other harmful substances and toxic heavy metals, does not volatilize irritating smell, is harmless to human body and does not pollute the environment. In addition to safety and environmental protection, the advantage of water-based paint is to make the home paint film full and crystal clear, and to overcome the long-term problems of yellowing and cracking of paint film, so the application of water-based paint for solid wood furniture is inevitable.

Quality standard of each working procedure of woodworking workshop for solid wood production process

As we all know, solid wood production process is very complex. In order to ensure the quality of products, each enterprise will compile the corresponding process standards to guide production The requirements and quality standards for materials in solid wood production and wood processing are collected, including the quality standards for each working procedure of the woodworking workshop, the nine inspection standards for the product quality of the paint workshop, and the seven inspection standards for the product quality of the packaging workshop.

This article mainly introduces the quality standards of each working procedure in the woodworking workshop, so as to provide selective learning and reference for the relevant personnel of the enterprise.

Quality standard of each working procedure in woodworking workshop

  1. Opening quality requirements

It is required to avoid big dead joint, core material, crack, black water mark, moth, decay, the length of broken material shall be within 5mm-10mm according to the specified dimensional tolerance, and the vertical tolerance of cross section of parts shall be within 3mm.

Main control points: surface quality, length and thickness.

  1. Quality requirements for plane plane

The parts must be planed along the direction of wood grain during processing, and there shall be no deep reverse grain pinhole and coarse burr. The side angle is 90 degrees. The planed edge surface must be flat without concave convex, knife jumping and wave.

Main control points: surface quality, angle, size, plane surface distinction.

  1. Quality requirements for use of press plane

The parts must be processed along the wood grain texture, and the quality of one-time planing shall be controlled within 2 mm. The angle tolerance of solid wood parts is ± 1 degree The deformation tolerance of solid wood parts shall be controlled within 0.5mm within 500mm, within 1mm within 500-1000mm, and within 1.5mm above 1000. Dimension tolerance of solid wood parts shall be controlled within ± 0.8mm.

Main control points: surface quality, chipping, knife jumping, angle, deep hole burr, deformation, etc.

  1. Panel quality requirements

Use the specified glue instead of other glue. In color matching, the panels with the same color or similar color, the same wood and the same wood grain direction must be assembled as a whole, and the water content difference between any adjacent parts and panels shall not exceed 3 degrees.

Selecting high quality panel glue can speed up drying, enhance bonding strength, improve water resistance and weather resistance (hot and cold).

Top vertical panel glue

Stitching effect

The size of panel line shall be controlled within 0.3mm, and the glue shall be evenly distributed. After the panel is unloaded, it must be stacked for 24 hours under normal temperature before entering the next process.

  1. Quality requirements for single side saw

The tolerance of the real dimension of the parts shall be controlled within 0.3mm. The flatness of the longitudinal surface of the parts to be spliced shall be controlled within 0.2 mm. There shall be no obvious saw marks on the longitudinal section. When the solid wood plate is longitudinally cut, its warpage shall not exceed 5mm.

  1. Quality requirements for band saw

According to the standard of die marking, the distance of saw line marking shall be controlled about 3-5mm outside the line during bending (Note: the actual die is 5mm larger) The surplus of the cutting head is 3-5mm.

  1. Tenon quality requirements

The tolerance of tenon length shall be controlled within (0-0.5mm) during part processing. If there is a tenon at the end of the processing surface, the tenon shoulder at one end shall be processed as the basis, and the tenon at the other end shall be processed to ensure the inner space. The hollow size of the tenon of the machined parts shall be controlled within ± 0.5mm.

If the tenon position of the part is in the process of machining, it must be ensured that the upper and lower end faces are 90 degrees vertical after machining. Processing of tenon position and tenon should refer to the process assembly structure to sort out the front and back processing.

  1. Quality requirements for use of lifting and drilling (or electric drilling)

Parts processing, to distinguish up and down, left and right, texture direction matching drilling. Deep hole depth is allowed to be within ± 1mm, hole diameter is ± 1mm, hole position deviation is within ± 0.5mm, perpendicularity deviation is within ± 0.2 degrees, screw hole depth tolerance is within ± 1mm, and all surfaces shall be free of cracks, burrs and other phenomena. If multiple hole positions are processed at one time, it must be ensured that the depth line of hole position is unified, and the hole diameter and process drawing are one to one.

Main control points: positioning size, hole diameter, hole depth, hole position perpendicularity, hole position deviation, surface quality, front and back sides, left and right symmetry, etc.

  1. Quality requirements of machine sand

Before assembly, the parts shall reach three levels of fine sand, which shall be free from roughness, skip marks, reverse grain machine sand marks, pinhole marks and other phenomena. The damaged or uneven and moldy parts shall be filled and sanded with AB glue; all knife shapes, process grooves and circular arc edge machine sand shall be smooth and free from deformation, and the parts assembly interface shall be sanded; the parts with arc edge position shall be sanded along the grain without reverse grain burr.

Main control points: unevenness, sand mark, smooth arc of pinhole, no deformation, visual inspection and good hand touch.

  1. Quality requirements for veneering and edge sealing

The edge sealing of the same set of parts shall be made of the same kind of wood skin. Wood veneer for edge banding shall be free of defects. There shall be no looseness and bubbling after edge sealing. In the process of edge banding, it is not allowed to scratch the veneer. Pay attention to protect the veneer when trimming.

Main control points: the surface is flat, the edge is not loose, and there is no bubble.

  1. Quality requirements for hand sand

All products shall be sanded along the direction of the grain of wood grain and shall not be cross sanded; all product parts (arc-shaped and circular parts) shall have smooth, smooth, fresh and even edges and corners, and the lines shall be uniform in thickness and without deformation error controlled within 1 mm; the parts with good sanding shall be free of wormholes, holes, burrs, undercuts, coarse cross sand marks or sand marks, and without missing angles Sand black, sand through, sand concave or deformation and other undesirable phenomena, after sanding, rough fuzzing, tearing and other phenomena are not allowed.

  1. Quality requirements for assembly and final assembly

When assembling the components, it is necessary to see whether the drawing requirements and the specifications of the supplied materials are consistent with the drawings. The edge strip shall be divided into front and back side matching and matching in the same color. When assembling the frame, it is necessary to reinforce the back side with clamps and punch the nails. When there is a knife shaped nailing, it is not necessary to nail too much to avoid hitting the knife. Before installing the product components, the parts must reach level 3 fine sand. If there is a knife shaped side plate and cabinet door core plate, the knife shaped position shall reach level 4 fine sand Sand, feel smooth without dents before assembly.

Main control points: overall dimension, diagonal, empty dimension in the frame, cabinet vertical, wood grain upward, gongs and nails not exposed, etc.

7 inspection standards for product quality of furniture packaging workshop

7 inspection standards for product quality of furniture packaging workshop

In the last period, we shared the quality standards of various processes in the woodworking workshop of solid wood production technology, and in this period, we will share the inspection standards of product quality in the packaging workshop. Packaging is in the last link in the whole furniture production, but it is also a crucial link. A good packaging of furniture products can improve the added value of products, and at the same time enhance the image of enterprises.

I. dimensional tolerance

  1. The allowable tolerance of the net material specification of each part of the product is + / -0.5mm.
  2. The tolerance of abnormal parts is allowed to be + / – 1-2mm.
  3. The overall specification tolerance of the finished product is allowed to be + / – 5mm.

Two, paint

  1. Visible surface (front side): according to the color board or the contract, there is no obvious color difference between the paint color and the color board, and the surface is required to be fresh, flat, free of obvious coarse sand mark, smooth and poor in quality within the acceptable range.
  2. Surface A shall be free of sagging, pinhole, bubble, pockmark, exposed bottom, whitening and burr.
  3. The brightness shall meet the specified requirements, and the back (invisible / concealed place) must be clean and fresh.
  4. The touchable part shall be smooth and smooth without burr or exposed base material,
  5. The paint materials used shall meet the national environmental protection standards.

Three, material

  1. Visible surface (front side): no crack, burr or rot is required.
  2. There is no obvious deformation and unevenness on the surface of door, cabinet and desktop (except D08, no adverse defects such as reverse lines).
  3. The back (invisible / concealed place) shall be smooth and the material shall be acceptable.
  4. Use wood-based panel to meet the national environmental protection standards.

IV. product process

  1. All splicing, gluing and other parts shall be free of cracks, degumming and visible cracks.
  2. There is no obvious deformation at the important parts such as door, pumping surface and cabinet surface.
  3. Flexibility and firmness: all moving parts shall be able to push and pull flexibly, and the visible gap at the joint in place shall not be more than 1mm; the mortise or bolt connection parts shall be firm and reliable, and shall not be loose or slotted when shaking and using (the door panel switch shall be flexible, convenient, without abnormal sound, and the hinge installation shall be firm when using correctly).
  4. The suction bucket shall be tight and firm, without loose sound in knocking, with the same width before and after, and the diagonal error within 1mm.
  5. The sliding rail of drawer shall be pushed and pulled smoothly without noise.
  6. Keep your feet flat.
  7. The tail of nails at all places requiring screw reinforcement must be at least 2-3mm deep into the wood.
  8. The door joint, face joint and four side joint shall be consistent and symmetrical, and the gap shall be within 1.5-2.5mm (the allowable tolerance is + / -0.5mm, which is acceptable).

V. trial assembly of finished products

  1. Finished product test group: the overall test group of the product shall be assembled according to the assembly sequence of the instructions according to whether its structure, hardware and color meet the standards.
  2. When the drawer is pulled out, the slide rail shall be smooth, and the drawer length of the whole cabinet shall be the same.
  3. All packaged products must be matched left and right before packaging.
  4. When assembling, the hardware shall be assembled in place, and there shall be no small group or missing group.
  5. All door joints and draw joints shall conform to the standard of technical department (2mm).
  6. The parts with radian are consistent with the radian requirements of relevant parts, and the error is acceptable within 1-1.5mm.

Six, packaging

  1. The packed product boards shall be reasonable and compact, not loose, and the safety protection measures shall be in place for the parts that may collide, without missing the relevant parts, the right and left matched packages, without missing the relevant parts such as hardware and foot nails.
  2. Each product must have a trademark.
  3. All hardware accessories and assembly drawings must be complete.
  4. The packing box shall be clean with complete parts and accessories.
  5. It is forbidden to pack the defective products.
  6. Handle with care in the process of handling after packaging, and do not hurt.

7, outer box

① the writing of cartons shall be clear, correct and eye-catching, and the cartons shall be kept clean, dust-free and pollution-free.

② the type of products in the box is consistent with the marks of the outer box.

③ when sealing the box, the tape shall be flat and free of wrinkles, the length of the paste shall be the same, the packing belt shall be straight and free of skewness, and the appearance of the outer box shall be kept beautiful and free of tape floating.

With the continuous development of woodworking technology, the traditional manual packaging gradually faded out of our sight, the emergence of the concept of machine replacing human, making the intelligent and automatic packaging line widely used. The neat packing line helps to reduce the transportation cost, the standard packing line can effectively transmit the correct information, and the beautiful packing line can improve the corporate image.

In the next period, we will launch the quality inspection standard for the paint workshop of solid wood production technology. Please continue to pay attention to us!

Common problems and solutions of waterborne paint for furniture

Common problems and solutions of waterborne paint for furniture

Waterborne paint is a new type of coating material. Its biggest feature is that water replaces the organic solvent in the oily paint as the dispersion medium. Compared with the oily paint, it does not use organic solvent, contains no harmful substances such as benzene, toluene, xylene, formaldehyde, etc., is non-toxic, non irritating, resource saving and more environmentally friendly. In order to have a principled understanding of the performance and construction of waterborne paint, it is necessary to fully understand its film-forming mechanism.

I. different film-forming mechanisms of water-based single and two-component coatings

The water-based coating is mainly composed of water-based resin, pigments and fillers, additives and water. Its film-forming process and solvent coating have completely different mechanisms and are relatively complex, mainly because of the special structure of water-based resin and the existence of water.

After the water-based one component coating is applied on the surface of furniture, the moisture begins to volatilize. With the decrease of water content, the arrangement of dispersed latex particles becomes more and more compact from evacuation. Under the action of capillary pressure and surface tension, the latex particles are extruded and deformed, and then they fuse and diffuse with each other to form a film.

In the process of film formation, the reaction of polyisocyanate and water, the coacervation of polyol and polyisocyanate particles, the reaction of polyol and polyisocyanate and so on will affect the whole drying process of the two-component waterborne coating.

It can be seen that “water” is the lifeblood of water-based paint. What problems will be encountered in the construction process of using water-based paint? Next, we will classify these problems and analyze the causes, and give solutions.

II. Common problems and solutions of waterborne wood paint

1. The paint film is wrinkled or cracked

Problems: under high temperature, the surface of the thick water-based paint film dries rapidly to form a film, while the thick inner layer dries slowly. During the drying process, the flow of the paint produces poor tension, resulting in uneven surface of the final film, i.e. wrinkle; or directly leading to the cracking of the primer film.

Solution: during the construction, do not apply thick paint once, but thin paint several times; at the same time, keep the furniture temperature above 15 ℃ and humidity below 70%, in a well ventilated environment, let the paint film dry normally.

2. Poor adhesion between paint layers

Problems: the direct cause of poor adhesion between layers of paint film is that there is no grinding between base materials or coating during construction, resulting in poor adhesion (because water-based paint is physical film-forming, which depends on surface friction to improve adhesion); the indirect cause is high temperature in summer, and the time required for the interface between wet paint film and dry paint film to form a firm layer is insufficient, so that the adhesion is affected.

Solution: the construction personnel are required to fully polish each layer to enhance the adhesion during construction, and the construction should be arranged in the morning and evening to ensure the internal quality of the product.

3. White paint layer

Problems: it is mainly caused by too much humidity in the construction environment and too thick film during the construction. Because of the high temperature in summer, the air humidity in some areas is relatively high. The surface drying time of the paint layer accelerates with the increase of temperature, but the actual drying time is relatively slow; the painter may ignore the actual drying time in the construction process, and immediately apply another layer of paint after the surface drying of the paint layer, resulting in the phenomenon that the bottom paint layer is not completely dry and the paint layer is white.

Solution: the construction interval shall be well controlled, and the next process construction shall be carried out under the condition that the paint layer is dry.

4. Paint layer flow hanging

Problem: the main cause of the problem is too much water, too thin, too thick painting, or too much air humidity, the paint layer drying slowly, resulting in sagging.

Solution: during construction, pay attention to adding appropriate water to dilute, thin coating for many times, and select low humidity weather for construction.

At present, the automatic equipment is more conducive to the furniture spraying process, so that the enterprise can produce efficiently and quickly, at the same time, it also greatly reduces labor, and is more safe and environmentally friendly. Now, there are more mature machines in the market, such as reciprocating machine, five axis machine, spray machine, vacuum spray machine, etc.

Line vacuum spraying

The paint utilization rate of line vacuum is over 97%, which is about 60% less than that of manual spraying. Meanwhile, during the working process, the atomized paint is recycled in the quasi closed space, without leakage and emission.

Sharp vacuum spraying production line

1. Green environmental protection: vacuum spraying can quickly and evenly adhere the paint to the surface of the line, without waste and pollution;

2. High processing efficiency: shorten the processing cycle of the line, reduce the flow time of the workpiece, and improve the processing efficiency;

3. Wide range of application: vacuum spraying machine can be widely used in the painting of furniture and cabinet, process composite door, door jamb line, skirting line, curtain rod, mirror frame and other products (waterborne paint, UV paint, wood wax oil, preservative).

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Characteristics of wood-based panel furniture

Characteristics of wood-based panel furniture

Wood-based panels are important materials for furniture and interior decoration. Commonly used are large core board, plywood, decorative panel, fiberboard, particleboard, Poly board, birch board, fire-proof board, plastic paste panel, paper decorative panel, etc. As natural wood inevitably exists and produces various defects in the growth process, wood processing also produces a large number of corner wastes in order to improve the utilization rate of wood and improve product quality, wood-based panels made from wood and other plant debris and fibers have been widely promoted and applied.

Wood-based panel furniture is unique and easy to load and unload. Because the raw material is man-made board, not natural, it is all through artificial transformation, so in this process will be more considerations of human factors, so products can better reflect the characteristics of humanization. artificial

Plate furniture is usually made of a combination of various metal hardware. It is very convenient to disassemble and assemble, and can be disassembled many times.

Wood-based panel furniture special II, personalized characteristics. People can customize wood-based panel furniture according to their preferences, including the above color, pattern, etc. Customers can handle according to their own wishes, very personalized, but also not easily deformed.

Wood-based panel furniture, the third, anything is two-sided, wood-based panel furniture is no exception. Wood-based panel furniture is relatively weak in environmental protection performance, which needs further improvement by producers. With the continuous development of science and technology, the formaldehyde content in rubber is decreasing, the pressing level of wood-based panels is improving, and the environmental protection of wood-based panels is gradually guaranteed.