Water-based paint evaporates slowly during the drying process, and the drying time is longer, which is prone to whitening and sagging, and greatly reduces the coating production efficiency. Products using water-based paint must be of good quality. The following conditions must be met at the same time: the illuminance should be controlled at 750 ~ 1500 lx; the temperature should be kept at about 22 ~ 26 ℃; referring to the current hot air drying method, the hot air temperature should be at 40 ~ 60 ℃; the relative humidity is controlled between 55% and 75%RH (about 65%RH is the most appropriate). To use water-based paint dryers based on heat pump technology, the air ducts must be reasonably arranged to avoid ripples on the paint surface!
Under natural conditions, the temperature, humidity and wind speed are variable, and the drying speed and film quality are unstable. If under the condition of high temperature, high humidity or high humidity, the coating is easy to turn white and the drying speed is slower. Therefore, the water-based paint drying room of the water-based paint dryer has become a standard configuration for furniture companies. The water-based paint heat pump drying and dehumidifier uses a heat pump to heat, using the principle of forced convection, using hot air at a temperature of 38°C to 55°C as a heat carrier to transfer heat energy to the coating on the surface of the workpiece, and the coating is cured after absorbing energy The heating and drying method of film formation can significantly accelerate the drying speed of the coating, and has the characteristics of strong compliance. It is a drying or drying method that is widely and commonly used today. It is an energy-saving, environmentally friendly and stable quality water-based paint drying. solution.
Water-based paint dryers based on heat pump drying and dehumidifier technology include: drying, dehumidification, cold drying, microcomputer control, and automatic operation. The equipment drying furniture oily paint and water-based paint has the advantages of energy saving and environmental protection.
1. The highest temperature reaches 75℃, and the furniture temperature is usually only within the range of 26-35 degrees, which fully meets the requirements
2. The lowest temperature can reach 8℃. In Xiamen, the ambient temperature is too high, which will affect the paint drying of the panels. The heat pump cooling function reduces the temperature in the oil room to about 26℃. This ensures the effect of the board.
3. Although the wind blown by the unit is very large, we use the decompression system of the wind pipe to form a branch pipe to reduce the air volume and meet the requirement of small air volume in the oil room. At the same time, it also meets the uniformity of the drying room temperature. Arrange the air ducts reasonably according to the area and height of the water-based paint drying room, so that the temperature of the whole drying room is even and the air distribution is balanced. Regardless of whether it is air intake or return air, air ducts and air outlets must be set in a reasonable and balanced manner, which is related to the drying quality of the primer and top coat of the furniture in the drying room.
4. Install the water-based paint dryer host. The heat pump water-based paint dryer host must be installed in place according to the drawing requirements. Before installation, position the host and wall panels to ensure that the air outlet and the return air outlet are not blocked, and the host The seam is evenly reserved between the storage board and the storage board, so that the backside is glued and sealed. The host is generally placed on the narrow side of the board room. It is usually necessary to install a seat cushion, a steel groove about 10 cm underneath, and install a rubber cushion to absorb shock.
5. Install the air duct and drain pipe. The position of the air duct is determined according to the position of the air outlet and the type of circulating air. The size can be a little larger than the return air outlet to ensure that there is no big gap after the sealing is connected. The pipe should be slightly angled. The length is approximately 1700 mm. Under normal circumstances, pipes need to be insulated and wrapped with aluminum cortex. The drain pipe is generally connected with pvc20 pipes.
Selection of water-based paint dryer: According to the actual overall humidity load of the drying room, select the appropriate model, specifically according to its area, layer height, and evaporation of drying water, the initial humidity value and the target humidity value , There are also comprehensive factors such as indoor airtight effect, moisture source, fresh air supply and other key data to calculate the cooling capacity, dehumidification per unit time and other key data to correctly select the required model.
The water-based paint dryer can also be used for energy-saving transformation of paint rooms, as well as topcoat, primer, rubber, gravure, flexo, heat curing ink, plastic particle drying, resin raw material pre-drying, soy sauce residue, Welding electrode drying (acid carbon steel electrode, alkaline electrode, stainless steel electrode), rubber vulcanization room, electroplating sludge, leather sludge, chemical sludge, paint spray drying, polyurethane topcoat, epoxy intermediate paint, one-component Drying and heat preservation of top coat, etc.
