川口化成品 List of Products and Services

Our company operates an online marketplace for powder coatings where companies looking to buy and sell powder coatings can gather. You can search for a wide variety of powder coating colors in stock on the web, with sales starting from one case. We offer a range of products, including "polyester powder coatings." Please take this opportunity to make use of our services. 【Products We Handle (Partial)】 ■ Polyester Powder Coatings - 5Y7/1 Glossy 15kg R-5 - 5Y7/1 25-70B Semi-gloss 15kg R-9 - 2.5Y9/1 22-90B Semi-gloss 15kg R-10 *For more details, please refer to the related links or feel free to contact us.

• paint

< Common Issues with Powder Coating > - Concerns about uneven surfaces and imperfections in the coating - Paint defects and spatters - Inconsistent patterns in patterned powder - Issues such as wrinkles around screw holes due to thick coatings - Accumulation of powder sludge in the painting booth ⇒ Do you have any of these concerns? In fact, the problem may be caused by coarse particles and uneven film thickness of the powder coating that occur during transport and storage! At Kawaguchi Chemical Products Co., Ltd., we offer the 'IPD Micronization Powder Coating Control System' that achieves micronization and precise supply of powder coatings. It can be easily installed on existing painting machines, making it convenient for consideration of implementation. ★ In response to the recent surge in paint prices, we can approach the reduction of painting defects and discharge volume, thereby contributing to a reduction in paint usage and overall cost savings. (Case studies are available in the PDF materials) 【Benefits of Implementation】 ■ Reduction in painting defects and improved coating efficiency ⇒ Cost reduction ■ Improved painting quality and yield ⇒ Increased customer satisfaction ■ Enhanced film thickness control and paint savings ⇒ Reduced environmental impact *For more details, please refer to the PDF materials or feel free to contact us.

• Power distribution and control panels

When performing powder coating, you may be concerned about the round texture of the coating or issues such as wrinkles around screw holes due to the thick film. This may be a problem caused by the instability of the powder's particle size or discharge itself. The IPD Micronized Powder Coating Control System 'IPD-KKEX' is a powder coating control system that uses an injector equipped with a micronization device to break down coarse particles of powder paint, returning it to the ideal particle size distribution immediately after production by the paint manufacturer. We encourage you to consider the introduction of our product. It will resolve various troubles encountered during powder coating. 【Features】 ■ Micronization of powder paint ■ Precise supply of powder paint ■ Can be retrofitted to painting equipment from any manufacturer *For more details, please refer to the PDF document or feel free to contact us.

• Power distribution and control panels

We will introduce troubleshooting for "troubles with hoses and pumps." If the issue is caused by the usual accumulation due to lack of regular maintenance, it can be addressed by cleaning or replacing parts and establishing standard procedures for maintenance. In addition, there are also measures for issues such as insufficient powder supply to the spray gun, gasping, and poor spray patterns. [Causes and Measures (Excerpt)] <Clogging due to impact melting> ■ Air pressure is too high → Lower the air pressure settings for the spray gun and transfer pump ■ Humidity in compressed air → Ensure that the supplied compressed air is clean and dry *For more details, please refer to the PDF materials or feel free to contact us.

• paint

This is a phenomenon where peeling occurs due to the coating film not being fully adhered to the substrate. We will introduce troubleshooting for "poor adhesion of the coating film." If insufficient curing of the coating film is the cause, measures can be taken by inspecting the curing oven and checking whether drying is being performed for the recommended time at a specific temperature. Additionally, there are measures for issues caused by excessive coating thickness during painting. 【Causes and Measures】 ■ Due to insufficient curing of the coating film → Inspect the curing oven and check whether drying is being performed for the recommended time at a specific temperature. ■ Due to issues in the pretreatment process → Properly perform pretreatment. ■ Due to excessive coating thickness during painting → Reconsider the painting method (painting time, discharge amount, working method, etc.). *For more details, please refer to the PDF document or feel free to contact us.

• paint

The powder coating film does not meet its original performance in terms of pencil hardness and chemical resistance. We will introduce troubleshooting for "decreased coating performance." If the cause is that the temperature during the curing process is too high or too low, it is possible to address this by adhering to the curing time and temperature recommended by the paint manufacturer. Additionally, there are measures to address the issue of not using the appropriate powder coating for the intended application. [Causes and Measures (Excerpt)] ■ Due to the temperature being too high or too low during the curing process → Adhere to the curing time and temperature recommended by the paint manufacturer ■ Due to issues in the pretreatment process → Conduct pretreatment properly *For more details, please refer to the PDF document or feel free to contact us.

• paint

We will introduce troubleshooting for "unstable film thickness (pattern)" such as when the substrate is visible, leveling is poor, or the surface is rough. If the complexity of the shape of the object being coated affects the entry of powder, it is possible to take measures by making suitable equipment settings according to the shape or by changing the nozzle at the gun tip. Additionally, there are measures for issues caused by the movement of the object being coated. 【Causes and Measures (Excerpt)】 ■ In cases where recycled powder is used and the supply of recycled and new powder is unstable: → If an automatic supply device is in place, check whether the supply of new powder relative to the recycled powder is consistent. ■ Due to the movement of the object being coated: → Adjust or secure the way the hanger is suspended. *For more details, please refer to the PDF document or feel free to contact us.

• paint

We will introduce troubleshooting for the phenomenon of "poor adhesion," which is characterized by low coating efficiency on the workpiece or a gradual decline in efficiency. If the cause is related to voltage or grounding issues, measures can be taken by checking the applied voltage, ensuring proper grounding of the workpiece, and removing accumulated insulating materials from the conveyor and hanger. Additionally, when using a recovery system, one reason for the issue may be that the particle size of the powder gradually decreases with each recovery, and there are countermeasures for this as well. [Causes and Countermeasures (Excerpt)] ■ Due to the shape of the workpiece → Reconsider the painting method for workpieces with complex shapes. ■ Due to issues with the paint itself → Consult with the manufacturer to consider improvements in the workability and charge characteristics of the paint. *For more details, please refer to the PDF document or feel free to contact us.

• paint

Powder coatings adhere due to the force of static electricity, which can lead to a phenomenon known as the "framing effect," where excessive coating occurs at the edges of the workpiece, resulting in poor leveling near the edges. We will introduce troubleshooting for this issue. If the cause is that the distance between the workpiece and the gun is too close, it can be addressed by adjusting the distance between the workpiece and the gun tip. Additionally, there are measures for cases where the particle size of the powder coating is too large. [Causes and Measures (Excerpt)] ■ The voltage of the electrostatic controller is too high → Set to a voltage suitable for the workpiece ■ The particle size of the powder coating is too large → Use a sieve or similar equipment to achieve an appropriate particle size distribution ■ The distance between the workpiece and the gun is too close → Adjust the distance between the workpiece and the gun tip *For more details, please refer to the PDF document or feel free to contact us.

• paint

The phenomenon of the gloss of the coating differing in certain areas or overall is referred to as "cloudiness (loss of gloss) of the coating." Here, we introduce troubleshooting for this issue. If the cause is due to deficiencies in the curing conditions (such as overbaking or gas checking), it is possible to take measures by reconsidering the curing conditions or purifying the atmosphere gas in the curing oven. Additionally, there are measures for issues caused by uneven charging of the coated object. [Causes and Measures (Excerpt)] ■ Due to deficiencies in curing conditions (such as overbaking or gas checking) → Reconsider the curing conditions → Purify the atmosphere gas in the curing oven ■ Because the difference in film thickness is extremely large (especially for matte powder coatings) → Ensure the film thickness recommended by the manufacturer *For more details, please refer to the PDF document or feel free to contact us.

• paint

We will introduce troubleshooting for the issue of "color variation in metallic paints," where the metallic feel changes in color patterns and brightness compared to color samples or previously painted items, even though the settings of the painting machine have not been changed. If the cause is that the paint is being supplied directly from the box of powder coating, it can be addressed by using a tank with a fluidizing device. Additionally, there are measures for issues caused by uneven grounding of the items being painted. [Causes and Measures (Excerpt)] ■ Directly supplying paint from the box of powder coating → Use a tank with a fluidizing device ■ There is a malfunction in the charging device of the spray gun → Consult the paint machine manufacturer ■ Uneven grounding of the items being painted → Check the grounding *For more details, please refer to the PDF document or feel free to contact us.

• paint

We will introduce troubleshooting for the phenomenon of "color differences, discoloration, and stains," which occurs when colors and patterns differ from the basic color samples or previous painted items. If the issue is caused by the adverse effects on the paint film due to the seepage of rust-proof oil that has entered the welded joint, it can be addressed by wiping off the rust-proof oil that has seeped from the heated joint during water drainage drying with thinner or similar substances. Additionally, there are measures for discoloration caused by gas during incomplete combustion in the baking drying oven. [Causes and Measures (Excerpt)] ■ Due to the adverse effects on the paint film from the seepage of rust-proof oil that has entered the welded joint → Wipe off the rust-proof oil that has seeped from the heated joint during water drainage drying with thinner or similar substances. ■ Discoloration occurred due to overbaking (burning too much) → Follow the recommended baking conditions for each type of powder coating. *For more details, please refer to the PDF document or feel free to contact us.

• paint

We will introduce troubleshooting for the issue of poor leveling of the coating film (the surface of the coating film feels like it has waves of varying sizes), known as "yuzu skin." If the cause is that the rise in baking temperature of the object being coated is too slow, it is possible to take measures by measuring the heating conditions of the baking furnace and determining the appropriate temperature settings. Additionally, there are measures for cases where the paint has fallen due to physical factors such as wind before entering the baking and drying furnace. [Causes and Measures (Excerpt)] ■ The rise in baking temperature of the object being coated is too slow. → Measure the heating conditions (heating curve) of the baking furnace and determine the appropriate temperature settings. ■ The temperature of the object being coated before painting is too high, resulting in excessive film thickness. → Extend the cooling time between the water drainage drying furnace and the painting booth. ■ Insufficient film thickness during painting or excessive film thickness. → Reconsider the painting method (painting time, discharge amount, working method, etc.). *For more details, please refer to the PDF document or feel free to contact us.

• paint

We will introduce troubleshooting for the phenomenon of "sheerness" (suke), where the base material is visible due to insufficient film thickness, contrary to sagging. If the cause is the insufficient hiding power of the paint itself, it is possible to address this by improving the paint (enhancing hiding power). Additionally, in the case of reciprocating painting, there may be issues caused by settings that are not suitable for the shape of the object being painted and the line speed. [Causes and Countermeasures] ■ Film thickness is too thin (insufficient hiding) → Reconsider the painting method (painting time, discharge amount, work method, etc.) ■ Insufficient hiding power of the paint itself → Improve the paint (enhance hiding power) ■ In the case of reciprocating painting, settings are not suitable for the shape of the object being painted and the line speed → Adjust the conveyor speed to match the reciprocating speed *For more details, please refer to the PDF materials or feel free to contact us.

• paint

We will introduce troubleshooting for the phenomenon of "dripping," where powder coating adheres too much to the coated object and starts to drip. If the cause is excessive coating thickness during painting, it is possible to take measures by reconsidering the painting method (painting time, discharge amount, working method, etc.). Additionally, there are measures for cases where the temperature of the object to be coated is too high, resulting in excessive film thickness. [Causes and Measures (Excerpt)] ■ Due to excessive coating thickness during painting → Reconsider the painting method (painting time, discharge amount, working method, etc.) ■ Due to the temperature of the object to be coated being too high, resulting in excessive film thickness → Extend the cooling time between the water-cut drying oven and the painting booth → It is desirable for the object to be coated to be below 40°C *For more details, please refer to the PDF document or feel free to contact us.

• paint

We will introduce troubleshooting for the phenomenon known as "butsu," which is characterized by small protrusions that appear on the coating film. If the cause is a blockage in the circulation path (such as the paint hose), it is possible to take measures by preventing the accumulation of powder, heat, humidity, and excess pressure in the paint hose from the recovery tank to the powder coating gun. Additionally, there are measures for cases where aggregated paint forms clumps that fly onto the workpiece and are baked on as is. [Causes and Measures (Excerpt)] ■ Blockage occurred in the circulation path (such as the paint hose) → Prevent the accumulation of powder, heat, humidity, and excess pressure in the paint hose from the recovery tank to the powder coating gun. ■ Aggregated paint formed clumps that flew onto the workpiece and were baked on as is → Remove the powder coating from the box, loosen it while still in the inner bag, and then set it in the painting machine. → Use the "IPD Micronization Powder Coating Control System." *For more details, please refer to the PDF materials or feel free to contact us.

• paint

We will introduce troubleshooting for the phenomenon known as "blistering," which occurs when water that has penetrated the coating evaporates due to the heat of the curing oven, expands into steam, and lifts the coating into bubbles. If the cause is that the moisture on the substrate has not been completely removed, it is possible to take measures by checking the water removal drying oven and the way the substrate is hung. Additionally, there are measures for cases where rust prevention oil or grease has not been thoroughly removed before painting. [Causes and Measures (Excerpt)] ■ Moisture on the substrate has not been completely removed → Check the water removal drying oven and the way the substrate is hung ■ Rust prevention oil or grease has not been thoroughly removed before painting → Apply appropriate pretreatment *For more details, please refer to the PDF document or feel free to contact us.

• paint

We will introduce troubleshooting for the phenomenon of "hajiki," where areas on the coating appear to have a thinner film thickness or where patterns in patterned powder coatings become flattened. If dirt caused by conveyor chain oil or lubricants is the issue, it can be addressed by thoroughly cleaning the equipment. Additionally, there are measures for issues caused by the adhesion of rust-preventive oils or silicone-based oils that cannot be completely removed during the degreasing process. 【Causes and Measures】 ■ Due to dirt from conveyor chain oil or lubricants → Thoroughly clean the equipment ■ Due to the adhesion of rust-preventive oils or silicone-based oils that cannot be completely removed during the degreasing process → Reconsider the method of the pretreatment (degreasing) process ■ Due to the mixing of different types of powder coatings → Review the painting environment and cleaning procedures when using different types of powder coatings *For more details, please refer to the PDF document or feel free to contact us.

• paint

This is a phenomenon where tiny holes appear on the surface of the paint film, resembling being poked with a needle, known as "pinholes (foaming)." We will introduce troubleshooting for this issue. If the cause is foaming from porous substrates, such as castings, zinc-plated materials, or aluminum die casts that have pinholes, it is possible to take measures by pre-baking the substrate or applying a solvent or powder primer before painting. Additionally, there are countermeasures for issues caused by the adhesion of foreign substances such as rust and dirt, or the residual oil on the substrate surface due to inadequate degreasing. [Causes and Countermeasures (Excerpt)] ■ Due to the adhesion of foreign substances such as rust and dirt → Thoroughly remove foreign substances ■ Due to air being trapped in the paint film → Check the temperature rise curve and slow down the temperature increase as much as possible ■ Due to residual oil on the substrate surface from inadequate degreasing → Strictly manage the concentration, temperature, spray pressure, and processing time of the degreasing agent *For more details, please refer to the PDF document or feel free to contact us.

• paint

The "IPD Micronized Powder Coating Control System" crushes coarse particles of powder coating, enabling micronized powder coating after precise supply. Coarse particles are crushed by a micronization device located in the injector section, and the powder flow passing through is read by a sensor, allowing for precise supply by adjusting the discharge amount with a controller. By reproducing the ideal particle size distribution during manufacturing, various benefits arise. For more details, please watch the publicly available video on YouTube linked below. 【Features】 ■ Crushes coarse particles with a micronization device in the injector section ■ Reads the passing powder flow with a sensor ■ Enables precise supply by adjusting the discharge amount with a controller ■ Reproduces the ideal particle size distribution during manufacturing ■ Can be installed on any existing manufacturer's coating machine (handgun, automatic machine) *For more details, please refer to the PDF document or feel free to contact us.

• Other fixtures and fittings

We handle a variety of products, including powder coatings, liquid coatings, solvents, thinners, and chemical products. We have secured a rich variety and quantity of stock in two warehouses located in Nagoya City. We deliver the specified amount to your designated location quickly and reasonably using our own transportation, whenever you need it. 【Products We Handle】 ■ Various Powder Coatings ・ Metallic Powder Coatings ・ Patterned Powder Coatings ■ Various Liquid Coatings ■ Solvents ■ Recycled Thinners ■ Adhesives ■ Surface Treatment Agents Before Coating ■ Booth Water Treatment Agents, etc. *For more details, please feel free to contact us.

• paint