吉田工業 List of Products and Services

A clean room manages airborne dust particles below a specified cleanliness level. Therefore, it features a space where temperature, humidity, and other factors are controlled to certain standards as needed, and several essential elements are listed as indispensable for the facility's structure. Our company also carries out installations such as cleanroom wall coverings, tailored to meet the individual needs of each customer while utilizing existing rooms. [Content Included] ■ What is necessary for a clean room? ■ What is the basic structure of a clean room? ■ What are the classes in a clean room? *Detailed information can be viewed through related links. *For more information, please refer to the PDF materials or feel free to contact us.

• Ventilation and Exhaust
• Contract manufacturing

Clean rooms are classified into two categories based on their intended use: Industrial Clean Rooms (ICR) and Biological Clean Rooms (BCR), and they are widely utilized in their respective fields. They use high-performance air filters, and the methods and concepts for purifying indoor air are similar. Let's take a look at the characteristics of each clean room. Please take a moment to read. 【Contents】 ■ What are the purposes of clean rooms? ・Industrial Clean Rooms ・Biological Clean Rooms ■ What are the benefits of clean rooms? *For detailed information, please refer to the related links. *For more information, please check the PDF materials or feel free to contact us.

• Ventilation and Exhaust
• Contract manufacturing

A clean room refers to a space where airborne microscopic particles and microorganisms are managed to be below a specified cleanliness level. It is designed to remove materials, chemicals, water, and other impurities, as well as to prevent the introduction of waste. Microparticles cannot be completely removed by standard air conditioning air filters. Therefore, during the design phase of a clean room, various measures are taken to prevent the intrusion of microparticles and bacteria from the outside and to avoid their generation within the clean room. Our company proposes the design and construction of clean rooms with specified cleanliness levels tailored to the purpose and application. [Contents] ■ What is a clean room? ■ How does a clean room work? ■ Tips for keeping the clean room budget in check? *For detailed information, please refer to the related links. *For more information, please refer to the PDF materials or feel free to contact us.

• Ventilation and Exhaust
• Contract manufacturing

When actually setting up a painting booth, there are several key points to keep in mind. Understanding these points is important to ensure you have a suitable painting booth. Here, we will share useful points for installation. Please use this as a reference when setting up. [Contents] ■ What criteria should be used to choose a painting booth? ■ What type of heating can be used in a painting booth? ■ What filtration method should be adopted for the painting booth? *Detailed information can be viewed through the related links. *For more details, please refer to the PDF materials or feel free to contact us.

• Ventilation and Exhaust
• Contract manufacturing

The painting booth plays a role in preventing paint splatter around the objects being painted. However, if the painting booth is used regularly, it will become dirty, so regular maintenance is required. Here, we will discuss the necessity of maintenance for painting booths. Please take a moment to read it. [Contents] ■ Reasons why maintenance of the painting booth is necessary: - To maintain consistent paint quality - To prevent exhaust issues - To minimize paint release and external discharge - To maintain the functionality of the exhaust fan - To preserve the performance of removing paint residue from the interior of the exhaust tower and the eliminator - To ensure the exhaust function of the ducts and prevent fires *Detailed information can be viewed through the related links. *For more information, please refer to the PDF document or feel free to contact us.

• Ventilation and Exhaust
• Contract manufacturing

In the painting booth of the worksite, the installation of exhaust and ventilation systems becomes very important. Many people at the worksite struggle with handling exhaust and ventilation. Here, we will discuss the necessity of installing appropriate exhaust and ventilation systems. Please take a moment to read it. [Contents] ■ What is a local exhaust system? ■ What are the benefits of a push-pull ventilation system? ■ What is the significance of conducting self-inspections for airflow measurement? *Detailed information can be viewed through the related links. *For more information, please refer to the PDF materials or feel free to contact us.

• Ventilation and Exhaust
• Contract manufacturing

In many factories, measures against oil mist in the workplace are now being given significant importance. This is due to various factors, including the adverse effects on human health and environmental issues in the workplace. Here, we will discuss the reasons why a spray booth is necessary for oil mist control in the workplace. We encourage you to read on. [Contents] ■ Why are oil mist measures being emphasized? ■ What are the oil mist issues in metal processing? ■ What are the recent methods and trends in oil mist control? *For detailed information, please refer to the related links. *For more information, please consult the PDF document or feel free to contact us.

• Ventilation and Exhaust
• Contract manufacturing

Dust is inevitably generated during work in factories. If dust is not properly managed, it can lead to various secondary disasters, so implementing countermeasures is essential for smooth business operations. Here, we will discuss the necessity of dust control measures. Please take a moment to read. [Contents] ■ Spray booths are effective for dust control! ■ What are the main concerns regarding dust issues? ■ What are common problems with dust collectors? ■ Why are our dust collectors well-regarded? *Detailed information can be viewed through the related links. *For more information, please refer to the PDF materials or feel free to contact us.

• Ventilation and Exhaust
• Contract manufacturing

In factories and similar places, there is a high demand for large painting booths. In large painting booths, push-pull ventilation systems are mainly used and are highly valued in the workflow. Here, we will introduce recommended push-pull ventilation systems for large painting booths. Please take a moment to read. [Contents] ■ What are push-pull ventilation systems useful for large painting booths? ■ Case studies of push-pull ventilation system implementation in large painting booths! *Detailed information can be viewed through the related links. *For more details, please refer to the PDF materials or feel free to contact us.

• Ventilation and Exhaust
• Contract manufacturing

At Company S, a manufacturer of foundational products, a local exhaust system had been installed for the discharge of organic solvents. However, this setup only expelled air outside, resulting in a constant negative pressure indoors. As a result, when doors were opened, outside air would enter, bringing in outdoor debris, which led to contamination of products and the production of defective items. To address this, a total heat exchanger was installed, which exchanged 70% to 80% of the heat from the exhaust air to the intake air, eliminating the decrease in heating and cooling efficiency. Additionally, airflow control dampers were installed in the supply and exhaust ducts to prevent the indoor environment from becoming negatively pressurized. 【Case Summary】 ■ Issues - The indoor environment was constantly under negative pressure. - Debris was adhering to products, resulting in defective items. ■ Results - The indoor environment became positively pressurized, eliminating defective products. - The temperature difference between the intake and exhaust air was nearly eliminated, improving heating and cooling efficiency. *For more details, please refer to the PDF document or feel free to contact us.

• Ventilation and Exhaust
• Contract manufacturing

At Company Y, a manufacturer of engine parts, there was a significant issue with mist floating in the air due to the lack of dust collection equipment, resulting in a very poor working environment. Workers would open doors, allowing the mist to drift into the neighborhood. To address this, two mist collectors were installed for six machine tools, and ducts were laid out. Flexible aluminum connections were used for the end connections to each machine to provide flexibility. After installation, the mist dispersion ceased, leading to an improved working environment within the company. With the ability to work with doors closed, the entry of outside debris decreased significantly. [Case Summary] ■ Issues - The odor of oil was severe, leading to complaints from nearby residents. - The lack of dust collection equipment resulted in a high concentration of mist in the air, creating a very poor working environment. ■ Results - Mist dispersion ceased. - Complaints from the neighborhood stopped. - The working environment improved, allowing for work to be done with doors closed. *For more details, please refer to the PDF document or feel free to contact us.

• Ventilation and Exhaust
• Contract manufacturing

At Company N, a large parts manufacturing company, there were multiple processing machines at the time, and the factory was constantly filled with invisible polishing powder, mist, and dust. As a result, during critical finishing processes (such as mirror finishing and glass material processing), these particles became the cause of fine scratches, leading to significant complaint costs. To address this, a simple cleanroom was installed. It was much more cost-effective compared to an actual cleanroom, and the installation took only 2 to 3 days, which did not affect the factory's operations. Consequently, the issue of finishing surface complaints was resolved, and we received very positive feedback from the site. [Case Summary] ■ Challenges - The factory was constantly filled with invisible polishing powder, mist, and dust. - These particles caused fine scratches during processing, resulting in significant complaint costs. - There were no funds for construction costs, and there was no downtime for the machines. ■ Results - The installation took only 2 to 3 days, so there was no impact on factory operations. - The issue of finishing surface complaints was resolved. *For more details, please refer to the PDF document or feel free to contact us.

• Ventilation and Exhaust
• Contract manufacturing

At food ingredient manufacturer Y Company, complaints were received from local residents living about 500 meters away from the factory due to noise from the engine generator. The factory operated the generator only during the winter and summer months to maintain a constant temperature inside the facility, supplementing the power for air conditioning, and the noise became an issue. To address this, soundproofing work was carried out by surrounding the generator with concrete panels to reduce low-frequency noise. As a result, noise measurement levels decreased, and complaints ceased. 【Case Summary】 ■ Issue - Complaints were received from local residents living about 500 meters away from the factory due to noise from the engine generator. ■ Result - Soundproofing work was carried out by surrounding the generator with concrete panels to reduce low-frequency noise. - Noise measurement levels decreased, and complaints ceased. *For more details, please refer to the PDF document or feel free to contact us.

• Ventilation and Exhaust
• Contract manufacturing

Incineration plants and crematoriums are equipped with incineration facilities. When these facilities are used for a long time, issues arise such as ash accumulation and deterioration of fan bearings, which lead to decreased combustion efficiency, reduced heat output, and incomplete combustion. Therefore, regular maintenance such as cleaning and parts replacement is necessary. Are you facing any issues like, "Cleaning the incineration facilities (ducts, dust collectors, etc.) is troublesome"? In such cases, if you contact Yoshida Industries, we will conduct a site inspection and meeting, and then perform cleaning of the incineration facilities and replacement of fan parts. [For such concerns] ■ Cleaning the incineration facilities (ducts, dust collectors, etc.) is troublesome ■ The person in charge at the facility is cleaning the incineration facilities, but there is resistance to having them work on weekends ■ Repairing the fans at the crematorium can be cumbersome if parts are stuck or deformed due to incineration heat *For more details, please refer to the PDF document or feel free to contact us.

• Ventilation and Exhaust
• Contract manufacturing

At Company T, which specializes in welding processing with robots, there was a significant issue with welding smoke (dust) in the factory. During winter, the windows are closed, causing the smoke to fill the factory. Since the capacity of the dust collector was already determined, we designed the hood to maximize its effectiveness. We increased the diameter of the intake (duct) to reduce internal resistance and hung curtains around the hood to improve efficiency. As a result, the smoke in the factory was significantly improved compared to before the installation. 【Case Summary】 ■Challenges - The factory has severe welding smoke (dust) due to constant welding. - In winter, the windows are closed, causing smoke to fill the factory. ■Results - The smoke in the factory was significantly improved compared to before the installation. *For more details, please refer to the PDF document or feel free to contact us.

• Ventilation and Exhaust
• Contract manufacturing

At Company K, a lost-wax manufacturer, there was a challenge with the generation of oil smoke and dust during the wax mold manufacturing process. Previously, exhaust was handled by ventilation fans, but this resulted in the exhaust being released directly outside, causing external surfaces to become rusted and stained with oil smoke. To address this, we improved the environment by implementing dust collection and localized exhaust systems for each manufacturing process (both indoors and outdoors). The factory is no longer hazy with oil smoke, and by extending aluminum flexible ducts to the workers' stations, the amount of oil smoke inhaled by the workers has also decreased. 【Project Overview】 ■ Localized exhaust for oil smoke generated when bonding wax ■ Installation of dust collection equipment to separate sand and air using a cyclone for exhaust ■ Installation of dust collection equipment to filter oil smoke using a filter ■ Installation of dust collection equipment to separate iron powder and air using a cyclone for exhaust *For more details, please refer to the PDF document or feel free to contact us.

• Ventilation and Exhaust
• Contract manufacturing

We received several requests from Company S, a foundation manufacturing company, to check the poor suction of an existing line when they undertake other construction work. In such cases, the inspection of the existing line has hindered the progress of the necessary work. Therefore, we proposed a contract for regular inspections of the existing line approximately once a year. This allows us to maintain the dust collection system in a normal state, enabling it to perform effectively, and also helps prevent breakdowns, thus avoiding unnecessary repair costs. 【Construction Overview】 ■ Regular inspection and cleaning of dust collectors and ducts for welding fumes, mist, etc. ■ Checking the appropriate air velocity and airflow at the intake of local exhaust systems and the dust collector itself. ■ Inspections will be conducted approximately once a year, with us preparing the necessary documents to be submitted to the respective department representatives. *For more details, please refer to the PDF document or feel free to contact us.

• Ventilation and Exhaust
• Contract manufacturing

At Company N, a manufacturer of metal fittings, there were concerns such as, "We have a painting booth, but the exhaust isn't quite effective," and "Since we handle large items like multi-story parking lots, we can't enclose the painting space. Is there a way to exhaust efficiently?" In response, we devised a push-pull system that does not require enclosing the top or sides, allowing for efficient exhaust. We were able to secure sufficient airflow, effectively exhausting almost all paint debris and particles, and since there was no need to enclose the products, work efficiency was not compromised. 【Case Overview】 ■ Challenges - Due to the size of the products, large machinery like cranes was needed for their movement. - It was necessary to keep the top and sides open to secure a route for product movement. ■ Results - Sufficient airflow was secured, allowing for the effective exhaust of paint debris and particles. - Work efficiency was not compromised as there was no need to enclose the products. *For more details, please refer to the PDF document or feel free to contact us.

• Ventilation and Exhaust
• Contract manufacturing

At U Company, various equipment is manufactured with a focus on large crushers. The painting process did not have a paint booth, resulting in a poor factory environment due to the dispersion of paint residue and odors. Since the painting targets are large, collecting paint is difficult, and preparing the necessary equipment would incur enormous costs, a request was made to Yoshida Industries. In response, our company produced a bellows-style tent. Previously, there were issues not only with the working environment but also with paint powder adhering to other products. However, all these problems have been resolved, and we received very positive feedback from the on-site workers. [Case Overview] ■ Issues - The factory environment was poor due to the dispersion of paint residue and odors. - Guidance was received from the supervisory authority, making countermeasures urgent. ■ Results - All issues, including paint powder adhering to other products, were resolved. *For more details, please refer to the PDF document or feel free to contact us.

• Ventilation and Exhaust
• Contract manufacturing

At Company M, a manufacturer of rice milling machines, a new factory was established, and a painting and drying line was created. However, after installing a painting booth and conducting outdoor exhaust, paint residue began to scatter, leading to complaints from the neighbors. While there was an option to replace the painting booth with a higher-performance model, the costs were prohibitive. Instead, a secondary filter chamber was installed in the middle of the exhaust duct, with a filter that was compatible with the paint. As a result, paint residue no longer scattered outside, and the costs were reduced to about one-third compared to replacing the painting booth with a higher-performance one. [Challenges] - Outdoor exhaust causes paint residue to scatter - Filter collection capacity - Compatibility between paint and filter *For more details, please refer to the PDF document or feel free to contact us.*

• Ventilation and Exhaust
• Contract manufacturing

Yoshida Industries is a professional group specializing in air conditioning, including dust collection, local exhaust, and ventilation. This document introduces cases where Yoshida Industries has diagnosed users' air environments and, based on years of experience and achievements, designed and constructed original air purification systems suitable for the environment, solving environmental issues in factory facilities. 【Featured Cases (Excerpt)】 ■ Installation of dust collectors ■ Installation of local exhaust systems ■ Installation of painting booths ■ Installation of clean rooms ■ Installation of push-pull systems, etc. *For more details, please refer to the PDF document or feel free to contact us.

• air conditioning
• Dust collector
• Mechanical Design

Yoshida Kogyo Co., Ltd. provides custom-made clean rooms that match the shape of the site and equipment without compromising workability. Large grinding machines can also be converted into clean rooms in a pinpoint manner. We offer a wide range of clean classes to meet customer requests and budgets. Additionally, the construction takes only 2 to 3 days, minimizing the impact on factory operations. 【Do you have any of these concerns?】 ■ Want to collect dust in specific spots to prevent machine failures caused by grease and dust ■ Want to create a clean room for only part of the area to avoid high costs associated with cleaning the entire room to prevent product defects When you hear "clean room," do you think it means the entire room? Our company has the technology to create clean rooms in specific areas through our unique technology and precise design. 【Construction Examples】 ■ Cleaned only the main parts of a plastic molding machine with a mobile clean booth → By targeting one machine and further converting part of it into a clean booth, we significantly reduced costs ■ Cleaned only the surroundings of two large NC machines, not the entire factory → By installing a tent-type clean room in part of the factory, we shortened the process and reduced costs *For more details, please download the materials or contact us.

• Dust collector
• Clean Booth
• Other clean room equipment and facilities

At Company M in the metal products manufacturing industry, fumes were lingering in the welding factory, creating a poor working environment. As a result of guidance from the labor standards inspection office, the installation of local exhaust systems became necessary. Welding operations were being conducted throughout the entire factory, and due to the scattered locations, the amount of ductwork required for local exhaust systems became very large. Therefore, it was proposed to ventilate the entire factory using a push-pull method. However, calculating the airflow was challenging, and there was a possibility of failure. In this construction project, fans were installed for both the push and pull systems. However, the airflow of the push-pull system could be disrupted by crosswinds entering during the opening and closing of shutters. This issue was resolved by creating partitions with vinyl curtains. [Case Study] <Results> ■ Ventilation within the factory was achieved, improving the working environment. ■ A notification of the installation of the equipment was submitted to the labor standards inspection office, and approval was obtained. *For more details, please refer to the PDF document or feel free to contact us.

• Clean Booth
• Exhibition planning/construction
• Machinery and equipment installation/dismantling/relocation

At Company T, which manufactures air conditioning equipment, painting of large special vehicles such as carrier cars is conducted within the factory, resulting in a constant presence of paint dust in the environment. Initially, employees wore masks while working, but following instructions from the supervisory office, the introduction of a painting booth became necessary. Therefore, we proposed a "sealed push-pull dust collection system" by renovating an existing room within the factory. After implementation, the factory environment was significantly improved compared to before the installation. Additionally, we were able to significantly reduce costs compared to the expenses of installing a large painting booth from a manufacturer, and we received very positive feedback. [Case Study] <Results> ■ The factory environment was significantly improved compared to before implementation. ■ The renovation of an existing room in the factory allowed for substantial cost savings. *For more details, please refer to the PDF document or feel free to contact us.

• Clean Booth
• Exhibition planning/construction
• Machinery and equipment installation/dismantling/relocation

At Company S, a cardboard manufacturing manufacturer, we received a consultation regarding the issue that during the winter, the steel framework inside the factory condenses due to the large amount of steam used by the machines (corrugating machines), causing water droplets to fall on the products and resulting in defective items. To address this, we decided to block the steam source with vinyl curtains and perform localized exhaust of the steam within that area. Specifically, we enclosed the surroundings and the top of the machine (corrugating machine) with a vinyl curtain that is 3 meters high and 85 meters long, and added three roof fans for exhaust. As a result, the costs were reduced to about one-third compared to simply adding roof fans. [Case Study] <Results> ■ Condensation was eliminated, preventing water droplets from falling on the products, which reduced the occurrence of defects. ■ We were able to significantly reduce construction costs. *For more details, please refer to the PDF document or feel free to contact us.

• Clean Booth
• Exhibition planning/construction
• Machinery and equipment installation/dismantling/relocation

At Yoshida Industries, we are committed to addressing our customers' "troubles" as a key objective. We work together with our customers to develop suitable solutions for various issues such as "there are no good machines for collecting special dust," "there is no space for exhaust equipment," and "I want to improve the working environment but have a limited budget." 【Case Studies】 ■ Large wet dust collection system ■ Mobile painting booth ■ Ceiling-opening painting booth ■ Large processing machine enclosure ■ Other support ・Agency for submission documents to the Labor Standards Inspection Office / Regular maintenance services for various equipment, etc. *For more details, please refer to the PDF materials or feel free to contact us.

• Contract manufacturing
• Dust collector

Company T, which manufactures air conditioning equipment, faced challenges in creating a suitable painting environment due to the necessity of using cranes for painting large machinery, making it impossible to enclose the painting area. As a result, the painting conditions were poor. The only solution available was a "push-pull ventilation" system, but it was prohibitively expensive, preventing any progress on countermeasures. In response, our company adopted an "open push-pull type" system. Given the limited space, we designed and manufactured it to maximize the available working area on-site. As a result, the airflow was clean, and we successfully passed the inspection by the labor standards office without any issues. Additionally, we were able to keep costs to about one-third of those from specialized manufacturers. *For more details, please refer to the PDF materials or feel free to contact us.*

• Ventilation and Exhaust
• Contract manufacturing

T University has various research facilities, and in the Faculty of Science and the Faculty of Agriculture, there are organic solvents and specific chemical substances, while in the Faculty of Engineering, numerous local exhaust systems are installed for cutting and grinding dust and mist. Due to instructions from the supervising office and the university's policy, it was decided to conduct regular self-inspections, but we were unsure how to proceed, which led to this request. Therefore, our company has not only established the inspection items mandated by law but also set unique inspection items for each facility, acting on behalf of the university's facility managers to conduct the self-inspections. By creating a template for self-inspection this time, it has provided a guideline for the customer to conduct inspections themselves in the future. *For more details, please refer to the PDF document or feel free to contact us.*

• Contract Inspection

At Company H, a machinery manufacturer, a large amount of exhaust gas was generated during the trial operation of the compressor engine, filling the factory with gas and soot. Additionally, due to the high exhaust temperature of 250°C, the manufacturer's flexible hood was insufficient in heat resistance and could not be used. In response, our company manufactured a high-heat-resistant exhaust fan and stainless steel exhaust duct. We designed it to be vertically sliding so that hoods could be installed on the exhaust outlets of various sizes of machinery. As a result, not only the surrounding area but also the interior of the factory was improved to a comfortable environment. Many aspects were improved internally, and costs were significantly reduced. *For more details, please refer to the PDF document or feel free to contact us.*

• Ventilation and Exhaust
• Contract manufacturing

At N Corporation's electronic components factory, a wide variety of outdoor units are installed, resulting in high noise levels throughout the facility. Improvements are essential due to the impact on neighboring factories and the working environment within the facility, and this has also been pointed out by the labor standards inspection office. However, the types and number of noise sources were vast, making it impossible to address them completely. Therefore, our company measured and diagnosed the noise generation points within the factory and provided advice on improvement methods that could be implemented internally as much as possible. As a result, the environment has been improved not only for the neighbors but also within the facility, creating a more comfortable atmosphere. Many aspects were improved internally, significantly reducing costs. *For more details, please refer to the PDF document or feel free to contact us.*

• Noise Inspection
• Other services

The painting factory of Company Y, a tool manufacturing company, was only using exhaust fans to ventilate the dust generated during painting, which was insufficient for proper exhaust. However, due to the varying sizes of the products and their locations being spread out, there was a problem where paint generated in distant areas could not be collected by a standard painting booth. Therefore, our company designed a painting booth tailored to the dimensions of the painting room. We implemented a push-pull ventilation system to ensure that paint is smoothly exhausted regardless of where it is generated. As a result, the working environment for the painters has significantly improved, and we received approval from the supervisory authority. Additionally, since the exhaust air is filtered and clean, we were able to resolve any issues with the neighboring areas. *For more details, please refer to the PDF document or feel free to contact us.*

• Ventilation and Exhaust

The large equipment manufacturing factory of Company N did not have a painting booth, resulting in paint residue and unpleasant odors dispersing during the painting process, leading to a very poor air environment within the factory. Furthermore, they were receiving guidance from the supervisory authority, and measures were urgently needed, but they faced cost issues as ready-made large painting booths would incur enormous expenses. Therefore, our company designed and constructed a custom-made, low-cost original bellows-type painting booth that eliminated waste to meet the necessary capabilities within a limited budget. As a result, the working environment improved, resolving the issue of paint powder adhering to other products, and we were able to obtain approval from the supervisory authority. *For more details, please refer to the PDF document or feel free to contact us.*

• Ventilation and Exhaust
• Contract manufacturing

At F Company's foundry, they were facing a problem where a large amount of gas generated from the burning of an epoxy resin mixed with sand mold agents filled the factory when molten metal was poured into the molds. In response, our company devised a localized exhaust hood tailored to the sources of smoke and gas generation. It was designed to transport the air via ducts, with exhaust fans efficiently expelling the contaminated air outside the factory. As a result, the smoke generated during pouring, the gas that came out of the molds afterward, and the odors that were a concern were smoothly discharged, significantly improving the working environment. *For more details, please refer to the PDF document or feel free to contact us.*

• Dust collector

Company S, a precision parts manufacturing manufacturer, had installed one large dust collector and 30 to 40 small dust collectors in a factory with many cutting and polishing processes. However, when products had oil on them, dust and oil would adhere to the inside of the ducts and hoods, and sparks from the polishing would ignite the dust collectors. Additionally, since cyclones can separate even light dust, light debris that catches fire would not reach the bag filter. Therefore, a pre-cyclone was delivered. After initially supplying one unit for testing, it was found to be excellent in dust collection performance, fire prevention effectiveness, and ease of debris collection, receiving very positive feedback. *For more details, please refer to the PDF materials or feel free to contact us.*

• Dust collector

Company M, a manufacturer of wooden products, has a factory that produces items such as rackets and faced the challenge of needing to collect wood shavings generated during the manufacturing process. Therefore, dust collection was implemented during the process of making wooden products. Although the material transitioned from wood to carbon, dust collection continued for carbon as well. Eventually, they began producing golf clubs and snowboards, which generated dust and organic solvents, creating a need for dust collection, leading to the installation of dust collection equipment. As a result, the effectiveness of dust collection for wood shavings and organic solvents generated from paint during the process was enhanced. *For more details, please refer to the PDF document or feel free to contact us.*

• Dust collector

The heavy industry manufacturer M faced the issue of large amounts of dust being released when loading wood chips, which serve as fuel for thermal power generation, from truck dumpers into the equipment. Therefore, we analyzed the mechanism of dust dispersion. As a result, the dust dispersion was significantly improved compared to before, and the collected dust automatically returns from the dust collector to the equipment, eliminating the need for waste collection work and reducing maintenance burden to zero. Since all processes from meetings, design, manufacturing, construction, to inspection were handled by our company, there were no unnecessary expenses, allowing us to stay within budget. *For more details, please refer to the PDF document or feel free to contact us.*

• Dust collector

Company S, which manufactures precision machined parts, produces sewing machine parts and precision machined components, with most of the manufacturing process involving manual polishing. Due to the highly adhesive dust, there was a problem with filters becoming clogged quickly. When highly adhesive dust adheres to the filter, it becomes difficult to remove it with pulses or other methods. Therefore, before collecting the adhesive dust, lime is introduced to create a thin film on the filter for dust collection. This allows for the easy removal of the adhered dust. As a result, the current frequency of lime application is twice a day, in the morning and afternoon, and this process has eliminated filter clogging. *For more details, please refer to the PDF document or feel free to contact us.

• Dust collector

At Company K, a large parts manufacturing business, there are processes in the production of products that involve grinding and buffing large parts. During these processes, the scattered grinding dust adheres to other equipment, causing wear on moving parts, impairing precision components, and leading to various issues including health hazards. Due to the large size of the processed parts and the expansive work area, it was difficult to propose improvements with local exhaust systems. However, resolving the issue of product precision was urgent. Therefore, a total heat exchanger was installed to exchange 70% to 80% of the heat from the exhaust air to the intake air, eliminating the decrease in heating and cooling. Additionally, airflow adjustment dampers were installed in the supply and exhaust ducts to prevent the indoor area from becoming negatively pressurized. As a result, dust in the work area, as well as dust scattering to surrounding equipment, was eliminated, successfully keeping the factory clean. *For more details, please refer to the PDF document or feel free to contact us.*

• Dust collector

The blade manufacturing company M has about 10 quenching and tempering furnaces, which caused the factory to be in a state where the other side could not be seen due to the oil smoke. Previously, a fan was used to create airflow from behind the workers to prevent them from inhaling the oil smoke. However, when the indoor space became filled with oil smoke, the fan only ended up blowing more oil smoke into the area, rendering it ineffective. Therefore, we implemented local exhaust for the oil smoke from the quenching and tempering furnaces. An electric dust collector was installed at the discharge port of the automatic quenching furnace. Additionally, hoods were installed near the oil tank and sawdust tank used for quenching and tempering. Ultimately, electric dust collectors were introduced for the seven furnaces that produced a significant amount of oil smoke. As a result, the working environment improved, and the workers inhaled less oil smoke. *For more details, please refer to the PDF document or feel free to contact us.*

• Ventilation and Exhaust

Company Y, which manufactures electronic components, found that no matter how many dust collectors recommended by major manufacturers were installed in their factory, the dust suction did not improve. They are constructing a new factory with the same processes, but they expressed concerns that if the new dust collectors were to perform poorly like the previous ones, it would be problematic, and they requested a solution. In response, we proposed and installed dust collectors suitable for the type of waste generated. We also suggested a waste discharge method tailored to the on-site working conditions and manufactured the dust collectors accordingly. As a result, there are no longer any issues with suction as there were before, and the cleanroom in the factory is being kept clean. Furthermore, waste discharge has become very easy, leading to significant improvements in both work time and running costs, and we have received positive feedback. *For more details, please refer to the PDF document or feel free to contact us.*

• Dust collector
• Clean Booth
• Ventilation and Exhaust

Company S, engaged in the processing industry, has a factory so white that work cannot be done without masks and glasses. There were 22 small dust collectors installed on the second floor, but their effectiveness was lacking. The waste collection process was also inconvenient and labor-intensive, and the dust collectors were insufficient in capacity. Additionally, complaints from nearby residents regarding noise and dust had been received, and when constructing a new factory, they expressed a desire to achieve a perfect factory hygiene environment. Therefore, we calculated the necessary dust collection capacity for all processing machines and selected and manufactured dust collectors that met the overall requirements of the factory. We designed the dust collector discharge section to allow for easy and clean waste disposal. With the enhanced dust collection power, the issue of dust scattering has been resolved. Waste disposal has significantly improved, leading to increased work efficiency. The noise from the dust collectors is below the standard level, so there have been no complaints from residents. *For more details, please refer to the PDF document or feel free to contact us.*

• Dust collector
• Deaeration device
• Clean Booth

At Company F, a foundry, epoxy resin is mixed with sand mold agents to make molding easier. However, when molten metal is poured into the molds, a large amount of gas generated from the burning resin filled the factory, causing concerns. In winter, the windows and shutters are closed, trapping odors and potentially affecting the health of the workers. To address this issue, a smoke and gas dust collection system was installed in part of the factory. The smoke generated during pouring and the gas that escapes from the molds afterward, which were seen as problematic, have been significantly improved, and we have received very positive feedback. *For more details, please refer to the PDF document or feel free to contact us.*

• Dust collector

Company T in the parts manufacturing industry was troubled by frequent clogging of the dust collector filters. Therefore, they installed the "Preduster" as a pre-dust collector. With the Preduster as a pre-dust collector, only fine dust reaches the bag filter, reducing filter clogging. Additionally, this method significantly reduces the risk of dust collector fires caused by sparks generated from metal grinding machines, as it minimizes the intrusion of sparks into the bag filter dust collector. *For more details, please refer to the PDF document or feel free to contact us.*

• Dust collector
• Clean Booth
• Ventilation and Exhaust

Company K, engaged in the metal cutting industry, has introduced a large number of cutting machines, resulting in insufficient dust collection. The air was constantly filled with oil mist, making it difficult to see across the room. Additionally, there were no suitable options in terms of budget or installation space. Therefore, we implemented a custom-made "mist collector" to consolidate the oil mist collection within the factory. The factory environment changed dramatically, and instead of expressions of gratitude, we received many surprised comments from the on-site employees. The company is currently using 14 of our mist collectors. Of course, each unit is custom-designed and constructed to meet specifications such as size, dust collection capacity, and duct pressure calculations, ensuring we provide what the customer needs most. Yoshida Industries is committed to addressing the concerns of those struggling with factory environments. Please feel free to consult with us. *For more details, please refer to the PDF document or contact us at your convenience.*

• Dust collector
• Oil Mist Collector
• Clean Booth

At Company B, a chemical product manufacturing company, the existing dust collector was aging, and there was a concern about wanting to reduce maintenance (such as the frequency of cleaning and replacing filter bags and the frequency of removing buckets). They introduced a "pulse bag filter dust collector" that allows for adjustable dust removal settings. Additionally, to make it easier to detach sticky dust, they installed a wet filter and modified the dust collector body to pull out the bucket from the front instead of the side, based on the installation conditions. As a result, most of the burrs are collected by the pre-dust collector, so only fine dust reaches the bucket of the pulse bag filter. Dust leakage has been eliminated, significantly reducing maintenance efforts. *For more details, please refer to the PDF document or feel free to contact us.*

• Dust collector
• Oil Mist Collector
• Clean Booth