We will be exhibiting at the Functional Film Expo 2022 held on July 27-28, 2022.

This is a surface treatment technology that dramatically improves the adhesion of fluororesin films and polyimide films, which have been considered difficult to bond until now.

At Kawamura Industries, we apply plasma treatment to films, metal foils, non-woven fabrics, and more, performing surface modifications such as hydrophilization and hydrophobization. This treatment significantly improves the adhesion of various films and allows for the removal and purification of organic substances from the substrate surface. It can effectively remove residues such as rolling oils that are difficult to completely eliminate with wet cleaning. Additionally, it is possible to bond various materials together without the use of adhesives. **Features of Kawamura Industries' 'Vacuum Plasma Treatment'** - Dramatically improves adhesive strength - Effectively removes rolling oils and organic substances, purifying the surface - Enables adhesive-free bonding of various materials - Selects suitable gas types and plasma treatment conditions for each project - Treatment effects last for an extended period - Continuous processing is possible with roll-to-roll technology *For more details, please refer to the PDF document or feel free to contact us.*

• Surface treatment contract service

[Presentation of 4 Technical Introduction Materials] We respond from prototyping to mass production! We also support material procurement. We accommodate electronic materials that require high functionality, such as those for 5G products.

At Kawamura Industries, we create and provide electronic materials with various functions by integrating processes such as slitting, plasma surface treatment, sputtering, and thermal lamination. We can handle everything from prototyping to mass production, including material procurement. We welcome inquiries for small lot requests as well. 【Our Technologies】 ■ Slitting With about 50 years of extensive experience, we can accommodate slit widths from 2mm to 2,000mm. We can process in clean rooms as well as in yellow rooms. ■ Plasma Surface Treatment Effective for improving the adhesion of low-adhesion films like fluorine films. Our roll-to-roll equipment allows for rapid mass production startup. ■ Thermal Lamination We have a vacuum thermal press capable of handling high temperatures up to 400°C within a clean room. Our laminating machines can also operate in a clean environment from the preparation stage. ■ Sputtering We possess roll-to-roll equipment. In collaboration with partner companies, we can also perform electrolytic copper plating on sputtered materials using roll-to-roll methods. *You can view technical documents and introductory materials regarding the above processing technologies from the <PDF Download>. Please feel free to contact us with any inquiries.

• Processing Contract
• Surface treatment contract service
• plastic

It is a heat-resistant laminated board that integrates polyimide film without adhesive.

Kawamura Industries' "Polyimide Laminate (PI-Plate)" is a laminate made by layering and thermally bonding polyimide film that has been activated on its surface through plasma treatment. **Features of Kawamura Industries' "Polyimide Laminate"** - Excellent heat resistance due to being adhesive-free → Continuous: 200°C / Short-term: 400°C - Exhibits excellent mechanical properties derived from polyimide film - Laminates can be produced in sizes up to 480mm x 1,100mm - Maximum thickness of 10mm (proven) *Please feel free to consult us regarding thicknesses over 10mm. *For examples of properties, please refer to the PDF document or feel free to contact us.

• Processing Contract
• Other polymer materials
• Other contract services

The "vacuum hot press," which can also perform surface treatment in the previous process, and the "coating" technology for metal foils are suitable for the processing of electronic materials such as substrates for 5G and base materials for planar heating elements!

At Kawamura Industries, we develop and manufacture materials for electronic applications and provide associated processing technologies. We will introduce technologies that have a proven track record for substrates used in 5G and for planar heating elements. 【Our Technology: Electronic Materials - Strengths of Vacuum Heat Press Coating Technology】 ■ Vacuum Heat Press In prototype and mass production using vacuum heat pressing, we can press without adhesives, allowing us to better utilize the inherent properties of the materials. (Note: We can also accommodate laminated products with adhesives.) - We have a large number of press machines, capable of handling various sizes and temperatures. - There are press machines installed in a cleanroom environment. ■ Resin Coating on Metal Foils Although we operate in a contract processing format, we can combine "metal foil + high-temperature treatment." - Our coating drying oven can handle temperatures up to 260°C, allowing for the drying of high-boiling point solvents. - We can also accommodate polyimide coatings with a high-temperature curing oven that can handle up to 400°C. Including material procurement, we provide consistent support from small lots and prototypes to mass production, so please feel free to contact us. *We are currently publishing an introductory document summarizing what Kawamura Industries can do! You can view it immediately via [PDF Download].

• Press Dies
• Other painting machines
• Surface treatment contract service

By simply dissolving the powder in a solvent and drying it, you can obtain a transparent and high-heat-resistant polyimide film!

Kawamura Industries' "KPI-MX300F" is a polyimide powder material that can dissolve in various solvents. The films obtained by dissolving in a solvent and then heating and drying have minimal coloring and high transparency, which is a significant feature. **Features of Kawamura Industries' "KPI-MX300F"** - Can dissolve in various solvents - Produces transparent, high-heat-resistant polyimide films - The resulting films have minimal coloring and high transparency *For property values, please refer to the PDF document or feel free to contact us.*

• Composite Materials
• Other polymer materials
• Organic Natural Materials

● This is a leak testing device for small electronic components that does not use fluorinated inert liquids (PFAS-free). ● There is no longer a need for unstable visual confirmation through liquid immersion testing. It adopts a quantitative testing method that allows for stable pressure leak testing. ● It is a tabletop leak testing device specifically for gross leaks, with accuracy equal to or greater than that of liquid immersion testing. ● The detectable range is approximately 1×10⁻² Pa·m³/s to 1×10⁻⁶ Pa·m³/s (varies depending on the target product). ● It is suitable for sealed structures ranging from a few millimeters to a maximum of 80 × 70 mm. Please feel free to contact us for more information!

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without causing any thermal impact on the base material. Repairs can be carried out in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without causing any thermal impact to the base material. Repairs can be carried out even in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without causing any thermal impact to the base material. Repairs can be carried out in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

● The production time for casting prototypes can be shortened! Since model production is not required, the time needed to create prototypes, which previously took about a month, can be significantly reduced. ● Model costs can be reduced! By directly producing sand molds from 3D data, there is no need for model production costs. If changes to the model are necessary, they can be addressed by modifying the 3D data. ● Similar products with different shapes and dimensions can be prototyped simultaneously! With one molding process, different products with similar shapes or varying dimensions can be molded at the same time. This allows for the verification of multiple types in a short period.