"Data on the adhesion strength of environmentally friendly water-based polyimide varnish" Adhesion between polyimide film and copper foil is possible using NMP completely free water-based polyimide varnish! Adhesion strength data and processing conditions are included!

Adhesion between polyimide film and copper foil is possible using NMP completely free water-based polyimide varnish! Adhesion strength data and processing conditions are included!

Our water-based polyimide varnish utilizes polyamic acid generated by regenerating unnecessary polyimide film during the processing of polyimide film through a unique chemical treatment, resulting in a "NMP completely free water-based polyimide varnish." This product can bond polyimide films and copper foils just like general-purpose polyimide varnishes. It is also applicable to uses that could not be processed due to the influence of "NMP" solvents. This document introduces adhesive strength and processing conditions. 【Representative Product】 NMP-free water-based polyimide varnish 【Features】 ■ Environmentally friendly water-based polyimide varnish ■ High heat resistance and chemical resistance ■ Can be stored at room temperature ■ Suitable viscosity for coating ■ Mixing proposals with other resins are possible ■ Improvement of working environment and global environmental improvement 【Applications】 ■ Wire coating varnish ■ Heat resistance enhancement for paints, conductive inks, and coatings ■ Sliding parts and materials requiring high-temperature resistance for automobiles/aircraft, etc. ■ Adhesives ■ Batteries ■ Heat-resistant paints ■ Prepreg products *For more details, please refer to the PDF document or feel free to contact us.

• Engineering Plastics

Completely NMP-free! A water-based polyimide varnish with excellent handling properties, high heat resistance, and chemical resistance, featuring low viscosity. Documentation is available, and free samples are being provided!

Polyimide varnish has characteristics of high heat resistance and chemical resistance, making it suitable for a wide range of fields and applications, including high-temperature sliding parts and related components for automobiles and aircraft, heat-resistant coatings, special adhesives, and wire insulation. It is a resin that will continue to be used by leveraging these features in the future. However, the current mainstream products are "NMP solution" or "a mixed solution of NMP and water." *NMP = N-methyl-2-pyrrolidone In recent years, "NMP" has raised concerns about its "toxicity," and it has been listed as a restricted substance under the "REACH regulations" in Europe, and it is expected to have an impact in Japan as well. NMP-free water-based polyimide varnish can contribute to "avoiding the use restrictions of NMP" and "reducing VOCs for environmental improvement." This product is expected to further enhance performance and reduce environmental impact in fields requiring high heat resistance and chemical resistance. It has excellent handling properties due to its stability at room temperature and low viscosity, comparable to general functional coatings. It is also believed to enable applications in processing methods that traditional polyimide varnishes could not be applied to. *For more details, please refer to the PDF document or feel free to contact us.

• Other polymer materials

Fukuda Co., Ltd. has been pursuing leak detection for 60 years and is committed to advancing the future of leak testing. 【 Supporting Various Leak Tests: Air Leak Test / Gas Leak Test (Hydrogen Gas, Helium Gas) 】 We develop, manufacture, and sell leak testing equipment to inspect airtightness and sealing properties. We will propose the appropriate testers and devices for each inspection target. 【 Target Industries and Examples of Inspection Targets 】 - Automotive Industry: Engines, FC components, valves and piping, various parts - Electronic Components Industry: Smartphones, keyless switches, various small sensors - Pharmaceuticals / Food / Cosmetics Industry: Bottle containers, syringes, vials, eye drop containers, pillow packaging, PTP packaging We will propose the most suitable leak testers for each industry. 【 ISO Certification 】JIS Q 9001:2015 (ISO 9001:2015)

Fukuda Corporation has been pursuing leak detection for 60 years and is dedicated to advancing the future of leak testing. 【 Supporting Various Leak Tests: Air Leak Test / Gas Leak Test (Hydrogen Gas, Helium Gas) 】 We develop, manufacture, and sell leak testing equipment to inspect airtightness and sealing performance. We will propose suitable testers and devices for each inspection target. 【 Target Industries and Examples of Inspection Targets 】 - Automotive Industry: Engines, FC components, valves and piping, various parts - Electronic Components Industry: Smartphones, keyless switches, various small sensors - Pharmaceuticals / Food / Cosmetics Industry: Bottle containers, syringes, vials, eye drop containers, pillow packaging, PTP packaging We will propose the most suitable leak testers for each industry. 【 ISO Certification 】JIS Q 9001:2015 (ISO 9001:2015)

This is a collection of links to Fukuda's technical columns. It covers various topics related to leak tests and more... Please check the related links for more information.

We will be exhibiting at the Green Cross Exhibition 2026. This year, it will be held at the Sapporo City Sports Exchange Facility, Tsudome (Sapporo City, Hokkaido). You can actually try out various cutters, including safety cutters. If you have any concerns about preventing cutting accidents, our cutter professionals will provide suggestions. We look forward to your visit.

We have started accepting inquiries for demonstrations and on-site evaluations of the non-contact, camera-less monitoring sensor "MotionCatch" for factory and worksite break rooms, overnight rooms, and solo workspaces. **Features of MotionCatch:** - Detects human movement non-contact using millimeter-wave radar and AI. - No cameras used and zero video recording. Provides privacy-conscious monitoring. - Palm-sized. Simply install on walls or ceilings without the need for wiring (USB powered, Wi-Fi). - The detection range of one unit is approximately 6m x 4m. It is suitable for monitoring "room units" rather than entire floors. We envision installation in rooms where placing cameras is difficult, such as break rooms, rest areas, overnight rooms, and solo workspaces. We are accepting inquiries for demo units, on-site evaluations, and confirmation of installation conditions. *Note: No video is recorded. This product is designed to assist monitoring and is not a medical device.*