Who We Are
KYOWA provides customized technical solutions and supports and assists you with your application
Kyowa has been enjoying the largest market sales share in Japan for many years. We are growing together with our customers through interactive dialogues to solve various problems in surface and interface chemistry, expedited repair service, and offering our high-quality measurement software and hardware products for all kinds of measurement challenges in surface and interface chemistry.
Measurements of contact angles, surface tensions, peel adhesions, friction forces, fogging properties, and oil amounts in metal sheet production in R&D and quality control have great influences not only on the quality of the products but also on intellectual properties rights, such as patents and trademarks.
We contribute to industrial and academic development by providing high-performance scientific instruments, which allow customers to publish their measurement results with confidence.
For more than 70 years Kyowa has been facing various surface and interfacial phenomena in literally every industry sector. We have been challenging established academic theories and practical techniques to resolve specific problems and expand the range of applications.
In new product development, we benefit from the wisdom inherited and accumulated over the years through extensive customer dialogues, academic advice from professoriate and our constantly improving measurement skills.
Solutions from Kyowa Interface Science
We assist our customers from the perspective of interface science with both qualitative and quantitative analysis of various characteristic properties required in coating processes.
Interfacial phenomena such as wettability, adhesion, surface tension, dispersion, and emulsion tend to be overlooked in our daily life. But they do play a major role in various fields of companies to create added value to products that can improve the customer’s experience and make their lives better and easier.
Soon after the establishment in 1947, we started to manufacture two kinds of measuring instruments: The Contact Angle Meter for the evaluation of wettability, and the Tensiometer to determine the surface tension, which is a critical factor affecting the wettability. In the more than 60 years since the sale of the first Tensiometer, we have been constantly creating new products and evolving unique measuring techniques for practical use with our products.
In rapidly evolving industries, such as semiconductors, nanotechnology, and flat panel display, the evaluation of surface tension and wettability is an important key to the quality improvement of highly functional materials.
The wet coating process is a widely used technique in the mass production of functional raw materials and throughout the whole coating process flow, troubles may occur at interfaces between different materials. By identifying and properly controlling these individual interface surfaces, the optimization of the product quality becomes possible.
We support our customer’s indispensable Analysis and Optimization of Interfacial Phenomena in Wet-Coating Processes
In most cases, functional materials are present in form of powders, such as nanoparticles and fillers, before being used as intermediate products and subsequently incorporated in the final product. The powders are blended into liquids to create consistent, homogenous fine particle dispersions which will be applied to substrates by any of the known methods to obtain coating films with the desired properties.
To achieve optimum coating conditions and high-quality coating films, it is necessary to control surfaces and interfaces throughout the whole process in correspondence with the required characteristics of each application. And also receive accurate feedback on the quality evaluation of the finished coating film.
We support and assist our customers from the perspective of surface science and continuously work on new ways to improve coating processes and contribute to the development of science and industry.
Different steps involved in coating processes
Mixing and pre-treatment of ingredients
Development and production of coatings: Blending of powders, resins, solvents, etc.
- Wettability of powders with by resins, solvents, water
- Dispersibility and stability of colloidal solutions
- Solubility of resins and additives
- Surface tension of the coating liquid
Surface treatment of the substrates
- Improvement of wettability of the substrates by treatments such as corona, flame, plasma, and UV
Supply and application of coating liquids
Observation and evaluation of the coating liquids’ dynamic behavior
- Dynamic wettability of substrates by coating liquids
- Dynamic surface tension of coating liquids
- Foamability and foam stability of coating liquids
Assessment of coating films
Evaluation of the properties of coating films
- Adhesive properties & surface free energy
- Peel & adhesion properties
- Antifouling properties, hydrophobicity, hydrophilicity
- Frictional wear resistance