Quality Policy
High-Quality Testing Machines at Reasonable Prices
Dedicated to Rubber Testing Machines
Since Our Founding
ince its establishment in 1997 in Sumida, Tokyo, M&K Co., Ltd. has been exclusively engaged in the rubber testing machine business.
In addition to introducing excellent products from around the world, we also develop our own testing machines to provide high-quality equipment at reasonable prices.
Certified under ISO 9001:2015, we continuously strive to enhance quality and remain committed to contributing to the advancement of the rubber industry.
The Importance of Testing Machines
In recent years, the operating environments for rubber products have become increasingly severe, demanding higher and more advanced performance.
From the standpoint of quality assurance, it is essential to accurately evaluate in advance whether rubber products possess sufficient durability under actual usage conditions and environments.
This is not only a matter of manufacturing responsibility and safety for producers, but also equally important for users of the products.
Rubber deteriorates through complex mechanisms influenced by chemical and physical factors such as gases, liquids, heat, and light. Therefore, selecting rubber materials that meet the required performance under specific operating conditions—and evaluating them in environments that closely simulate actual usage—is of critical importance.
The fact that ISO and other major international standards specify detailed testing methods for rubber products demonstrates the wide variety of rubber properties that must be considered.
Due to the nature of rubber, some degree of variation inevitably occurs during processing. While it is nearly impossible to eliminate these variations completely, they can be minimized through proper testing.
For this reason, rubber testing machines are indispensable for ensuring product quality.
Whether during mixing—to confirm uniform distribution of compounding agents and fillers—or during vulcanization and final product testing to verify strength and physical properties, testing machines are essential tools for evaluating each stage of the manufacturing process and ensuring that every product meets its specifications.
Testing machines are indispensable for evaluating each stage of the manufacturing process—such as mixing, to confirm uniform dispersion of compounding agents and fillers; vulcanization, to ensure consistent curing; and final product testing, to verify that strength and physical properties meet specifications. These evaluations are essential to guarantee the overall quality of rubber products.
While physical tests such as hardness, specific gravity, and tensile strength are commonly performed for rubber products, instruments like Mooney viscometers, curing testers, and dispersion analyzers also play a crucial role in ensuring product quality by directly evaluating the mixing conditions.
Unlike production machinery, testing machines do not generate profit directly. For this reason, they are often given lower priority. However, in today’s world—where safety and reliability are of paramount importance—we firmly believe that true trust in product safety and quality is cultivated behind the scenes, supported by accurate and consistent testing.
In a broad sense, rubber can be considered a part of the plastics family. When it comes to elastomers, however, it is often difficult to determine which category they truly belong to.
At M&K, we believe there is no need to draw a strict line between rubber and plastics. Instead, we focus on introducing high-quality testing machines with a genuine commitment to performance and reliability.
About Our Products
In rubber manufacturing, the importance of the mixing process goes without saying—it has a direct impact on the performance and quality of the final product.
Therefore, testing instruments that evaluate and control the mixing conditions are essential.
At M&K, we believe that the quality of mixing determines the overall product quality.
To ensure accurate evaluation, we have independently developed and manufactured testing instruments such as curing testers, Mooney viscometers, and filler dispersion analyzers.
To reproduce and analyze the complex mechanisms of rubber mixing under conditions close to actual production,
we have jointly developed and manufactured a laboratory-scale mixer in technical collaboration with CT Co., Ltd. (Chareontut),
a Thai manufacturer specializing in small mixing machines.
In addition, we also design and produce a variety of laboratory-scale testing equipment,
including open roll mills, extruders, test presses, and pelletizers.
For physical property testing in the molding process after rubber mixing,
we offer rubber hardness testers as well as rebound resilience and abrasion testing machines.
These instruments are manufactured by Bareiss, one of Europe’s leading testing machine manufacturers.
In addition, we provide tensile and compression testing machines for rubber,
supplied by Cometech, to meet the diverse needs of our customers.
In the field of environmental testing,
we offer a wide range of equipment, including ovens for heat aging tests,
as well as stress relaxation and creep testers.
These instruments are manufactured by Elastocon,
a world-renowned specialist in rubber and plastic testing equipment.
We also handle high-quality testing machines from around the world,
such as ergonomically designed optical measurement systems from Vision Engineering.
CHAREON TUT CO., LTD. (CT)
Established in Thailand in 2004, CHAREON TUT Co., Ltd. (CT) is a specialized manufacturer of mixing equipment for rubber, plastics, and food materials.
The company’s parent firm operates in rubber processing, while its group company engages in precision metal machining.
The founder himself also serves as a lecturer in mechanical engineering at a Thai university, bringing deep academic and technical expertise to the business.
Bareiss GmbH
Founded in Germany in 1954 by Mr. Heinrich Bareiss, Bareiss has long been a pioneer in the field of hardness testing for elastomer materials and has maintained the No.1 market share for rubber durometers in Europe.
In Japan as well, Bareiss products are widely trusted and used by many customers, including major rubber component manufacturers.
Cometech Testing Machines Co., Ltd.
Founded in Taiwan in 1994, Cometech specializes in the development and manufacturing of various testing machines, including material testers, abrasion testers, and impact testers.
The company designs and produces testing equipment for plastics, rubber, paper, and metals, while also providing OEM services.
With over 10 years of OEM experience in Europe and the United States, Cometech has earned a solid reputation for reliability and proven performance.
Elastocon AB
Elastocon was founded in 1987 by Mr. Göran Spetz, who had previously worked as a research engineer at the Swedish National Testing and Research Institute (SP).
The company’s first product was a stress relaxation measurement system, developed shortly after the ISO TC 45 committee introduced the ISO 3384 test method.
Since then, Elastocon has successively developed a range of advanced instruments—including cell ovens for precise heat aging and stress relaxation testing at high temperatures, as well as fogging testers for evaluating windshield fogging in automobiles.
Today, Elastocon designs, manufactures, and supplies more than 80 types of testing instruments for rubber and plastic materials worldwide.
Our Maintainance System
Maintainance and Technical Support is the top priority to us.
Our clinets can choose from
1 year service interval, 2 year service interval, and 3 year service interval.
※Even for other years, it can be set according to customer’s request.