Traditional antimicrobial materials often rely on metal ions such as silver and copper, which may pose potential safety concerns. As medical packaging and devices face increasingly stringent material safety requirements, could there be a safer alternative?
At the 8th CPRJ Medical Plastics and Rubber Conference & Showcase, Professor Chi Wai Kan, Associate Dean of the School of Fashion and Textiles at The Hong Kong Polytechnic University (PolyU), shared an interdisciplinary perspective on this topic. He introduced the practical applications of the research team's IMU+ organic antimicrobial masterbatch technology in medical packaging and healthcare.
From Textiles to Advanced Materials: How Does Organic Antimicrobial Technology Work?
Some may wonder why textile research has expanded into medical packaging. Professor Kan explained that synthetic textile fibers are essentially polymeric materials. This provided the team with an opportunity to adapt antimicrobial technology originally developed for textiles to plastics and packaging materials.
Research and development began in 2012. In 2019, a research project related to face masks accelerated the commercialization of the technology, leading to the development of the IMU+ brand.
IMU+ uses a metal-free organic antimicrobial system that does not rely on silver or copper ions. Its mechanism involves incorporating positively charged components into the material. When these components come into contact with microorganisms, including bacteria, viruses and fungi, they disrupt the microbial cell membrane, delivering antibacterial, antiviral and antifungal functions.
As the active antimicrobial components are embedded within the material matrix, antimicrobial functionality can be retained even when the surface experiences wear. Third-party testing has also demonstrated stable antimicrobial performance following repeated wiping with alcohol and bleach.
Compatible with Multiple Plastic Processing Methods and Applications
The antimicrobial masterbatch offers broad material and processing compatibility. It can be incorporated into commonly used plastics such as PP, PE and HDPE, and processed using established manufacturing methods, including injection moulding, extrusion and 3D printing. Available supply formats include masterbatches and blended compounds, allowing integration into existing production lines.
Potential applications include pharmaceutical packaging films, medical device housings, tubing, medical collection bags and other healthcare-related products. The technology can also be used in the manufacture of antimicrobial consumables for public and institutional settings.
Compared with conventional metal-based antimicrobial materials, this metal-free organic approach offers a differentiated alternative, with the potential to reduce certain material-related safety concerns and support a broader range of applications. Its overall carbon footprint can also be considered as part of a product's material selection and sustainability assessment, depending on the formulation and manufacturing process.
The technology has received patents in China, the UK and the US, as well as international awards. It has also undergone testing relevant to demanding healthcare applications, supporting its potential use in high-standard medical environments.
To advance commercialization, the team follows a model combining fundamental research, technology transfer and collaborative manufacturing. In 2026, a production facility was established in Fujian, enabling scaled manufacturing and providing pharmaceutical packaging and medical consumables manufacturers with a potential route to upgrading their materials with antimicrobial functionality.
Material Selection and Practical Considerations for Medical Applications
For pharmaceutical packaging and medical product development, Professor Kan's team offers a range of material formats, including antimicrobial plastic masterbatches, 3D printing materials, antimicrobial synthetic leather and medical collection bags. Functional modification is also possible for materials such as synthetic leather, EVA and various films.
According to Professor Kan, the metal-free organic approach offers distinctive advantages over conventional antimicrobial technologies in healthcare applications. Manufacturers can assess its suitability based on their specific product requirements, material compatibility, processing conditions and performance expectations.
Conclusion
The evolution of pharmaceutical packaging and medical polymer materials requires a balance between material safety and sustained antimicrobial performance. Compared with conventional metal-based approaches, metal-free organic antimicrobial technology offers an alternative pathway for enhancing the functionality of medical packaging and related products.
Interdisciplinary collaboration is an important driver of innovation in medical materials. For scientific research to deliver meaningful industrial impact, it must be continuously refined in line with manufacturing processes and real-world application requirements.
Looking ahead, antimicrobial materials that combine a favorable safety profile, manufacturing scalability and broad processing compatibility could play an increasingly important role in the next generation of pharmaceutical packaging and medical products.
For more information, please contact info@immunematerials.com to request further details.
Read the Original Article on Adsale CPRJ Plastics Network: https://www.adsalecprj.com/news/article_details/90541.html