From Fishing Nets to Filaments: Chulalongkorn University's Innovative Technology Turns Marine Waste into 3D Printing Material

April 6, 2026 – Researchers at Chulalongkorn University have developed a breakthrough recycling technology that transforms discarded fishing nets into high-value 3D printing filaments, offering a practical solution to marine waste problems while supporting the circular economy and improving the livelihoods of coastal communities.

The project is led by Dr. Nuttapol Risangud from the Petroleum and Petrochemical College. His research was inspired by the growing problem of plastic waste in Thailand's coastal waters, particularly abandoned fishing nets, also known as "ghost nets." After being discarded, these nets continue to trap marine life and eventually degrade into microplastics that enter the food chain, threatening ecosystems and human health.

Although discarded fishing nets are collected in Thailand, they are rarely converted into high-value products. This innovative technology transforms these nets into usable engineering materials. The research team initiated a project to recycle nylon from fishing nets and process it into filaments suitable for fused deposition modeling (FDM) 3D printing.

The production process involves multiple steps: collecting and cleaning the fishing nets, shredding them into flakes, melting and mixing the material with additives, and finally extruding it into standard 1.75 mm diameter filaments. Converting the material into pellets before extrusion allows researchers to better control quality and consistency, addressing the variability of waste sources. The resulting filaments can be used in a wide range of applications, from consumer goods to industrial prototyping. The team is focusing on exploring its use in automotive components, such as motorcycle parts, which require lightweight and durable materials.

Beyond its technical potential, this innovative technology brings environmental and socioeconomic benefits. It creates market demand for recycled fishing nets, encouraging net collection and reducing marine pollution, while enabling fishing communities to generate additional income through value-added processing.

However, challenges remain, including maintaining material quality consistency, reducing water consumption during the cleaning process, and building confidence in recycled materials. The team is addressing these challenges by refining formulations, optimizing processes, and strengthening close collaboration with industry.

The project is currently at an early stage, aiming to scale up production, conduct market testing, and ultimately transfer the technology to local communities. If successful, it will serve as a model for sustainable innovation—turning marine waste into economic opportunities while helping to restore ocean ecosystems.