THE WASTE STREAM
Issue No. 4: Waste Is a Design Problem
“There is no such thing as waste – only wasted resources. When you can create value from waste, it isn’t waste anymore.” — John Verhoeven, Recycling Manager, The Ocean Cleanup
For decades, plastic has been framed as the villain of modern environmentalism. But what if the problem isn't the material itself?
What if the problem is our inability—or unwillingness—to recognize value after a product's first use? As John Verhoeven of The Ocean Cleanup observed, "There is no such thing as waste, only wasted resources."
It's a simple idea, but a powerful one.
The moment a discarded plastic bottle becomes raw material for a new product, it ceases to be waste. It becomes a resource. Tu Tiki’s SUPcycled™ materials embody that philosophy.
Our fabrics begin as post-consumer plastic bottles that have already served their original purpose. Through collection, sorting, cleaning, shredding, melting, and extrusion, those bottles are transformed into high-performance recycled polyester yarns capable of delivering the same durability, stretch, UV protection, and adventure-readiness as polyester made from newly extracted petroleum.
But how does a discarded bottle actually become activewear?
The answer is a combination of chemistry, engineering and logistics.
Every year, billions of plastic bottles are produced worldwide, from polyethylene terephthalate (PET), a plastic made using raw materials derived from fossil fuels. These bottles are manufactured by melting PET resin into small preforms, which are then heated and expanded into their final shape using high-pressure air. Many are used only once before being discarded.
While recycling alone cannot solve the global plastic pollution crisis, advances in textile technology have created new opportunities to give certain plastics a second life. At Tu Tiki, we call this process SUPcycling™: the transformation of Single Use Plastics into useful new materials and textiles.
To understand why this matters, it helps to understand both the problem and the opportunity.
The Problem with Single-Use Plastic Bottles
Most beverage bottles are made from PET, a lightweight, durable plastic manufactured using raw materials derived from fossil fuels. The material itself is remarkably useful. The problem is not its performance. The problem is how briefly we use it.
A bottle may serve its purpose for a few minutes. The material used to make it can persist for centuries.
According to the OECD, only about 9% of plastic waste generated globally is recycled. Large volumes are landfilled, incinerated, or escape formal waste systems altogether. Meanwhile, the United Nations Environment Programme estimates that between 19 and 23 million tonnes of plastic enter aquatic ecosystems annually.
Why Bottles Can Become Activewear
The same characteristics that make PET valuable for beverage packaging also make it valuable for textile manufacturing. In fact, polyester—the world's most widely used synthetic textile fibre—is chemically similar to the PET used in plastic bottles.
This means that instead of extracting new petroleum resources to manufacture virgin polyester, existing PET bottles can be collected, processed, and transformed into recycled polyester, often referred to as rPET or SUPcycled™ fabric.
SUPcycling™
Collection and Sorting
The journey begins with the collection of used PET bottles through recycling programs, deposit-return systems, and waste recovery initiatives like The Ocean Cleanup, Sungai Watch, and Save Jeju Bada.
At recycling facilities, bottles are sorted by material type, colour, and quality. Advanced optical systems and manual inspections help remove contamination and ensure only suitable PET enters the process.
Cleaning and Processing
Labels, adhesives, dirt, and residues are removed through extensive washing and sanitisation. The bottles are then shredded into small pieces known as PET flakes. These flakes become the raw material for the next stage of production.
Converting Flakes into Pellets
The PET flakes are melted, filtered, and purified. The resulting material is formed into uniform pellets that serve as a standardized feedstock for textile manufacturing.
Spinning Recycled Fibers into Fabric
The pellets are melted again and pushed through a device called a spinneret—a metal plate containing tiny holes. As the molten polymer exits and cools, it forms continuous filaments that are stretched to improve strength and elasticity. At this stage, what was once a discarded bottle has become a textile fibre. These fibres are transformed into yarns and knitted into technical fabrics.
Garment Construction
The SUPcycled™ fabric is cut, sewn, and assembled. The result is soft, durable activewear capable of supporting hiking, swimming, travel, yoga, trail running, and everyday adventure—all while incorporating material that might otherwise have become waste.
At Tu Tiki, resource efficiency does not end when a bottle becomes fabric. We also invest in manufacturing technologies designed to reduce waste throughout the production process. Seamless SHIMA SEIKI knitting systems help minimize fabric offcuts, ZÜND Swiss precision cutting technologies maximize material yield, and high-quality JUKI sewing equipment is selected to create garments designed for long-term use. Even the dyes used are OEKO-TEX® certified, water-based, and free from harmful chemicals.
Because reducing waste is not a single step. It is a design philosophy that extends from material recovery to the finished garment.
Not Perfection, but Progress
Recycling PET is not a silver bullet. But sustainability is rarely about perfection. It is about improvement. It is about redesigning systems that recognize waste as a resource and keep valuable materials in circulation for as long as possible.