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Article: The Second Life of a Fishing Net

The Second Life of a Fishing Net

Two hooded jackets held up side by side, one in rust tie-dye, one in pale pastel tie-dye.

How a garment gets unbuilt to the molecule and built back. Chemistry, not virtue.

Start at the bottom of the sea. A fishing net, lost or cut loose, does not stop working when its owner does. It keeps fishing, snagged on a wreck or a reef, for decades. Volunteer technical divers, organized through networks like Healthy Seas, go down and cut these ghost nets free by hand, in the Adriatic, the Aegean, the North Sea. That salvage is the first link in one of the stranger supply chains in clothing.

Recovered fishing nets in white, rust and brown, piled for regeneration.
Recovered ghost net, sorted for regeneration.

Here is the part that makes the whole thing possible, and it is chemistry. Most fishing nets are nylon-6, a plastic with an unusual property: it is built from a single repeating molecule, a monomer called caprolactam, snapped together in a chain like one long zipper. Snap a zipper together and it can be unzipped. Ordinary recycling melts plastic down, degrading it a little every cycle, which is why most recycled material is worse than what it came from. Nylon-6 does not have to be melted. It can be chemically unzipped, all the way back to caprolactam, the identical raw molecule the oil industry makes from crude. The output is not similar to virgin nylon. It is virgin nylon, indistinguishable, and the loop can in principle run forever.

The industrial geography is oddly romantic. The nets are sorted and washed at a facility in Slovenia, then trucked to a regeneration plant in Ljubljana that performs the unzipping: depolymerization, purification of the caprolactam, then polymerization back into nylon-6, pelletized. The pellets travel to a 1960s factory in Arco, at the top of Lake Garda, where they are melted and forced through spinnerets into filament and spun into yarn. The system, trademarked ECONYL and switched on in 2011 by the Italian firm Aquafil, took years of failure to build. The company’s chief executive later admitted the team had wildly underestimated the difficulty and said he was lucky not to know. Nobody involved describes it as easy. They describe it as chemistry that finally cooperated.

Clear pellets of regenerated nylon-6 in a perforated steel drum.
Regenerated nylon-6, pelletized, ready to spin.

From Lake Garda the yarn goes to the mills and is knitted into swim fabric. Much of it reaches a cutting table in Karachi, cut, sewn, and finished into a short by hands a few kilometers from the Arabian Sea. Then you wear it into the water. A net that spent years fishing a reef ends its second life swimming, which is either poetry or engineering depending on your temperament. We lean engineering.

Spools of yellow, red and black yarn stacked on trolleys in a mill.
Filament off the spinneret, on its way to yarn.

This is why our materials copy says regenerated rather than recycled, and why it says it quietly. The word is a technical distinction. The shell of the short exists because somebody worked out how to unzip a molecule, a diver learned to cut nets off a wreck, and a factory on an Alpine lake learned to spin the result. The rest is just a garment doing its job.

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