Mycoworks raises $125 million to build new mushroom leather factory

Inside a small factory in Emeryville, California, in trays full of sawdust, the biomaterials startup MycoWorks is rising mycelium—the root-like a part of mushrooms—to create dense layers of a cloth that appears, feels, and bends like leather constituted of cows. The pilot plant, which has been in operation during the last 12 months, can solely produce the fabric in small volumes. However the firm simply raised $125 million in a Collection C funding spherical, which it would now use to build a mass-production facility in South Carolina.

[Photo: Lindsey Filowitz/courtesy MycoWorks]For the style manufacturers which can be starting to use the fabric—like Hermès, which is making a luxurious purse from one model of the mushroom leather—it’s a method to keep away from the environmental and moral issues that include animal leather with out turning to artificial alternate options constituted of plastic. One current nonprofit report linked dozens of trend manufacturers to deforestation within the Amazon due to cattle ranching. Elevating cows provides to local weather change and water air pollution, and though they’re additionally being raised for meat, demand for leather helps prop up the system. “The trade is in a little bit of a conundrum the place they’ve to meet these new sustainability calls for that buyers are putting on them,” says Matt Scullin, CEO of MycoWorks. “They usually even have to develop.”

[Photo: Alyssa Dunca/courtesy MycoWorks]Older leather alternate options are constituted of plastics like PVC (the phrase “pleather” is a portmanteau of “plastic leather”). Even some newer alternate options also use plastic, together with one other fungus-based leather that embeds ground-up mycelium in plastic. However MycoWorks, which holds greater than 65 patents for its course of, says it makes its materials solely by way of the expansion of mycelium.

[Photo: Jesse Green/courtesy MycoWorks]“We fill a tray with a waste biomass, corresponding to sawdust, we inoculate or seed that tray with the pressure of mycelium, after which we carry out some methods,” Scullin says. “We get this mycelium to develop on the floor of the sawdust in a really dense, sturdy layer that we then peel off and carry out chemistry on.” The ensuing materials is then tanned, however utilizing a special course of than is used on animal leather. “It makes use of a lot much less water,” he says. “It doesn’t use any chromium or any metallic tanning. It’s a much more sustainable tanning course of than what’s used for animal leathers.”


[Photo: Pol Rebaque/courtesy MycoWorks]The fabric will also be personalized in ways in which conventional leather isn’t. “Once we get an order, prospects will specify whether or not or not they need one thing that’s extra like a sheepskin or a calf disguise, as an example, it has a sure softness and a sure thickness,” Scullin says. “After which we develop precisely to that specification.” The corporate’s course of for adjusting the leather is proprietary, however it entails altering the rising situations of the mycelium, and it now has a library of present totally different supplies with totally different options that prospects can select from.

It’s cost-competitive now with high-quality animal leather, Scullin says, and because the firm scales up, it would launch extra mass-market merchandise at lower cost factors. The new factory, scheduled to open early subsequent 12 months, can be in a position to produce a number of million sq. ft of fabric annually. It’s a primary step in starting to exchange standard leather. “The limiting issue for progress is admittedly our capability to to build extra manufacturing capability,” Scullin says. “However it is a good place to be.”