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Home Innovation

Shellmet helmet is made of scallop shells – plus it looks like one

admin by admin
January 10, 2023
in Innovation


Scallops’ soft bodies are well-protected by their hard shells, so … could those same shells protect human heads? That question was asked by the Japanese designers of the Shellmet, which is a helmet made partially of scallop shells.

The Shellmet is the result of a partnership between Koushi Chemical Industry and Sarufutsu Village, the latter of which is a fishing community that generates approximately 40,000 tons (36,287 tonnes) of waste scallop shells every year. Although there are some potential uses for that waste, most of the shells reportedly end up just sitting around in smelly heaps for long periods of time.

Utilizing a process developed by Prof. Hiroshi Uyama from Osaka University, the shells are first boiled and sterilized, then pulverized and rendered into calcium carbonate powder, which is mixed with powdered discarded plastic and rendered into pellets. Those “Shellstic” bioplastic pellets are subsequently poured into a helmet mold and heated, causing them to melt.

Once the bioplastic has cooled and hardened, the result is a helmet with a scallop-shell-inspired ribbed design. That design, along with the inclusion of the calcium carbonate, is claimed to make the helmet about 33% stronger than it would be otherwise. Additionally, the production process is said to generate approximately 36% fewer greenhouse gas emissions than if 100% virgin plastic were used.

The Shellmet is intended mainly for use by fisheries workers – a trial of that application is planned to begin this spring (Northern Hemisphere). The helmet may also be offered for use in disaster scenarios, or other situations in which hard hats are required. Safety standard certification is currently in the works.

Perhaps a little prematurely, the Shellmet is already available for preorder. It’s being offered in five colors, and is priced at 4,800 yen (about US$36).

There’s more information in the video below.

SHELLMET|Protect Heads, and the Earth.|English version

Source: Koushi Chemical Industry





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