There is no invincible fabric that can withstand spills of curry or splashes of mud, but there is a creature in nature that has this ability: the very familiar "Den-den-mushi-mushi snail," a familiar nursery rhyme.
Snails appear out of nowhere when it rains. Their trademark shells as they crawl around lazily have long been a familiar feature of the rainy season.
Snails are a type of gastropod that originally lived in water. Although they expanded their habitat onto land by evolving the ability to breathe with their lungs, their soft bodies, which are characteristic of mollusks, do not like to dry out. For this reason, they prefer to live in moist places, and their shells protect them from drying out.
The snail's shell is also an organ that protects the heart and other important internal organs. When a baby snail hatches from an egg, it has a thin, small shell with about one and a half spirals. As the snail grows, the number of spirals increases, and at that time, fine grooves called growth lines are engraved on the surface of the shell, just like the annual rings of a tree.
Now, since snails live in humid environments, you would expect their shells to get covered in mud and debris, but it's rare to see a dirty snail.
In fact, research has revealed that snail shells have a mechanism that makes them extremely resistant to dirt.
The surface of a snail's shell is formed with numerous small grooves, such as growth lines, spaced about 0.5 mm apart, and wrinkles spaced about 0.01 mm apart. These grooves and wrinkles make it easy for water to accumulate on the surface of the shell, so a thin film of water always covers the surface, preventing dirt from sticking to the shell. Moreover, the grooves also act as rain gutters, so any dirt floating on the water film will naturally wash away even with a small amount of rain.
The stain-resistant properties of snail shells are also used in human life, such as in exterior wall materials for houses that are stain-resistant and easy to clean. Perhaps one day we will see the development of stain-resistant fabrics inspired by snail shells.
Living Creatures Encyclopedia: Snail
There is no such thing as a snail called a snail. Biologically, they are land snails, and there are around 800 species known in Japan, including the Misuji snail. These creatures are extremely susceptible to dryness, and in summer they burrow into their shells, blocking the entrance with mucus and going into "aestivation." Incidentally, slugs are also part of the same land snail family. While snails are so popular that they have been made into songs, slugs are unpopular creatures that are killed off by being covered in salt simply because they abandoned their shells midway through evolution. How unfortunate.
Material with stain-resistant properties
By processing at the nano level* , every single fiber is covered with functional agents without any gaps, providing stain-resistant, water-repellent, oil-repellent, etc.
Nano level: An extremely small unit of one billionth of a meter.