The drink in the straw cup is colored. What if the straw turns yellow and can't be washed off?

1, suction brush Some suction cups are purchased with a suction brush. Parents can clean the straw directly with a straw brush. If the straw cup does not have its own straw brush, the general pregnant and baby stores also sell straw brushes, and parents can buy them themselves.

2. Clean the straw with wool, use a slightly larger hairpin, and then choose wool with the same thickness as the straw. Thread the wool through one end with a hairpin, pull it out from the other end, and pull it back and forth a few times, and the inner wall of the straw will become as bright as new.

3. Clean the straw with salt and detergent. It is not easy to rinse off, so it is not recommended to clean the straw. You can pour a small amount of salt into the straw, and then turn the straw a few times with your fingers. When you flush it with water, the dirt will flow away with the salt.

Extended data

principle

The pipe is mainly realized by atmospheric pressure. In atmospheric environment, when one end of the straw is inserted with liquid, and the other end draws air or liquid from the straw, the pressure in the tube is reduced to be lower than that in atmospheric environment, so that the atmospheric pressure outside the straw acts on the surface of the liquid outside the tube, pushing the liquid into the straw to balance the pressure inside the tube and the pressure outside the tube.

history

In the19th century, Americans liked to drink cold and light wine. In order to prevent the hot air in the mouth from reducing the freezing strength of wine, they drink directly without their mouths and suck with hollow natural straws, but the natural straws are easy to break and their own taste will penetrate into the wine.

At that time, Marvin Stone, an American cigarette manufacturer, got inspiration from cigarettes and made a paper straw. After tasting, it will neither break nor smell. Since then, people not only use straws when drinking light wine, but also like to use paper straws when drinking other cold drinks.