The straw was invented by Marvin Si Tong of the United States in 1888. In the19th century, Americans liked to drink cold and light wine. In order to avoid the hot air in their mouths, 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. After the invention of plastics, the paper straws were replaced by colorful plastic straws because the flexibility and aesthetics of plastics were better than those of paper straws. The inventor did not apply for a patent.
Second, what is the principle of straw?
The straw is based on the principle of atmospheric pressure. When using, suck some air into the straw, which will reduce the pressure in the pipeline. In order to balance the air pressure, the air pressure will force the liquid in the tube to rise. When the inhalation stops, the liquid in the tube drops and the pressure returns to balance. This is the wonderful principle and application of straw.
Third, the production of straws.
Production method: after melting the plastic, it passes through an extrusion die, which is called a die, and then the machine extrudes the plastic like a syringe (this process is continuous, and there is a screw on the machine, which will extrude at a certain speed). When the plastic is still softening, it is sent to the machine, directly molded, and then cut by the machine, which becomes the straw we see in sections.