The main component of the memory pillow is memory foam, which was developed by NASA for the protection and comfort of astronauts, and then gradually developed into civilian use. After this material is compressed by external force, it will flow and be displaced and deformed. The molecules of the material are restricted by van der Waals force and rebound, and can fit the pressure object.
Currently there are two types of memory foam materials on the market: pure natural memory foam and synthetic memory foam. The raw material of pure natural memory cotton is produced from some crops of soybeans and peanuts, and is refined by technological means. At present, the technology is in the hands of the United States. This material is extremely expensive. The material of synthetic memory cotton is mainly made of polyurethane through technical means.
Although the two kinds of memory foam are made of different materials, their solidity characteristics are the same. The newly produced memory foam has a slight smell, but this smell is not harmful to the human body. Generally, the smell of memory foam pillows disappears in about 3-5 days.
Latex pillows are currently available in two types of pillow materials: natural latex and synthetic latex. Natural latex is fermented from oak tree latex, and the latex is made into a honeycomb form through technological means. This material is a fast-elastic material molecule.
Natural latex has a very strong smell, and it takes 6-9 months to disperse. Therefore, when the factory produces, green tea, matcha and other materials are added to reduce the smell. However, this rubber sap material is relatively expensive.
Synthetic latex is made of chemical plastic materials. This material is very cheap to produce. Therefore, synthetic latex has become a profiteering industry for some unscrupulous businessmen.
Nowadays, 80% of the latex pillows in the domestic market are basically synthetic latex, which is made of 30% oak latex and chemical materials. Because this material will produce harmful gases, the factory usually adds fragrances during production, so the latex pillows you buy are very fragrant, and they must be counterfeit natural latex pillows.