1. Selection skills of mattresses in memory cotton
1. Density
Density is the basic index of high-grade slow-rebound materials. Generally, the density of polyurethane can reach 7~15D in molding process and 4~1D in cutting process. Due to technical bottlenecks and equipment differences, the density of polyurethane produced in China is generally lower than 1D, while the highest in foreign countries can reach 15D, and even if it is the same. It is mainly caused by the difference of formula, technology and raw materials, that is to say, the high-grade slow-rebound material must have high density, but only high density is not necessarily high-grade material.
2. Rebound time
Many consumers think that the longer the rebound time is, the better, which is a misunderstanding. The better rebound time is about 3-5 seconds. Too short to have a slow rebound effect. Too long will make your body stiff (think if you turn over, it hasn't rebounded for a long time).
3. Manufacturing process
There are two manufacturing processes of slow rebound: cutting and molding. Cutting is to buy the finished slow-rebound sponge and cut it into the shape of a pillow. Because the molding is based on cutting rather than mold+additives, no other additives are added, even pure polyurethane can only achieve a density of 4~7. Molding is made by a series of processes such as foaming and vacuumizing with a mold, which is much more complicated. When the density is increased to about 7~1, it feels good and its service life is related to this.
4. Feel and temperature sensing
The high-grade slow rebound sponge feels very comfortable, and it feels like kneading dough. The almost slow rebound will either feel a little dizzy or stiff. At the same time, this kind of high-grade slow rebound has good temperature sensing, which will become softer with the increase of temperature. When the human body contacts with the slow rebound material, the pillow will become softer with the transfer of body temperature, which can better wrap and support the human body.
5. Service life
High-grade slow rebound will not be deformed after being used for more than 5 years, but it can only be used for 1-2 years if it is made by cutting technology or the quality is poor.
2. Brand recommendation of memory cotton mattress
1. The intimate and humanized design of Neumann is very helpful for children's growth. Tianninger memory cotton mattress is an imported safe, environmentally-friendly and healthy mattress, with comfortable and smooth surface and skin friendliness. And can effectively protect the spine from keeping a natural curve during sleep and promote the blood circulation of blood users.
2. There is no comparability between latex mattress and memory cotton, okay? Latex comes from natural rubber tree juice, which has the function of anti-bacteria and anti-mite. Latex is highly elastic, and it can be restored to its original appearance immediately after being pressed. Latex mattress also has the function of draining wet air. Of course, the price of latex material is also more expensive.
3. Hanniwei memory cotton mattress is a famous memory cotton mattress brand in the world, and the production of the product fully considers people's sleep needs. Most elderly people can't improve their low back and leg pain, that is, they choose the wrong mattress. Then the design of this mattress fully considers the division of human bones, and the curve of the mattress design caters to the structure of human bones, so that people can relax better during sleep.
It can be seen that the selection of mattresses in memory cotton needs attention. For example, if the service life is considered, the high-grade slow-rebound mattress will not be deformed after being used for more than 5 years, but it can only be used for 1-2 years if it is made by cutting technology or the quality is poor.