It is useless for a mattress to have good looks, and it is the meaning of its existence that can gently arouse your drowsiness. And whether it is comfortable or not has a lot to do with its material. You know, the material of the mattress determines its texture and touch.
Speaking of materials, memory foam and latex are common materials for mattresses with better elasticity, and some people may have difficulty choosing, so I will sort it out a little.
The main component of memory foam is polyurethane, derived from space technology, and GPS
The two core technologies of space
。 Widely used in the aerospace field spacecraft lifesaving systems, aircraft seats and other designs, this material is called
Space memory foam
。
Memory Mian, also called”
Slow rebound sponge
Inert sponge
Zero pressure cotton
“, because when it is subjected to pressure shocks, two deformations occur at the same time.
One is
Elastic deformation
(accumulative deformation), part of the energy it accumulates, can slowly restore the memory foam material to its pre-compression shape after the external force is removed.
The other is
Plastic deformation
(energy-dissipative deformation), which absorbs more than 90% of the impact energy and shows little rebound force on the pressurized object (or human body) in contact with it.
This buffering and decompression effect is due to the ” memory foam material “
Uniform pressure dispersion characteristics
“。 When subjected to pressure impact, the molecular structure of the memory foam material will be “flowing” shifted, and the contour of the pressure surface is deformed to fit the contour of the pressure surface, spreading the support point to the entire contact surface, so that the pressure can be dispersed on the entire contact surface.
As a simple example, an egg will break when it is knocked, but if you hold the whole egg with your hand, the egg will not break easily. Because the former concentrates the force point, the latter is that the entire eggshell is a force surface, which can evenly disperse the pressure to all parts of the eggshell.
The warmth of the memory foam VS the non-temperature sensation
The so-called temperature sensation means that the softness and hardness of the material change with temperature. The advantage is that it can shape and remember the curve of the human body according to the body temperature, whether lying on the back or side, it can automatically shape the comfort effect according to the needs of the human body, and effectively dissolve the pressure of the human body into zero pressure.
And just like a double-edged sword, the warm-sensing characteristic of memory foam is both its characteristic and its biggest drawback. Memory foam not only perceives the temperature of the human body, but also is affected by the temperature of seasonal changes. At temperatures below 10°C, the memory foam material will harden, and below 0°C, it will be as hard as a stone. This greatly affects the comfort of the memory bedding. In addition, because the memory temperature will cause the memory to store heat, the absorbed heat cannot be dissipated, giving people the feeling of not breathing.
In the early days of memory foam marketing, this disadvantage is particularly significant, the lower the temperature, the easier it is to lose elasticity, and the harder it will be. Now it is solved by “non-temperature memory foam”, non-temperature memory foam’s thin cushion and pure foam mattress are not expensive, so it is still more popular.
In addition, the slow rebound memory foam material is a comfortable revolution, is the perfect combination of softener durability, in an authoritative test, after 80,000 times of stress testing, the wear rate of the material is less than 5%, while the wear rate of other high-resilience materials of ordinary polyurethane cotton is about 10-15%.
Some brand stores will do an iron ball resilience test on the foam mattress, if the iron ball rebound height reaches 50% or higher in the resilience test, it is
Highly elastic sponge
。 It has super resilience and air permeability, low encounter loss, high compression load ratio, and good flame resistance, and its heat aging, wet aging and power fatigue are better.
Memory foam was originally NASA’s invention for aircraft cushions, and later commercialized for medical equipment and some sports equipment, high-quality memory foam products in the body pressure dispersion performance is very prominent, and also has an extremely comfortable sleep experience, but some memory foam products also have such as turning over slightly difficult, slight stuffiness and temperature dependence shortcomings, poor quality memory foam may cause respiratory tract inflammation. Everyone should have the awareness to distinguish between truth and fake.
Latex sponge is a porous rubber material with a cell structure of all or most of the pores, and a small number of non-pores. It is the largest amount of latex consumed in latex products, with high elasticity, shock absorption, compression fatigue resistance, good bearing capacity, comfort and durability.
Compared with the “slow rebound” characteristics of memory foam, latex is “rebound”, that is, we often say “fast spring”. The ultra-high elasticity and fit of natural latex allow latex mattresses to carry human bodies of different weights, have a certain reaction force on the human body, and can fully fit the curve of the body, deepen the contact area with the mattress, so that all parts of the body maintain the physiological characteristics of the human body. Adapt to any posture of the sleeper with the best support, relieve backache caused by sleep and difficulty in falling asleep.
But latex mattresses alone cannot stop the oxidation process, especially when exposed to ultraviolet rays, the oxidation process is faster and will turn into dry bread like crumbs falling off everywhere.
In addition, latex has an allergic effect, and about 8% of people will be allergic to latex, which needs to be noted. Consumers need to take this into account when purchasing mattresses.
Speaking of which, it has to be mentioned
Memory latex
Memory latex is a high-end latex, designed and produced by Radium Foam, one of the world’s largest latex manufacturers, as an upgrade to its “Talalay” process latex (we have introduced two latex production processes: the two mainstream processes of natural latex: Dunlop vs Tralei).
The production of memory latex is more complex than the “Talalay Tralei” process, not only has the curve memory performance of memory foam, but also the advantages of latex breathability, inclusiveness and support, which is a new technology in recent years, and it is also the most high-end mattress application material.
Relatively speaking, latex has a shorter rebound time than memory foam, is a natural material, has its own breathable pores, and has the effect of antibacterial inhibition, and the cost is higher than that of memory foam; Memory foam support and dispersion pressure are not as good as memory latex; Latex feels the same in all seasons, and the close effect is the same; Memory foam is hard in winter and soft in summer; Memory foam has strong shock absorption ability, and the reason why astronauts use this is to absorb shock.
。
。
