Do You Really Understand The Spring Partition In The Mattress?

  • JLH
  • 2022/11/28
  • 110

Many small partners choose mattresses and

we all know to care about springs, sponges, latex and other mattress materials.

They may even be curious about the details of different spring structures, partitions, anti-interference and other detailed technologies.

The weight of a person is not evenly distributed. For a person of a standard build, the weight of the back, waist, buttocks and other trunk parts accounts for more than 60% of the total body weight, and for a person who is overweight, it will account for 70% or more.

When a man with a height of 175cm and a weight of 68kg is lying on a spring mattress, the middle section of the mattress supports about 40kg, and the two ends of the mattress only need to support about 17kg and 11kg respectively, which is a huge difference. If the middle section of the mattress cannot provide stronger support, it is easy to cause the middle part of the body to bend downward.

In order to solve this problem, let the mattress provide different supporting forces in different areas, which can be achieved by adjusting the mechanical design of the spring mattress, so as to avoid sinking the heavier parts too deeply, so there is a “zonal design”.


Zone mattresses are developed on the basis of independent springs. At present, there are three zones, five zones, and seven zones on the market. The partitioning principle is to achieve different mattresses by changing the wire diameter (the thickness of the spring steel wire), adjusting the compression ratio (increasing the height of the spring before bagging) and changing the number of turns (increasing the number of spring coils). Softness and support.

The three-part spring mattress is a partition design for the head, shoulders, back, waist, hips and legs. Generally, the two sides are soft and the middle is hard, so that the waist can be properly supported.

The five-zone spring mattress is designed for the five zones of the head, shoulders, back, waist, and legs, with different hardness settings. Compared with the three-zone spring mattress, it has a more delicate supporting force.

According to ergonomics, the seven zones are designed according to the force of the seven zones of the human body including the head, neck, shoulders, back, waist, buttocks, and legs. It can fit the curve of the human body and allow the spine to stretch healthily while sleeping.

Through comparison, we found that the head, shoulders, back, waist and hips, and legs of the partitioned mattresses on the market are all integrated. No matter whether they are too hard or too soft, the waist can never get strong support. The same is true for non-partitioned mattresses. . In comparison, the partitions of the head, shoulders, back, waist, buttocks and legs of the partitioned mattress are more delicate and scientific, which can respectively meet the different hardness requirements of the shoulders, back, waist and back for the bed core. A combination of springs with appropriate hardness can improve the comfort of the mattress.

Partition Design Basis Of Foam Mattress

Firmness is the core issue of mattress design. Let’s talk about the “good” mattress first. The standard mattress is too hard and too soft to be comfortable, and it is easy to make people form bad sleeping positions. This sleeping position is unnatural.

The spine posture is most natural when a person is standing. At this time, the spine is in an “S” shape and recessed by one centimeter. To achieve comfortable sleep, the back gap should be controlled at one-half of the back gap when the spine is naturally curved, that is, 2-3 cm is appropriate. However, due to the different body types of different people, the extreme value of back gap is different for different people. The suitable range of waist and back clearance for lean people is 2-2.65 cm. The suitable range for fat people is 2-2.4 cm. The suitable range of waist and back clearance for ordinary people is 2-2.85 cm. centimeter.

The harder the bed core at the waist position, the smaller the contact area between the shoulders, back and buttocks and the mattress, and the more dispersed the force is, the greater the force on the waist is, the greater the pressure on each part will be. The harder the bed core at the shoulder and back position, the smaller the contact area between the buttocks and the mattress, the more concentrated the force, the greater the pressure, the smaller the pressure on the waist and the smaller the force. The harder the bed core at the buttocks, the larger the contact area between the shoulders and buttocks and the mattress, the more dispersed the force, the smaller the pressure, and the more concentrated the force on the waist, the greater the pressure.

Combining the above two design bases, it is generally believed that for people with leaner body types, mattresses with different overall firmness, softness of the bed core at the waist, and small gradients in the differences between the shoulders, back, and hips are generally considered suitable. Overweight people are suitable for partitioned mattresses with hard cores at the waist, medium-hard cores at the shoulders and back, soft cores at the buttocks, and a large gradient between the cores at the waist and buttocks. Generally, people with a standard body type are suitable for partitioned mattresses with soft bed cores for the shoulders, back and buttocks, and medium-hard bed cores for the waist.

In fact, the zoning design of mattresses is a concept of continuous development. In my opinion, the key to structurally partitioning mattresses is not the number of partitions, but how to consider the rationality of the partitions from an ergonomic point of view to make more detailed elastic settings for each domain.


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