What is the standard for the density of the sofa sponge and what are the specifications for the dens

Standard: High resilience sponge, the weight of each cubic meter of sponge reaches more than 25 kg of sponge.

The high-resilience sponge is a kind of sponge generated by active polyphosphorus and TDI as the main body, which is characterized by excellent mechanical properties.

Good elasticity. Large compression load, flame resistance, good air permeability.

Structure of sponge density:

Sponges are divided into three types: high-density sponge, medium-density sponge, and low-density sponge according to their structure. High-density sponges, with many holes and very full, are often used to make sound-absorbing cotton, sofa cushions, soft bags and other materials.

According to the interpretation of the national customs department, density 25 is high density, density between 24 and 18 is medium density, and density < 18 is low density.

One cubic meter per 30 kg.

High-density foam is a sponge that weighs more than 45 kg per cubic meter of sponge. High-density sponge has the characteristics of absorbing external force, delicate feel, soft and comfortable, and can meet a variety of market needs in automobiles, furniture, health care, toys and other industries. Commonly used sponges are divided into three types: high-density sponge, medium-density sponge, and low-density sponge according to their structure.

Density is an important indicator of matter, and the higher the density of the sponge, the smaller the void inside, the greater the mass. For example, 40 density means that the weight of a cubic meter of sponge is 40 kilograms, and 50 density is 50 kilograms per cubic meter.

The sponge process has been improved to judge density by weight. Instead, the density of the sponge pad is judged by more professional technical standards.

High-end sofa cushions should be used with a density of more than one cubic meter per 30 kg.

Qingdao sofa maintenance high-end sofa cushion should use a high-elastic foam sponge with a density of more than one cubic meter per 30 kg, and the back cushion should use a high-elastic foam sponge with a density of more than one cubic meter per 25 kg. In order to improve the comfort of sitting and lying, some foams are also softened without reducing the density, and some are equipped with vertical springs in the cushions to make the sofa have higher resilience and anti-aging performance.

The internal structure of the sofa is shaken vigorously by two hands, and if the Qingdao sofa is repaired, it means that the frame is firm. Discuss with the store guide, open the corner of the base cloth to observe, if there is no damage to the wood, no moth, no scars. The seams of the material are not nailed with nails, but connected with mortise or notches, and then glued firmly, then there is no problem.

Qingdao sofa maintenance should pay attention to the bottom surface of the sofa seat and the back is basically made of nylon belt and snake spring cross mesh structure, Qingdao sofa maintenance layer padding high-elastic foam, spray cotton and light body foam. This cushion has good elasticity and feels comfortable to sit on.

There are three types of sponge density specifications: high-density sponge, medium-density sponge, and low-density sponge.

The method of distinguishing sponges in the industry is divided by density, and the density of sponges is kg m3, that is, the weight of sponge per cubic meter. According to the interpretation of the national customs department, the density greater than 45 is high-density sponge, the density between 45 and 18 is medium-density sponge, and the density less than 18 is low-density sponge.

Generally speaking, the hardness of high-density sponges is also high, but it is not excluded that some high-density sponges will add ultra-soft additives to make the sponge super soft, which is used to make sound-absorbing cotton, sofa cushions, and upholstery materials. The hardness and softness of sponges of the same density are also different. Medium-density and low-density sponges are used as general protective materials.

High-density sponges are often used as sound-absorbing cotton, sofa cushions, soft bags and other materials.

The density of the sponge is 40. High-density sponges are sponges that weigh more than 25 kilograms per cubic meter. Now that the sponge process has been improved, it is no longer advisable to judge the density of the sponge solely by weight.

The sponge of the current process has high density and is much lighter than the sponge processed before. High-density sponges are no longer judged by weight alone.

The role of high-density sponges:High-density sponge, good elasticity and excellent resilience when pressed, relatively strong supporting force, can rebound quickly after extrusion and is not easy to deform, on the contrary, inferior and adulterated sponge is easy to dent and deform after being extruded by external force, and is not easy to rebound.

For example, when choosing a sofa sponge, it is best to choose a high-density sponge, now many people like a harder sofa sponge, but in order to choose a cheaper, he chose a low-density sponge but a sponge with higher hardness, this kind of sponge does not last long, and it will be easy to deform after a period of time. As long as it is a high-density sponge, the hardness of the sponge mainly depends on the customer's liking, and there is generally no problem.

Summary. We are glad to answer your question for the general sponge cushion, the national standard is 25kg m3, the international standard is 35kg m3. Bottom structure, high-elastic snake spring structure is better than bandage structure, high-quality bandage is better than inferior bandage structure, under the above two principles, European high-end sofas generally use sandwich structure design.

The Desheng Blanca sofa meets European standards. Some domestic brands have at least the standards, such as the left and right sofas, Gujia and other high standards!

We are glad to answer your question for the general sponge cushion, the national standard is 25kg m3, the international standard is 35kg m3. The bottom structure, the high-elastic snake spring is better than the bandage structure, the high-quality bandage is better than the inferior bandage structure, and the European high-end sofa generally adopts the sandwich structure design under the above two principles. The Desheng Blanca sofa meets European standards.

Some domestic brands have at least the standard, such as the left and right sofas, Gujia and other standard Kai chains are high!

Dear, hello, sofa sponge density refers to the tightness of the sponge material, generally the higher the density of the sponge, the better the elasticity and comfort, and the longer the life. However, different people have different needs for sofa hardness, and personal preference is also one of the factors affecting the choice. Therefore, there is no absolute superiority or disadvantage in the selection of sponges with densities of 45 and 50, and the choice should be made according to individual needs and actual conditions.

Generally speaking, the sponge with a density of 45-50 has good elasticity and comfort, and is suitable for sofa cushions and backrests. If you want your sofa cushions to be softer and more comfortable, you can choose a sponge with a lower density, or a foam with a higher density if you want a more rigid and durable sofa cushion. It should also be noted that in addition to the density of the sponge, the material, structure and design of the sofa will affect the comfort and service life of the sofa, which should be considered comprehensively.