How do you identify the quality of the interior of a sofa?

There are three main types of padding for sofas:

Flexible polyurethane foam (commonly known as sponge):

There are three main types of sponges used for sofa filling: conventional sponge is a kind of sponge generated by conventional polyether and TDI as the main body. It is characterized by good resilience, softness and air permeability; High resilience sponge is a kind of sponge generated by active polyphosphorus and TDI, which is characterized by excellent mechanical properties and good elasticity.

Large compressive load, good flame resistance and air permeability; The spongy sponge is a kind of sponge that is similar to natural seaweed of different sizes in the inner hole, which is characterized by good elasticity and excellent cushioning during compression and rebound.

Down filling:

Down is used as a sofa filler, which is comfortable to sit and small deformation for long-term use, but the disadvantage is that the rebound is slow and the cost is high. It is generally used in combination with sponge in high-end sofas, or suitable as cushions.

Artificial foam padding:

Artificial cotton is used as sofa filling, which is very soft and comfortable to sit on, but has poor mechanical properties and small compression load, so it should only be used as a cushion. The choice of the filling of the sofa: depending on the type of filling, there is a big difference in use.

Under normal circumstances, the cushion filling of the fabric sofa should be more suitable for the use of more than 30 kilograms of high-resilience sponge, and most of the whole sponge is used in the form of filling the whole sponge, and the best form is to use more than 30 kilograms of high-resilience sponge and messy sponge combined with down or rayon to increase comfort and service life. When choosing, ask about the type of filler, if the filling is a sponge, understand the density of the sponge used, feel the rebound effect of the cushion with gravity, and feel the comfort of sitting when you sit on it.

Generally, the cushion with sponge, the national standard is 25KG M3, and the international standard is 35KG M3. The bottom structure, the high-elastic snake spring structure is better than the bandage structure, and the high-quality bandage is better than the inferior bandage structure, and it can still rebound quickly after a long time of compression, return to its original state, and do not deform or collapse.

When the general buyer buys the sofa, it is difficult to judge the quality of the sofa if he only sits and presses it. The only way is to take a look inside, for some sofas that are not fully covered in the lower part, you can turn over and observe the quality of the fillers such as springs, plates and sponges used inside to judge the quality of the sofa.