Furniture foam rubber - what density is needed for a sofa?

Over time, as a result of use, upholstered furniture loses some of its characteristics, becoming not as comfortable as it was originally. Fossae or tubercles form on the couch. On such a couch it is no longer possible to have a good rest. This can happen due to the use of low-quality filler or due to improper use of upholstered furniture. If you wish, you can independently restore the furniture, just buy a new foam rubber and replace it in the sofa. You need to study furniture foam to understand which one to choose for the sofa.

Varieties of furniture foam

When choosing upholstered furniture for a home, it is very important to pay attention to its convenience. It will be useful to inquire which filler the manufacturer has chosen for the manufacture of a particular model. A wide variety of brands can confuse an inexperienced professional, not like an ordinary buyer. The selection criteria are density and thickness.

REFERENCE. To collect upholstered furniture, it is necessary to use a material with a density index of 30 kg per cubic meter. m. Such sofas can be used both for sleeping and for relaxing in a sitting position. During operation, the filler is not sagging.

IMPORTANT. The duration of furniture operation will depend on the foam density indicator. The dependence works - the higher the density - the longer the period of operation.

For the manufacture of furniture seats and armrests, a material with different characteristics is usually used, this is explained by a different degree of load.

Thickness is an equally important indicator. If we are talking about a sofa for sleeping, the thickness should be at least 4 cm. Often, furniture manufacturers neglect this criterion and use thin foam rubber, which significantly reduces the quality of furniture.

Quality indicators

When choosing foam rubber, it is necessary first of all to pay attention to its main parameters, this is thickness and density. The quality and scope of this material is influenced by such qualities:

1. The density of the filler. The higher this indicator, the longer the material will last.
2. Compression stress. Standard kPa should be 40% when compressed.
3. Fortress. This indicator is determined by the gap and elongation in the gap process.
4. Elasticity. This indicator is determined based on the height of the bounce at the time of testing.
5. Residual deformation. After the load is removed, the surface should take its original shape as quickly as possible. Here the dependence works - the higher the density index of the material, the less it lends itself to deformation.

REFERENCE. Manufacturers indicate in the name of foam rubber letters that allow you to quickly determine its class. The numbers indicated in the title will help determine the density, compression stress.

Assignment of brands of furniture foam

There is a certain classification of foam rubber, on its basis it is possible to determine what material is intended for what purposes. First of all, you should deal with the brand designation. Manufacturers use latin letters:

• ST is the most common material of the standard type.
• HL and EL - this material already belongs to the rigid type, the second option is increased rigidity.
• HS is a soft or ultra-soft material. Quite often used in sofas.
• HR is a designation of highly elastic material.
• LR - this material will be soft and viscous in structure.
• RTC is a reticulated polyurethane foam characterized by increased porosity.

The designation in Latin letters is only part of the encrypted characteristics. There are also numbers. The initial numbers indicate the density of the foam rubber, and the other two indicate the compression stress.

Already on the basis of the marking, you can understand what material is suitable for what purposes.

What foam rubber is used in sofas?

To complete the sofas, manufacturers use several varieties of foam, depending on what characteristics the furniture should have. We will understand the question - furniture foam rubber - what density is needed for a sofa?

For upholstered furniture, an indicator of 30–40 kg per cubic meter will be an excellent choice. m. If we are talking about children's upholstered furniture, it is better to give preference to a material with an indicator of 25 kg per cubic meter. m. Foam rubber 1620 is one of the mildest, but the indicator of durability leaves much to be desired. It is suitable for the manufacture of furniture or its elements, which do not have a high load.

Material brands 2336 and 2310 are most often used by manufacturers in the manufacture of teenage furniture, they are considered hardy. They are also very often chosen as a layer for springs.

REFERENCE. Most often, the brand 2536 is used in furniture production.

Modern production offers a very extensive selection of brands of filler, which makes it possible not only to furniture manufacturers, but also to ordinary customers to select the necessary positions of goods.