Foam for sofa

How to choose foam rubber for a sofa depends on your intentions. If your furniture will be used as a permanent place to sleep, you need to choose a more rigid filler. After all, for medical reasons, the bed can not be too soft. If you most often sit on this furniture, and you have to sleep only occasionally (for example, overgrown guests), then how tough the foam rubber will be is not particularly important.

The best sofa - the one where the foam rubber was used soft and elastic, allowing you to relax and give the spine a chance to relax from the loads. This effect is achieved with the help of a special structure - “puff pie”.This is when the upper part - a thin foam with low density and stiffness, and under it - a more elastic material. This sofa resembles a tire, which is pumped in moderation - there is no lethargy, but there is elasticity and elasticity, which at the same time do not turn into stiffness. However, the furniture "stuffing" can be attributed not only foam and blocks of springs. They also use synthetic fibers, most often synthetic padding. As a rule, foam rubber is covered with synthetic foam, while achieving additional softness and relief. At the same time it serves as insulation for the main filler. "Stuffing" for a sofa of expensive brands consists of highly elastic foam rubber and latex of natural origin.

There is an opinion that nothing can be better than spring sofas, which otherwise cannot achieve an orthopedic effect. However, customer feedback suggests that often these same springs are so poor quality (sometimes it is the wrong quenching that is to blame) that they fail in a short time. Several layers of a felt blanket are put on top, as well as other materials, so that the spring mattress is really high-quality.This pleasure is not cheap, so we can assume that it is better to use high-quality foam rubber than cheap springs.

If you get a good upholstered furniture, it soon becomes an inseparable element in the interior of the room. And then I really do not want to part with such a product. If, while choosing the most suitable sofa, you made a mistake, did not see shortcomings, then they will also appear very soon and will regularly spoil not only rest, but also mood.

It depends only on the filler how comfortable and cozy the upholstered furniture is, when there is a sitting effect, what the service life of the new sofa will be. Sofas, as a rule, have a "filling" in the form of a complex system, which includes soft components and the base of the springs.How much a sofa will cost, it will be clear from what a person cannot see when buying - it is inside.

If these are average prices, then the “filling” consists mainly of synthetics. For a soft and elastic sofa are needed:

• elastic polyurethane foam;
• non-woven high-volume components;
• block with springs;
• natural latex;
• down from synthetics.

When a person chooses a sofa, he evaluates it both by density and by the hardness of the seat. They are characterized differently:

1. By density is meant the weight of one cubic meter of material when it is in uncompressed form. With an increase in the density of the material, its wear resistance characteristics also increase, which means that the furniture will last much longer.
2. By stiffness is meant by what the reaction to the load is different material. It depends on how comfortable a person will be.

There is no difference. PPU (polyurethane foam) is just an abbreviation, whereas foam is a trade name.He was assigned to the first commercial polyurethane foam.

It is known to us as foam rubber, which is a soft polyurethane foam, in which 90% is air. The higher the elasticity of the foam, the higher its strength. A very soft material will quickly crumble and fail. If even a simple sofa cushion is stuffed with foam rubber crumbs, it will lose its shape in a very short time, and therefore only a solid foam piece can be used to make the sofa. And these are not thin pieces of foam rubber, they cannot be less than 15 centimeters in thickness.

These are ready-made details of the sofa. They easily come to their original shape as soon as the load is removed. This type of polyurethane foam is considered the best in elasticity; it is more reliable than block foam. Sitting on the couch with such a “filling” will be very comfortable, because it completely repeats the shape of your body, and it is easier to rise from it than from other sofas. He seems to be pushing you a little.

The cost of foam rubber always depends on how dense it is. Lowest density means lowest cost. If the sofa is made by unscrupulous furniture makers, then they use more rigidity to increase the price of the sofa with low-density foam rubber. Such an approach misleads the buyer - with the rather dense and elastic appearance of the furniture. But several months have passed, and you notice that the foam has gone astray, and then completely became some kind of shapeless mass.

Need to understand some simple rules for choosing foam rubber:

• The standard minimum density of foam rubber for furniture parts that are used in the seats is 30-35 and more kg per cubic meter.
• For a back this value should not be less than 23-25.
• In the manufacture of armrests can be used a density of at least 20-22 kg / cu. m

Of all the options, the most interesting is foam rubber having a “shape memory”. It possesses unique physicomechanical properties, namely, it is slowly restored after unloading. At first, such foam rubber exactly repeats the shape of the body lowered onto it, and when the load is removed, it slowly begins to return to its original position. For the sofa, this option will be the best choice - to rest was truly comfortable.

This material is obtained by foaming rubber. It turns out the material of natural origin, resembling foam. It also takes the form of a body, making your rest comfortable. In addition, it also has antibacterial properties.

This is an artificial material with a high degree of elasticity. It is much cheaper than natural latex. This material has a special cell structure. If foam is usually cells that are the same in size and with walls of the same thickness (which are both deformed in the same way and resist compression), then HR is a completely different structure. These are cells that are different in size and heterogeneous in structure.And they are scattered in a chaotic manner, and the reaction to the load they have is ambiguous.

With a small load, only small cells with a small wall thickness work. This is how super-soft foam works. If the load is significant, the cells work larger, with greater resistance to compression. This technique makes it possible to feel the full comfort, which is usually not so easy to achieve.

As a rule, a thinner non-woven material is applied to the foam layer. So called synthetic fibers, laid in a special way. Thanks to such interlayers, combined with the elasticity of foam rubber, the effect of sinking is achieved. This has always been considered a sign of good quality furniture. It turns out that first the spring effect comes from the holofiber, then from the foam, and then from the springs.

The material is made of interwoven polyester fibers that resemble small springs. They are treated with a special compound to reduce friction. It also helps avoid stalling. For the same purpose, such elements are placed in an additional inner case, which, if necessary, is detachable.

Refers to warm and durable materials.In the manufacture of sofas is used as a gasket, which is placed between the foam rubber and upholstery.

These are hollow polyester fibers that are twisted like springs. By structure, this material resembles a synthetic winterizer. The hollowness of the fiber in this case causes less caking, which means that the form remains fluffy. The operation is longer, which many consumers appreciate.

How to replace foam rubber in the sofa with your own hands, see the next video.