After the repair, people often buy furniture. The choice of a specific model in the future should provide comfort to the owners. In addition to strength characteristics and design, an important role is played by the sofa filler. The modern market has many models, so in the first place you need to decide on the purpose of buying the product. If the sofa is purchased for sleep, then the filler is chosen more rigid, for other cases, simpler options are considered.
What is pfu filler on the couch
PPU material surpasses rubber and rubber in its characteristics. High density allows you to get high-quality products from polyurethane foam. For furniture, polyurethane foam with an indicator of at least 30 km / m3 is used. Materials with a lower value are used only for the manufacture of pillows.
This "filling" is characterized by the absence of wire blocks. The entire place inside is occupied by polyurethane foam (abbreviated as PPU). The material is a subspecies of foam rubber. Performing some models, they use contour cutting, which provides an attractive design along with comfort.
PUFs are obtained by artificial gas filling of polyurethanes.
Advantages of PPU filler:
- the composition does not include allergens, which in the future become a medium for the propagation of microorganisms;
- make material from environmentally friendly substances;
- passes air;
- quickly restores shape after deformation;
- availability;
- used in various furniture products.
Disadvantages of PPU filler: - poor resistance to sunlight;
- flammable;
- highly elastic;
- poorly withstands heavy loads.
Furniture with PU foam filling is practical and has a long service life.
Important! Often problems with the spine and restless sleep are associated with the place where the person is sleeping. That is why it is important to choose the right furniture.
Varieties of PPU
Depending on the feedstock, PPUs have the following classification:
- Hard. It is used for thermal insulation, sound insulation, in construction.
- Elastic. Household filters, sponges, and cushioning products are made from it.
- Self-foaming. Included in the foam, adhesive joints. With the help of such materials fill the voids, conduct insulation.
By the type of filling the sofa PPU are divided into two types:
- Blocky. This form is produced by the supplier in the form of a large block. In furniture factories, it is cut into layers of the required size. The result is a part of the sofa made of sheets of various densities.
Cast PPU. Produced by pouring hot liquid into prepared forms. - During the chemical reaction, the filler under pressure takes a given shape. The result is blocks of the indicated sizes. The advantage of such production in the absence of waste after processing.
Polyurethane foam sheet. It is a thin sheet that covers the blocks during the production process and provides softness to the seat. Used to process sofas before upholstery. - Baby PPU. During the production of blocks and sheets, crumb is a waste. This type is used for stuffing decorative pillows.
Attention! The cast type is more expensive due to the long production process.
A number of soft packings are distinguished, which are used together with others to give the furniture softness or rigidity, as well as to improve other characteristics. Often they can be found in the filling of the armrests and backs, as well as stuffing decorative pillows.
Types of soft fillers:
- Synthetic winterizer. Straight fibers are emitted into the structure, very light.
- Hollofiber. As a result of processing with silicone, elastic balls are obtained, which have the advantage of quickly restoring shape.
- Sintepuh. It is widely used to replace natural fluff. Lightweight and voluminous material, resistant to deformation.
How to choose ppu on the couch
Not all materials are of good quality. The entire complex of necessary properties contains only polyurethane foams that have passed all stages of processing.
Before buying sofas, you should ask about the density of the filler, the optimal value is from 30 kg / m3 for seating, and 25 kg / m3 for the back. The higher the density, the better the quality and service life.
Another important characteristic is the thickness of the foam. The minimum value is from 4 cm. Some manufacturers use a thickness of about 3 cm in order to save. It is advisable to avoid such furniture, especially if it is purchased for active use and sleep.
The most suitable pillow fillers:
- holofiber;
- synthetic winterizer;
- sintepuh.
Due to their advantages, pillows will have special comfortable and soft characteristics.
Sofas for sleeping are optimal with hard and dense fillings. In this case, the most suitable orthopedic conditions are observed.
Important! Sofas for living rooms are chosen with high-density polyurethane foam. Suitable as additional filling: holofiber or sintepuh.
Very often, when choosing furniture, a person prefers only the appearance, cost and quality of the top layer. During operation, these parameters go by the wayside, because the main thing is comfort for the human body and long-term use. When buying a sofa, you should test it yourself to make sure the density of the filler. The acquisition should be treated carefully, because on the couch a person will spend a lot of time.
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