Often, consumers are faced with the question of which sofa is better - spring or polyurethane foam? The modern market offers a wide range of upholstered furniture designs, which differ in upholstery, transformation mechanism, additional equipment and dimensions. One of the main indicators of product quality is the internal filler. Consider the most popular of them.
Spring models
Indicated modifications are divided into several subtypes. The general similarity lies in the fact that the block is an efficient structure of interconnected spring elements arranged vertically. To understand which sofa is better - spring or polyurethane foam, consider the characteristics of all versions in order. Let's start with the Bonnel modification.
This system is a robust design with steel springs in a biaxial configuration with four or five coils. The elements are connected to each other by means of brackets or spiralwire. The required rigidity is achieved through a solid fastening of a single block.
Benefits:
- practical and weight-bearing over 100 kilograms due to high resistance;
- optimal combination of price/quality parameters;
- filler turns do not touch, do not creak or deform, ensuring the reliability of the product;
- long working life with preservation of all characteristics.
Disadvantages include susceptibility to deformations, especially under point loads, weak orthopedic effect, difficulties with repairs and obsolescence, compared to modern counterparts.
Pocket Spring System
Continuing to study which sofa is better - spring or polyurethane foam, consider the Pocket Spring design. It consists of independent cylindrical springs. The elements are made of special hardened wire, disguised in textile covers sewn together.
Among the benefits are the following points:
- elasticity provided by flexible elements, which makes it possible to ensure maximum orthopedic effect;
- ease of use, no wiggle, which guarantees good rest and he althy sleep;
- sanitary and hygienic indicators, moisture and air circulation;
- long service life.
The disadvantages of the owners include the high cost of the product, due to the complex assembly technology, as well assensitivity of the system to directional mechanical action.
Which sofa is better - spring or polyurethane foam?
Owner reviews indicate that spring models are chosen by active, practical consumers who appreciate the versatility, functionality and reliability of upholstered furniture. When choosing, experts advise paying attention to the relevant certificates that guarantee high quality standards and hygiene standards. The possibility of subsidence and deformation of the sofa, including the duration of the working life, depends on the degree of the indicator of the spring filler.
Modifications with polyurethane foam
Polyurethane foam (PPU) is a porous composition obtained from synthetic polymer substances through a chemical reaction. The most famous analogue of this material is foam rubber. On the modern market, there are several types of PPU, differing in parameters. Density and elasticity are considered the main indicators of the quality of this substance.
When choosing a spring or polyurethane foam sofa in the second case, you should focus on the density parameter of 30–40 kilograms per cubic meter. Material with a lower index wears out faster. Most popular PU foam brands:
- type CT-2236 is designed for moderate surface load (not more than 60 kilograms), has a limited service life;
- ST-2536 brand creates a relatively rigid platform, can withstand loads up to 100 kg;
- CT-3540 variety is durable, comfortable, withstandsmaximum loads.
PPU features
The density of polyurethane foam in a sofa with a spring block is characterized by two categories:
- Cast format. It uses special forms filled with a specific liquid composition. It is possible to manufacture parts of any configuration, which makes it possible to form furniture of an original and unusual design.
- Block modification. The material under consideration is cut from large layers of blanks into strips of the required thickness and dimensions. After that, the layers are glued on top of each other until the required dimensions are obtained.
The advantages of PPU include:
- affordable cost, affordable for the general consumer segments of the population;
- excellent technical and operational parameters with high elasticity;
- long service life;
- practical, hypoallergenic, moisture resistant;
- versatility of performance due to the possibility of forming various geometric shapes and sizes.
User feedback about PSP
Opinions about which sofa is better - spring or polyurethane foam, are very ambiguous. Some users prefer options with metal coils, focusing on the reliability of these structures. Other buyers prefer PPU as an adequate modern equivalent. In any case, when choosing such a product, it is necessary to focus on the quality of the main components and the availability of certification of the usedmaterials.
The advantages of a sofa with PPU are indicated above. Among the shortcomings, the owners point to the flammability of the material, which, when ignited, releases harmful substances into the air. In addition, consumers do not always get the quality they expected. When choosing a spring or polyurethane foam sofa block, experts advise paying attention to the expensive version of polyurethane foam with intelligent memory. Such material has the ability to smoothly take the contours of the body of the owner of the furniture, adapting as much as possible to the features of the body. In addition to foam rubber, the composition includes latex, special crumb, synthetic winterizer or holofiber.
Selection criteria
When choosing upholstered furniture, regardless of its content, pay attention to the functional value of the product. Many users are wondering: which sofa is better (spring or polyurethane foam) for daily sleep? Both one and other modifications can be used for the specified purpose. As customer reviews show, the best option would be a bed that combines both components. Such models are especially convenient for everyday use.
When buying a product, do not forget to test it tactilely: feel the upholstery, sit, jump a little. In addition, ask sellers for relevant documentation and quality certificates, as well as a detailed description of the materials used. Each of these types has its own advantages and disadvantages, while high-quality sofas with any filling cannot be cheap.
Finally
Buying furniture with polyurethane foam, spring or combined filler on the modern market will not be a problem. You will find suitable options in specialized furniture stores or on the websites of manufacturers and official dealers. A wide range of sofas, differing in design, equipment and price, allows you to choose a modification for any room, taking into account financial possibilities.
