Inner Values


How do you recognize a really good sofa? At first glance, this is hardly possible, because every piece of upholstered furniture is full of little secrets. Only those who know them can decide on the right sofa. In addition to the aesthetic aspects and the workmanship, it is of course a question of “inner values”. You have to pay attention to the hardness of the upholstery and the correct individual seat proportions. In short: you have to "sit down" on quality.


In any case, you should extensively try out the seats and seek advice from specialist retailers. This is the only way to find out whether a sofa is comfortable. Bring your time and try out every imaginable sitting and lying position on the piece of furniture of your choice.


Upholstery is a craft and handicraft. Very soft materials are also processed, which is why dimensional tolerances cannot be avoided and all specified dimensions are approximate. We reserve the right to make changes at any time for the purpose of updating and improving the model, as well as correcting erroneous information.


The seating comfort is largely determined by the upholstery. And it can be very different. Depending on the character of the model, the upholstery is either soft, casual or tight.

In principle: the softer the upholstery, the more it will sink into the sofa. On the other hand, getting up and sitting down is easier with firm upholstery. The sinking in is less pronounced; the optics accurate. The wrinkling of the cover is correspondingly different. Casual upholstery goes hand in hand with a natural wave formation on the seat, back and armrests: The casual character is also supported by a cozy, comfortable look. The size of the sewn cover parts and the width of the elements also have a similar influence on the sinking and stretching of the cover. In summary, the following applies: With more casual, softer upholstery and large seat widths, more sinking in and greater stretching of the cover. With tighter, firmer upholstery and smaller seat widths, less sinking in and less stretching of the cover.


Upholstery structure in which structural measures (pre-tensioned upholstery) largely avoid the formation of waves in the covers. The cover is stretched tightly over the upholstery. Construction or model-related trains, e.g. B. on curves, ruffles are design and construction-related.


A casual upholstery is characterized by a soft upholstery structure. The cover is not smooth. The wave formation of the covers on the seat, back and armrests is intentional and typical of the goods, as well as seat impressions and chamber markings, as a sign of high quality workmanship.


A particularly casual upholstery characterizes a very comfortable and soft surface. This is z. B. achieved by inlets with various fillings (e.g. fibers, beads, down, feathers or the like). In the upholstery structure, a foam core or foam cushion usually represents the basic upholstery. Even when new or after first use, the covers can show a clearly visible wave pattern on the seat, back and armrests, which is unavoidable due to design, construction and material and is reinforced depending on use will. The size of the sewn covers also has a similar influence on sinking and cover elongation. The softer the upholstery and the larger the seat, the greater the sinking in and ultimately the stretching of the cover.


A super soft upholstery is characterized by a super soft, soft surface. Even when new, the covers deliberately show a pronounced wave pattern and increased creasing on the seat, back and armrests. Seat impressions are typical of the goods. With this super soft seating comfort, the formation of wrinkles is desired and specially incorporated.


In the case of upholstery with permanently elastic foams, the upholstery consists of a high-quality foam block that is manufactured to match the model. The foam quality is generally defined by the so-called "volume weight", which is listed in the respective product information. The upholstery is fine-tuned in all seating areas. In this way, the volume weights of the seat edge, lumbar area, shoulder segment or armrest, for example, change in order to meet the different loads and demands.

With the upholstery with a tested quality spring core, the springs sit close to each other and are connected by spirals. Various foams and upholstery mats are placed on top of this in order to achieve evenly flat seating comfort.

In addition to the main upholstery, there is fine upholstery. The fine upholstery is the final layer before the cover is upholstered. Here, too, different diolen layers are processed so that the cover clings perfectly to the model design.


The frame (also called "frame") is made of sturdy beech wood or with a metal frame. Only torsion-free materials are used here, so that the highest possible stability is guaranteed. The spring base, as well as the entire upholstery structure, depends on the respective model design. As a rule, a distinction is made between two types: the spring base with nosag springs and the spring base with belts.


The question is often asked in everyday sales: does this also exist in ...? Does that also exist with ...? Does that also exist as ...? Often this refers to the shortening or lengthening of elements, different feet, different seating comfort.
Basically at KOINOR, every request for a custom-made product is individually checked for feasibility with our technology. For each individual case, there is then an acceptance or, unfortunately, a rejection every now and then


In many add-on programs there are elements such as round corners, loungers or add-on corners with integrated stools. Due to their shape, these types sometimes have a different spring base than, for example, the matching two-seater. Either the type of spring base as such or its design varies with regard to density and orientation. Each special shape requires a different upholstery structure. Of course, this also creates a different level of seating comfort or a different level of seating strength. For some single stools, upholstery with a spring core is not possible due to the design. These construction-related differences in seating comfort are no reason for complaint.