Published at Saturday, 17 March 2018. Sofa Design. By kruzz.
Inspect foam sponge For modern sofas, the high-end seat cushion has a density of 30 kg per cubic meter with high-elastic foam and sponge. For the back side, cushion should be more than 25 kg per cubic meter in density with high elastic foam. To make a better feel and comfort, sofa makers make the cushions more soft or more stiff depending on the customer needs and preferences. Sometimes, metal springs are used for a higher elasticity and anti-aging purpose. As rules of thumb, when you sit on a sofa cushion, it should not sink or sag for more than 10 cm.
When buying fabric sofas, make sure the covers for the sofa seat and the back should be detachable so that you can change to clean them up. Sofa fabric should be relatively thick. A high quality fabric must be able to endure 12,000 times of mechanic friction and typically weighs 300 gram per square meter. Some upscale sofa fabric is processed to be anti-static, dirt-proof, flame resistant. You also need to check if the sewing is fine, straight and smooth.
These might sound like obvious questions, but not all sofa beds work the same way. Some pull out straight from the back forwards, while others are converted from the side. It is essential to know this, because it can affect how the sofa is placed in your room. They generally extend in one direction or another, and it is important that you understand how yours works so you can allow the necessary free space in your sitting room.
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