Sofa sponge density is the best?
Test procedure:1. place the sponge and sand together and then measure the total mass of the sponge and sand with a balance, which is recorded as M.2. take away the sponge, and then weigh the quality of the sand, remember it as m sand3. calculate the quality of the sponge, that is, m cotton, =M-m sand4. this cup of water poured into the cylinder, then the amount of water volume V0.5. the sponge into the cylinder, when the liquid level measuring water does not change the amount of water in the cylinder volume, denoted as V1.6. calculate the volume of sponge, that is V cotton =V0-V17. calculate the density of sponge by formula:
Density test methodTest instrument: a sponge, a cup of water, a balance of sandObjective: to determine the density of spongeThe formula: P =m/V
Furniture sponge: fabric sofa, high foam foam spongeThe cushion density is more than 30kg/ cubic metersThe back pad density is more than 25kg/ cubic metersUnder normal circumstances, the human body after sitting, sofa cushion to sag, about 10 cm for the bestThe rebound rate is above 60%In order to improve the sitting comfort, the bubble did not reduce the density of the premise in ensuring, do soft processing. Some vertical springs are arranged in the cushion, so that the sofa has higher resilience and anti-aging property.
