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How to distinguish the pros and cons of high-density sponge
Release time:
2020-12-30 14:50
The relative density of the compressed sponge is not certain. High density sponge is sponge with a net weight of 45KG per cubic sponge. Less than the net weight of each cubic sponge to achieve 45KG above the sponge is called medium density low sponge.
② The compressed sponge is soft (low relative density) and it is not easy to rebound after sitting for a long time. The sponge is hard (high relative density) and does not look good after deformation, and the sitting feeling is not very good. Therefore, the sponge is not the better the relative density, but the higher the relative density, the more expensive it is. Good sofa cushion should have both, should be both of them, with different relative density of sponge divided into two layers, relative density of 27-40 is enough, don't pursue perfect relative density.
③The difference between several levels of sponge: resilience rate, reduce the permanent deformation rate, physical performance regulations.
Resilience rate: mainly depends on the relative density, the higher the more easy to rebound.
Reduce the permanent deformation rate: Grade A is less than 5%, Grade B is less than 7%, and Grade C is 10%
Physical performance regulation: it is to be able to sit for several times. grade a: 60,000 times, grade B: 40000 times, grade c: 20000 times
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