The density and compression hardness describe the technical quality of a foam.
The compression hardness describes the compressive behaviour of foams at a defined force.
The higher this value, the harder the foam feels.
An important quality feature of a foam is its density or volume weight (m3 kilograms per cubic meter).
As a rule of thumb:
-20 - 30 kg/m3 => quality for seat and backrest cushions, low-priced mattresses,
-30 - 40 kg/cbm => standard to high quality for seat and backrest cushions, mattresses, boats, camping or garden cushions etc.,
-40 - 50 kg/cbm => high to very high and very good permanently elastic quality for a wide range of all applications.
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