Density vs Shore Hardness?

Shown in characteristics, as standard, is the density of secondary foaming porolon (140-220 kg/m3). The maximum value for PE Foam can reach 100 kg/m3, which density is categorically forbidden for manufacture of judo mats. This is a very hard material, injurious for sportsmen.

The density from 160 to 180 kg/m3 corresponds to the PE Foam density equal to 25kg/m3. The mats of such density are well suited for manufacture of judo mats. In professional judo mats we use PE Foam with density of 33kg/m3 (180-200m3) or 50 kg/m3 (200-220 kg/m3).

Also, rather often, the customers who order materials for tatami and wrestling and budo mats, request selecting a good based on the Shore harness scale.

Ratio between hardness and density:

• 35 Shore = 90 kg/m3 (0.09 g/cm3)
• 45 Shore = 120 kg/m3 (0.12 g/cm3)
• 55 Shore = 150 kg/m3 (0.15 g/cm3)
• 70 Shore = 220 kg/m3 (0.22 g/cm3)

We hope that this little aid will help you choose the good you need.