What is the difference between high density and low density foam?
Foams with a high density will generally feel more firm, and can withstand more pressure. Conversely, low-density foams will feel softer, but cannot withstand excessive pressure or weight. When it comes to memory foam in particular, higher-density foams recover more slowly after pressure is applied to it.
What is low density Styrofoam?
Low-density foams tend to exhibit more compressive creep, meaning they become less thick over time, than higher-density foams. Electric materials often use low-density polyethylene foam because it does well in applications that call for dielectric strength and constancy.
What is PVC foam made of?
PVC foam is made up of PVC and Polyurea through an interpenetrating polymer network. Both substances are mixed, dispensed into a mold, sealed and heated. When it has expanded to its full density and cured, it is then ready to be cut for purchase.