Polyethylene & EVA Foams
Polyethylene and EVA foams are a range of closed cell, chemically cross linked (and non-cross linked) foams made from polyethylene or ethyl vinyl acetate copolymers. They are made in block (bun) form or extruded. They are made in a range of densities and molecular weights.
PE and EVA foams are buoyant, waterproof, lightweight, shock absorbing and have excellent thermal insulation properties. They are resistant to most common chemicals. They have good compression and deflection characteristics and, with heat, can be thermo formed to shape.
PE and EVA foams are used for a wide range of applications including:
Sticky Back Tapes
Toys and Games
. Not absorb water
. Resist petrol, oils & most chemicals
. Provide excellent buoyancy
. Absorb shock
. Insulate against heat & cold
. Thermo - mould to shape
To calculate the R value of EVA or PE, just divide the thickness by the thermal conductivity value. The value for this product is .033 degrees per wmk. ( i.e. 50mm = 50 divide by .033 =1515.1515. Then move the decimal point to the left three spaces. = 1.515 R Value)