Foam
Most applications can be accommodated using either extruded polyethylene (etha) foam or one of the varieties of polyurethane foam (ester or ether foam).
Polyethylene Foam (etha)
The majority of our cases are designed with etha foam interiors. Etha foam is produced specifically as a packaging material and is available in a wide range of densities (from 1 lb. to 9 lb.). This allows us to tailor interiors to specific product weights and/or densities.
Lightweight electronic equipment can be safely packaged using 2 lb. etha foam while heavier articles may require the use of 4, 6 or even 9 lb. foam. Etha foam provides excellent shock and vibration isolation, resists compressive creep, and machines easily.
Polyurethane foams
Polyester (ester) and polyether (ether) are other foams that are commonly used for packaging. Polyurethane foams are less dense (softer) and are suitable to gently contain fragile equipment. It is often used in conjunction with etha foam in cushion design. Of the two polyurethane foams, we recommend ester foam over ether in our case designs. Ester is much more resilient and offers better long term performance than ether foam.