325 – Ethylene Vinyl Acetate (EVA, PEVA)

Temperature Range:

Low Temp:           -70°C (-94°F) Brittle -80°C (-112°F)

High Temp:          76°C (169°F) intermittent 101°C (214°F)

Properties

Ethylene-vinyl acetate (EVA), also known as poly(ethylene-vinyl acetate) (PEVA), is the copolymer of ethylene and vinyl acetate. The weight percent vinyl acetate usually varies from 10 to 40%, with the remainder being ethylene.

It is a polymer that approaches elastomeric ("rubber-like") materials in softness and flexibility. This is distinct from a thermoplastic, in that the material is cross-linking, ergo difficult to recycle. The material has good clarity and gloss, low-temperature toughness, stress-crack resistance, hot-melt adhesive waterproof properties, and resistance to UV radiation. EVA has a distinctive vinegar-like odour and is competitive with rubber and vinyl products in many electrical applications.

Applications

EVA/PEVA can be typically used in Suckers, Gum shields, Barrel Bungs, Ice Cube Trays, Carrier bag handles, and Flexible tubing.

Types of grade available

Injection moulding

Extrusion

VA – 2% up to 50%

Cross linked and expanded grades are available for cellular moulding applications

Full data sheets for all grades are available on request.

* The information above is supplied in good faith and believed to be correct. This information is supplied upon the condition that persons receiving this will make their own determination as to its suitability for their purposes prior to use. EMI makes no representations or warranties, either expressed or implied with respect to the information or the product to which this information refers.