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
| EMI Reference | Specification | Shore | SG | Tensile Strength (MPa) | Elongation at Break % | Colour |
|---|---|---|---|---|---|---|
| 325 – EVA731 | Good Commercial | 73° | 0.96 | 14 | 950 | |
| 325 – EVA801 | Good Commercial | 80° | 0.95 | 9.3 | 800 | |
| 325 – EVA851 | Good Commercial | 85° | 0.95 | 15 | 750 | |
| 325 – EVA901 | Good Commercial | 90° | 0.94 | 18 | 700 | |
| 325 – EVA951 | Good Commercial | 95° | 0.93 | 15 | 600 | |
| 325 – EVA981 | Good Commercial | 98° | 0.93 | 19 | 650 |
