We engaged in supplying Ethylene Vinyl Acetate
| Density | 0.92 – 0.94 g/cm^3 |
| Gamma radiation resistance | Fair |
| UV light resistance | Poor |
| Max continuous Service temperature | 45 – 70 C |
| Min continuous Service temperature | 60 C |
| Sterilization insulation (Repeated) | Poor |
These resins are not hygroscopic and may be used as received without need for drying.
At temperature above 220 C, EVA resins can evolve toxic fumes.
Injection molding :-
Experience has shown screws normally used for injection molding of low density polyethylene to be satisfactory.
Melt temperature : 150 – 200 C
Mold temperature : 15 – 40 C
Extrusion :-
A three- zone screw with a total L/D ratio of at lease 20 is recommended.
Melt temperature is, generally, in the overall range of 95 – 205 C.
The melt temperature depends upon the melt index of the resin, the % vinyl acetate and the part configuration
Strengths
- Highly flexible, even at low temperature (-25 C)
- Highly compatible with a lot elastomers, TP and other materials (SBr, EPDM, TDE, PE, PVC, asphaltum…..)
- Better tear resistance than LDPE
- Excellent resistance to environmental stress cracking FDA compliant
- Good UV and ozone resistance
Limitations
- Poor heat resistance
- Reduced barrier properties compared to LDPE.
- Attacked by polar solvents, hydrocarbons, oxidants and strong acids
- Reduced creep resistance, compared to LDPE
Applications- Key performaces
Packaging
Stretch film for shrink wrapping . High flexibility
. Good tear resistance
. FDA compliant sealable layer in multiplayer food packging
. Good sealability
. Flexiblilty
. FDA compliant
Personal safety / Protection equipment
Flexible gloves . High flexibility
. Good resistnace to rupture
. Good chemical resistance
Automotive
Sound proofing . Good sound absorption
. Good adhesion with many substrates
Footwear
Soles (EVA foam) . Good impact absorption
. Good adhesion with many substrates
Wiring & Cables
Wire coating . Good adhesion with many substrates
. Highly flexible
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