EVA Dow DuPont 265
EVA Dow DuPont 265
Product Introduction EVA Dow DuPont 265 is an ethylene‑vinyl‑acetate copolymer resin with balanced performance in flexibility, low‑temperature resistance, environmental safety and processing adaptability.
Main Applications
Shoe‑materials & Foamed Products: Commonly used for midsoles of sports and casual shoes, foam slippers, sandals, as well as building materials such as sound‑insulating boards and gymnastics mats. Its foamed articles feature softness, high elasticity and chemical‑corrosion resistance.
Films and Sheets: Used for packaging films including food‑packaging films and heat‑shrinkable films, functional agricultural greenhouse films, and intermediate layers for polyolefin laminated films.
Hot‑melt Adhesives & Sealants: Suitable for hot‑melt adhesive production for book binding, furniture edge‑banding and electronic assembly. It is also used in adhesives, sealants and wax blends.
Wire and Cable: Suitable for wire sheaths with insulation and chemical‑corrosion‑resistant properties.
Injection‑molded Products: Applied to toys, consumer goods, sports equipment, automotive accessories such as shock absorbers, fenders, interior & exterior trim parts, and household‑appliance components.
Other Applications: Also includes medical‑device articles such as flexible catheters and medical films (relevant compliance standards shall be met), sealing container lids and industrial components.
Performance Parameters
| Performance Category | Test Item | Test Standard | Test Data | Unit |
|---|---|---|---|---|
| Basic Physical Properties | Vinyl Acetate (VA) Content | ‑ | 28 | wt% |
| Melt Flow Rate (MFR) | 190°C/2.16 kg | 3 | g/10min | |
| Density | ASTM D792, ISO 1183 | 0.951 | g/cm³ | |
| Mechanical Properties | Tensile Strength | ASTM D1708 | 29 | MPa |
| Elongation at Break | ASTM D1708 | 800‑1000 | % | |
| Tensile Modulus | ASTM D1708 | 28 | MPa | |
| Shore Hardness | ASTM D2240 | 83 | ‑ | |
| Thermal Properties | Melting Point (DSC) | ASTM D3418, ISO 3146 | 73 | ℃ |
| Vicat Softening Point | ASTM D1525, ISO 306 | 49 | ℃ | |
| Ring‑and‑Ball Softening Point | ASTM E28 | 171 | ℃ |
Applicable Processes
‑Injection Molding: For toys, automotive parts and household‑appliance components. ‑Extrusion Molding: Commonly used for films, sheets and wire‑cable sheaths. ‑Blow Molding: For hollow articles. ‑Foaming Molding: For foamed products such as shoe materials and padding materials. ‑Hot‑melt Processing: Suitable for preparation of adhesives and sealants. ‑Compression Molding, Structural Foam Molding and other processes.
Processing Characteristics
Drying: If the material absorbs moisture, drying at 65℃ is recommended before processing to avoid bubbles or silver streaks in finished parts.
Processing Temperature: It is critical for EVA processing. Melt temperature is generally recommended not to exceed 230°C. EVA resin has low thermal‑decomposition temperature (approx.230‑250℃). Excessively high temperature will easily cause material degradation. Typical processing temperature range for injection or extrusion is 160‑200℃, which shall be adjusted according to equipment and products.
Mold Temperature: Relatively low mold temperature such as 20‑45℃ is recommended.
Equipment Selection: Conventional thermoplastic‑processing equipment can be adopted, including ordinary extruders designed for polyethylene processing.
Cooling: Products normally require rapid cooling for setting.
Processing Tips: Adopt process conditions of “low temperature, medium pressure and medium speed”. Products tend to stick to the front half of mold. A snap‑type cold‑slug well for sprue is suggested in mold design.
Note: All data above is for reference only.
