DuPont Elvax® 360 EVA

Product Overview

Elvax® 360 is an ethylene-vinyl acetate (EVA) copolymer developed and produced by DuPont. The material consists of translucent to milky-white free-flowing pellets and is a heat-stabilized copolymer with medium vinyl acetate (VA) content and medium melt flow rate. Its core advantage lies in the combination of a 25.0 wt% vinyl acetate content and a 2.0 g/10min melt flow rate. This allows it to maintain excellent melt strength while retaining good flexibility. This grade is specifically designed for extrusion, injection molding, and industrial compounding processes, and is widely used in applications such as adhesives, wire and cable jacketing, and food-contact packaging.

Technical Data Sheet (TDS)

Physical Properties

Thermal Properties

The technical data sheet (TDS) of Elvax® 360 material from DuPont corporation, if there are differences, please refer to the official website of DuPont.

Features & Benefits

• Excellent Melt Strength: The medium melt flow rate (MI 2.0) provides the material with good melt viscosity and resistance to sag, maintaining a stable processing form during extrusion and coating processes.

• Broad Substrate Adhesion: The 25% VA content provides good polarity, demonstrating excellent bonding performance on PE, PP, and various polar substrates.

• Good Flexibility and Impact Resistance: Compared to standard polyethylene, this grade possesses superior low-temperature flexibility, impact resistance, and puncture resistance.

• Heat Stability and Oxidation Resistance: The formulation includes heat stabilizers and antioxidants, ensuring color stability and resistance to degradation in high-temperature processing environments.

• Food Contact Compliance: Meets the requirements of FDA 21 CFR 177.1350(a)(1), satisfying compliance needs for food-contact packaging materials.

Applications

• Hot Melt Adhesives and Sealants: Used as a base resin for hot melt adhesive formulations in bookbinding, packaging sealing, and automotive interior lamination.

• Wire and Cable Jacketing: Utilized for its good flexibility and environmental stress crack resistance as cable insulation or jacketing material.

• Industrial Compounding and Extrusion: Used for producing industrial sheets, boards, and base resins for composite materials.

• Food-Contact Packaging: Suitable for food packaging films, seal layers, and cap liners that require transparency and flexibility.

Frequently Asked Questions (FAQs)

Q1: Does Elvax® 360 require drying before processing?

A1: EVA materials are somewhat hygroscopic. To prevent silver streaks, bubbles, or surface defects during injection molding or extrusion, it is recommended to dry the material before processing. Typically, drying at 40-50°C for 2-4 hours is recommended, with parameters adjusted based on actual storage conditions.

Q2: What is the difference between Elvax® 360 and EVA grades with lower VA content?

A2: Compared to lower VA content EVA, Elvax® 360 (25% VA) has lower crystallinity. This means it is softer, more transparent, and has stronger adhesion to various substrates, though its Vicat softening point and rigidity are relatively lower.

Q3: Does this material meet halogen-free flame retardant requirements?

A3: Elvax® 360 is a naturally halogen-free copolymer and contains no chlorine, bromine, or other halogens. However, as a base resin, it does not possess high-level flame retardancy (e.g., V-0) on its own. If the end-use application has strict flame retardant standards, it typically requires blending with specific flame retardants.