Applications of Celanese Ateva 2019A EVA in Industrial Manufacturing

Celanese Ateva 2019A EVA, an ethylene-vinyl acetate copolymer, demonstrates consistent performance in various industrial applications requiring elasticity, transparency, and processability. We manufacture this raw material specifically for markets with stringent technical and regulatory demands. Below, we detail verified downstream sectors using our product at scale, with exact integration points, regulatory considerations, and end-use product landscapes.

1. Solar Photovoltaic Encapsulant Films

Major module manufacturers rely on this grade of EVA for encapsulation layers, facilitating electrical insulation, UV stability, and moisture resistance inside laminated solar panels. The polymer is extruded into sheets that cushion and protect sensitive silicon wafers or thin-film cells during lamination and field deployment. This application demands strict adherence to international electrical and environmental reliability standards across module lifecycles.

Industry compliance standards

• IEC 61215: Crystalline silicon terrestrial PV modules – Design qualification and type approval
• IEC 61730: PV module safety qualification
• UL 1703/UL 61730: Standard for Flat-Plate Photovoltaic Modules and Panels
• RoHS Directive (2011/65/EU)

Typical usage ratio

• Encapsulant sheets formulated with 60–70% EVA content by weight, adjusted for desired melt index and crosslinking rates during lamination. The precise proportion is modified based on module type and UV additive loading.

Downstream process integration

• Sheet extrusion using chill roll or calendaring lines
• Lamination at 145–155°C under vacuum in multilayer stack with silicon PV cells and glass backsheet
• Cross-linking with organic peroxide initiators during lamination to ensure structural bonding and long-term chemical stability

Final product types

• Crystalline silicon solar modules
• Thin film photovoltaic panels
• Bifacial and flexible solar panels for rooftop or utility-scale installations

2. Hot-Melt Adhesive Formulations

This EVA copolymer serves as the structural backbone of industrial hot melt adhesives, optimizing viscosity and thermal behavior for high-speed packaging, bookbinding, and woodworking processes. Formulators use it for controlled tack, open time, and flexibility. The resin enters blending with tackifiers, waxes, and application-specific modifiers to create adhesives meeting international standards for safety, migration, and bonding strength.

Industry compliance standards

• FDA 21 CFR 175.105: Adhesives used in food packaging
• REACH Regulation (EC 1907/2006)
• BS EN 923: Adhesives – Terms and definitions
• ISO 9001:2015 Quality Management Systems (for downstream QC and traceability)

Typical usage ratio

• Formulations use 25–45% EVA content by weight, adjusted based on required bond strength, open time, and application method (slot, spray, bead). Higher ratios increase flexibility and impact resistance.

Downstream process integration

• Batch blending with hydrocarbon tackifiers and microcrystalline wax in planetary or Z-blade mixers
• Extrusion or pelletizing for granulated or block adhesive formats
• Packaging in pillow or cartridge units for automated dispensing lines

Final product types

• Packaging case and carton closure adhesives
• Bookbinding glues
• Woodworking edge-banding adhesives
• Disposable hygiene (diaper core) hot melts

3. Flexible Food Packaging Films

Converters select this EVA copolymer for producing multilayer flexible films tasked with sealing performance, low-temperature flexibility, and controlled oxygen permeability. The resin functions as a sealing or tie layer, coextruded with polyolefins or barrier resins. Use in food contact structures requires validated formulation and strict compliance with migration and purity regulations to safeguard consumer health and packaging functionality.

Industry compliance standards

• FDA 21 CFR 177.1350: Ethylene-vinyl acetate copolymers for food contact use
• EU 10/2011: Plastics Regulation for FCM
• GB 4806.7-2016: Chinese National Standard for Food Contact Materials
• BRCGS Packaging Materials Issue 6 (GFSI recognized standard)

Typical usage ratio

• Layer structures typically employ 5–18% EVA content overall, with 10–35% in sealant layers, depending on required peel strength, cling, and flexibility at processing temperatures from 110–150°C.

Downstream process integration

• Coextrusion blown film or cast film lines with barrier and structural resins
• Corona or flame surface treatment to improve print adhesion
• Lamination and slitting for pouch and wrap production

Final product types

• Resealable food pouch films (cheese, meat, produce)
• Lidding films for trays and cups
• Meat and cheese shrink bags
• Snack and bakery flexible wraps

4. Wire & Cable Insulation Sheathing

Wire and cable manufacturers apply this EVA resin as part of low-smoke, halogen-free flame retardant insulation and jacketing formulations. Its balance of flexibility, elongation, and compatibility with mineral fillers (like ATH for flame resistance) allows for safe sheathing in sensitive environments. This end use undergoes comprehensive electrical, fire safety, and physical durability validation per global cable standards.

Industry compliance standards

• IEC 60502-1: Power cables with extruded insulation and their accessories
• UL 1581: Reference Standard for Electrical Wires, Cables, and Flexible Cords
• EN 50268/IEC 61034: Measurement of smoke density
• RoHS and REACH compliance (for absence of restricted substances)

Typical usage ratio

• Compounds generally contain 20–30% EVA by weight in conjunction with flame retardants and processing aids. Ratios may vary for mechanical flexibility, smoke performance, and extrusion throughput.

Downstream process integration

• Compounding in twin-screw extruders with ATH and process lubricants
• Granulation for dry blend feeding
• Extrusion coating onto copper/aluminum conductors via cross-head dies

Final product types

• Low voltage power cables for building wiring
• Control and instrumentation cables for industrial automation
• LSZH (Low Smoke Zero Halogen) data and communication cables
• Flexible appliance cords

5. Footwear Foam and Midsoles

Shoe component suppliers and foamers incorporate this resin into physically or chemically blown foamed sheets used in sports, fashion, and safety footwear. Its combination of rebound resilience, cell stability, and softness supports insole, midsole, and outsole manufacturing. Production settings must meet occupational safety and emission controls for compound preparation and molding operations.

Industry compliance standards

• OEKO-TEX STANDARD 100: Textile and footwear chemical safety
• REACH Regulation EC 1907/2006 (for chemical restrictions)
• EN ISO 20347/20345: Safety footwear specifications
• EN ISO 9001 (for in-plant QC and traceability)

Typical usage ratio

• Shoe foam formulations use 40–70% EVA by weight, tailored for hardness (Asker C), resilience, and processing in compression or injection molding. Higher vinyl acetate content softens the foam, while crosslinking degree adjusts elasticity and dimensional stability.

Downstream process integration

• Batch blending with blowing agents (azodicarbonamide, sodium bicarbonate), crosslinking agents, and pigments
• Sheet extrusion followed by press molding or direct injection into footbed/midsole molds
• Steam expansion and curing to develop closed-cell foam structure

Final product types

• Sports shoe midsoles and insoles
• Work safety boot footbeds
• Children’s and casual footwear soles
• Flip-flop and sandal base foams