Applications of Celanese Ateva 2820AG EVA in Industrial Manufacturing

As the direct manufacturer of Ateva 2820AG Ethylene Vinyl Acetate (EVA), we support high-value industrial clients worldwide in integrating this copolymer into demanding downstream processes. The material’s precise vinyl acetate content, melt index, and consistency enable robust performance across key segments including photovoltaic encapsulation, wire and cable insulation, film extrusion, hot melt adhesives, and technical foam products. Below, we detail proven commercial applications, showing regulatory compliance, precise formulation practices, industrial process stages, and finished good types from our global partners.

1. Photovoltaic Module Encapsulation Sheets

Ateva 2820AG EVA serves as a primary encapsulation resin for photovoltaic (PV) solar modules, where process consistency, optical clarity, and reliability under UV exposure determine module service life and field performance. Technical formulators rely on its controlled melt index and acetate level to achieve high adhesion to glass, efficient lamination, and minimal water vapor permeability, all under the strict protocols of module lines subject to continual electrical and thermal cycling tests.

Industry compliance standards

• IEC 61215 and IEC 61730 requirements for module safety and performance
• UL 1703 certification for flat-plate PV modules
• TÜV Rheinland PV Material Certification
• REACH and RoHS regulations on hazardous substances

Typical usage ratio

• 75–80 wt% of encapsulant sheet compositions; adjusted for filler and crosslinker loading based on module durability targets

Downstream process integration

• Direct extrusion or calendaring into encapsulant film, followed by peroxide crosslinking during vacuum lamination of module stacks
• Integrated with UV absorbers and curing agents prior to film shaping

Final product types

• Photovoltaic module encapsulant sheets
• Backsheet-interlayer films for accelerated weathering resistance
• Flexible solar cell packaging materials

2. Wire and Cable Insulation Compounds

This EVA grade plays a central role in wire and cable sheathing formulations, especially in applications demanding flexible yet flame retardant jacketing around copper or aluminium cores. Cable compounders select it for its balance of processability and electrical properties, controlling shrinkage and mechanical resilience through precise melt blending—resulting in formulations meeting international electrical safety and halogen-free requirements.

Industry compliance standards

• UL 62, UL 758 (appliance wiring materials)
• IEC 60502-1 for power cables with extruded insulation
• RoHS Directive (EU) 2011/65/EU for hazardous substances
• EN 50267 (halogen-free low smoke cable requirements)

Typical usage ratio

• 35–50 wt% of cable compound blends, modifiable with flame retardants or plasticizers in accordance with cable flexibility and fire safety grade

Downstream process integration

• Melt blending with stabilizers and fillers, followed by extrusion onto conductor wires using twin-screw or single-screw extruders under controlled cooling

Final product types

• Flexible power cable insulations
• Communication cable jacketing
• Halogen-free flame retardant sheaths for low voltage wiring

3. Film Extrusion for Food Packaging

In multilayer food packaging film lines, converters depend on this EVA raw material for both sealing and impact improvement layers, supporting converters that operate under certified food safety regimes. The consistent composition helps processors meet migration limits, while its compatibility with LDPE enhances sealability and drop resistance of packaged goods, critical for demanding filling lines and cold chain logistics.

Industry compliance standards

• EU Regulation (EU) No 10/2011 on plastic materials in food contact
• FDA 21 CFR 177.1350 for ethylene-vinyl acetate copolymers in food packaging
• GMP Regulation (EC) 2023/2006 for good manufacturing practices of food contact materials
• ISO 22000 (Food Safety Management Systems)

Typical usage ratio

• 5–18 wt% in coextruded film structures, selected for required seal strength and clarity; higher levels for peelable or easy-open films

Downstream process integration

• Pellet blending and melt coextrusion as sealing/adhesive or impact modifier layers, integrating with PE and barrier polymers on cast or blown film lines

Final product types

• Laminated pouches for liquids and semi-solids
• Vacuum packaging films
• Peelable lidding films for food trays

4. Hot Melt Adhesive (HMA) Formulations

Specialty hot melt adhesive manufacturers choose this copolymer as a base for pressure-sensitive or packaging adhesives. Its predictable flow and molecular structure control the open time, bond formation speed, and peel strength. HMAs require careful resin-plasticizer ratios to pass regulatory tests for toy, paper, hygiene, and sometimes incidental food contact, with application-specific rheology and tack profiles controlled by precise raw material ratios.

Industry compliance standards

• FDA 21 CFR 175.105 for adhesives in indirect food contact
• EN 71-3 (Toy Safety – migration of certain elements)
• ASTM D3330 for peel adhesion properties
• ISO 9001 certified HMA production

Typical usage ratio

• 25–45 wt% in the overall adhesive mass, adjusted with tackifiers, waxes, and plasticizers to achieve desired open time and viscosity

Downstream process integration

• Solid-state blending with resins and additives, followed by melt compounding and cooling to solid blocks or pillow pellets for end-user application

Final product types

• Bookbinding adhesive blocks and pellets
• Pressure-sensitive tapes and labels
• Carton and case sealing adhesives

5. Technical Foam Products for Sports and Footwear

Foam converters employ this EVA in closed-cell foaming processes for sports, footwear, and protective padding, exploiting its uniform cell structure and durability under dynamic loads. Qualified production runs meet chemical emissions limits and product performance tests, with the polymer dosage finely tuned to match density, rebound, and compression set requirements of diverse technical foams.

Industry compliance standards

• ISO 20344/20347 (Footwear Safety and Comfort)
• EN 71-9 (Safety for Toys – organic chemical compounds)
• Oeko-Tex Standard 100 (textile raw material safety)
• REACH Annex XVII for restricted substances in consumer goods

Typical usage ratio

• 60–85 wt% in foam formulations; higher content for lower-density, higher-elasticity foam types used in athletic outsoles or yoga mats

Downstream process integration

• Compounding and mixing with blowing agents and nucleators, followed by closed-mold or continuous extruded foaming with high-temperature steam or nitrogen expansion systems

Final product types

• Sporting goods outsole and midsole foams
• Shock-absorbing mats and pads
• Lightweight shoe inserts and slippers