Applications of Hanwha TotalEnergies E220F EVA in Industrial Manufacturing

Hanwha TotalEnergies E220F EVA is a high-performance ethylene-vinyl acetate copolymer widely used in industrial manufacturing sectors requiring controlled flexibility, resilience, and clarity. The following sections outline real-world application scenarios in which E220F supports advanced processing and stringent compliance needs.

1. Encapsulant Film Manufacturing for Photovoltaic Modules

Photovoltaic module producers adopt E220F to formulate encapsulant films that safeguard solar cells from humidity, UV light, physical shock, and electrical leakage throughout their life cycle. Incorporation of EVA ensures excellent crosslinking, adhesion to glass, and weatherability, pivotal during the lamination stage. Manufacturers select E220F for its well-defined melt flow and controlled vinyl acetate content, which enables consistent thermal processing and crosslinking parameters essential for high-throughput lamination lines in automated module assembly.

Industry compliance standards

• IEC 61215 (Crystalline silicon PV module durability test)
• IEC 61730 (PV module safety qualification)
• UL 1703 (Standard for Flat-Plate Photovoltaic Modules)
• RoHS Directive 2011/65/EU (Restriction of Hazardous Substances)

Typical usage ratio

• Encapsulant layer comprises 100% EVA-based resin, with E220F blending at 30–60 phr crosslinking agent, and 0.5–2 phr UV stabilizers. Adjusted according to cell technology, thickness, and crosslinking requirements.

Downstream process integration

• EVA granules compounded with additives in extruders, sheet-extruded, and pelletized.
• Pellets processed in flat-die calendering or extrusion coating lines to form encapsulant film.
• Films stacked in module lamination prior to vacuum-thermal curing step.

Final product types

• Crystalline silicon solar panel encapsulant sheets
• Thin-film photovoltaic module encapsulant films
• Bifacial cell encapsulant
• Building-integrated PV glass laminates

2. Hot Melt Adhesive Formulation

Industrial adhesive manufacturers use E220F as a principal polymer backbone for hot melt adhesive systems applied in packaging, woodworking, bookbinding, and automotive assembly. E220F supports excellent tack, flexibility at sub-zero temperatures, and compatibility with tackifiers and waxes, ensuring balance between bond strength, open time, and processability in high-speed packaging and converting lines. Its controlled melt flow properties allow accurate dosing during extrusion or slot die operations, even at fluctuating temperatures and mechanical shear conditions in continuous manufacturing environments.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives for food-packaging use)
• ISO 9001:2015 (Quality management for adhesive production)
• REACH Regulation (EC 1907/2006) registration
• ASTM D4498 (Standard for hot melt adhesive evaluation)

Typical usage ratio

• EVA content typically ranges from 28% to 45% by weight in formulated adhesives, with blend ratios adjusted based on application strength, bond substrate, and line speed. Higher EVA for flexibility, lower for rigidity or short open time.

Downstream process integration

• E220F fused in high-shear mixers with tackifiers, waxes, and stabilizers.
• Melt compounded batchwise or via single-screw extruders.
• Molten mass filtered and pelletized, delivered as granules, pillows, or blocks for end-user melting equipment.

Final product types

• Case and carton sealing hot melts
• Bookbinding spine adhesives
• Lamination adhesives for flexible packaging
• Product assembly adhesives for consumer electronics

3. Footwear and Sports Outsole Foam Compounds

Footwear component producers rely on E220F in injection-molded and compression-molded foam formulations for midsoles, outsoles, and sporting goods padding. Its controlled vinyl acetate ratio provides ideal cell morphology, abrasion resistance, and softness for athletic, leisure, and safety footwear. E220F supports precise foam expansion and rebound properties when compounded with physical blowing agents and crosslink initiators. This ensures color uniformity, tensile retention after aging, and dimensional stability during repeated manufacturing cycles under temperature and pressure variation.

Industry compliance standards

• GB/T 15107-2013 (China national outsole quality standard)
• ISO 20344:2021 (Footwear test methods)
• REACH Annex XVII (Phthalate and hazardous substance limitation)
• CPSIA (Lead and heavy metal limits for children’s footwear)

Typical usage ratio

• EVA base forms 55–80% of the compound by weight, with exact blend based on hardness, density, and required compressive set. Filler, colorant, and foaming agent adjusted for shoe type and performance target.

Downstream process integration

• Pre-mixed EVA compound pelletized or sheeted via twin-screw extruders.
• Material charged to granule stock feeders for injection-molding or automatic compression-molding machines.
• Direct-molded or cut and formed into sheeted blocks for further die-cutting or lamination.

Final product types

• Sports shoe midsoles
• Leisure and safety shoe outsoles
• Sandals and clog footbeds
• Protective sports padding and mats

4. Wire and Cable Sheathing Compounds

Cable and wire producers compound E220F with selected flame retardants and anti-oxidants to deliver flexible insulation and jacketing for power, communications, and specialty wiring. The material enables high resistance to cracking, UV radiation, and low-temperature embrittlement, essential for industrial, automotive, and consumer-grade cabling systems. E220F’s compatibility with key fire retardant additives supports compliance with stringent vertical burn standards and long-term dielectric property retention, critical in both indoor and outdoor cable deployments.

Industry compliance standards

• UL 62 (Flexible cords and cables)
• IEC 60502-1 (Power cable construction and performance)
• RoHS 2011/65/EU (Heavy metal and hazardous substance restriction)
• EN 50363-2-2 (EVA sheath material for low voltage cables)

Typical usage ratio

• EVA is typically 45–65% of the compound, tailored to target flexibility, flame retardant grade, and thickness. Adjustments depend on cabling voltage class and installation type.

Downstream process integration

• EVA granules dry-blended with additives and compounded by single/twin-screw extrusion.
• Feed to extrusion lines for continuous coating onto heated copper or aluminum conductors.
• In-line cooling and diameter control before spooling for final cable assembly.

Final product types

• Flexible wire insulation coatings
• Low voltage power cable jackets
• Signal and telecommunications cable sheaths
• Heat-shrinkable tubing stock

5. Flexible Packaging Film Blown and Cast Sheets

Producers of multilayer flexible packaging films use E220F in coextrusion with LDPE and LLDPE for food wraps, pouches, and medical packaging. E220F imparts enhanced sealability, clarity, and puncture resistance, supporting peelable seal layers and cold-sealing technology used in high-barrier packaging. Its ability to maintain clarity and low odor under rapid processing delivers required visual and functional properties for end products exposed to regulatory scrutiny and direct food contact.

Industry compliance standards

• FDA 21 CFR 177.1350 (EVA for food packaging films)
• EU 10/2011 Regulation (Plastics in contact with foodstuffs)
• ISO 22000 (Food packaging safety management)
• EN 1186 (Migration testing for food contact materials)

Typical usage ratio

• EVA content ranges from 8–22% in multilayer packaging structures. Lower ratio for backbone layers, higher for peelable or inner seal layers. Adjusted by product and equipment.

Downstream process integration

• EVA dry-blended and pelletized for use in blown film or cast film lines.
• Granules metered into extruder hoppers and melted for coextrusion alongside polyolefins.
• Films wound onto rolls for subsequent forming, printing, or lamination.

Final product types

• Food pouch inner seal films
• Peelable medical packaging lidding
• Cling wraps and bakery packaging
• Frozen goods outer wraps