Applications of Versalis Greenflex ML 50 EVA in Industrial Manufacturing

Versalis Greenflex ML 50 EVA serves as a specialty ethylene-vinyl acetate copolymer, widely adopted across several advanced manufacturing sectors. As the direct manufacturer, we ensure precise material consistency to support high-specification applications and demanding compliance profiles.

1. Solar Panel Encapsulation Films

Photovoltaic panel manufacturers use this EVA copolymer as a key encapsulation layer for crystalline silicon modules. Its balance of flexibility and crosslinking responsiveness helps retain optical clarity and electrical insulation through accelerated aging and thermal cycling. Material optimization focuses on minimizing lamination defects, gel content, and acetic acid migration, supporting module durability over 25+ years. EVA loading in encapsulation film formulations directly impacts crosslinking density, adhesion to glass, and cell protection performance.

Industry compliance standards

• IEC 61215 (Terrestrial PV Modules — Design Qualification)
• IEC 61730 (PV Module Safety Qualification)
• UL 1703 (Standard for Flat-Plate Photovoltaic Modules and Panels)
• RoHS 2011/65/EU Directive

Typical usage ratio

• 40%–60% by weight in encapsulation film masterbatch, adjusted according to optical and gel content targets

Downstream process integration

• Blend as main resin component during blown or cast film extrusion
• Incorporate crosslinking initiators and UV stabilizers during compounding
• Apply lamination under vacuum thermal processing onto cell strings

Final product types

• Solar encapsulant films
• Photovoltaic modules (mono- or polycrystalline silicon)
• Perc and bifacial solar panels

2. Hot Melt Adhesives for Packaging

Producers in the packaging industry rely on the copolymer's controlled melt index for formulating hot melt adhesives with required open time, tack, and thermal bonding performance. Application focuses on carton closing and labeling, where product purity supports safe food packaging and allows compliance with global indirect food contact regulations. Typical formulations balance EVA with tackifier resins, waxes, and stabilizers to achieve precise viscosity and adhesion profiles across various substrates.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives — Indirect Food Additive Regulations)
• EU Regulation No. 10/2011 (Plastics Intended for Food Contact)
• GMP Regulation (EC) 2023/2006
• REACH (EC) 1907/2006

Typical usage ratio

• 25%–45% of total hot melt adhesive formulation by weight, depending on substrate and adhesion strength requirement

Downstream process integration

• Feed as a primary polymer in large-scale adhesive batch blending
• Homogenize with hydrocarbon resins and wax modifiers in heated mixers
• Extrude and palletize for downstream hot melt application systems

Final product types

• Carton and case sealing adhesives
• Bottle labeling hot melts
• Flexible laminating adhesives

3. Footwear Injection Molding Compounds

Footwear manufacturers exploit this copolymer’s elastic properties and low density to produce lightweight midsoles and outsoles, especially in athletic and casual shoes. The polymer allows precise foaming and expansion control, providing good abrasion resistance while supporting slip and hardness customization. Regulatory compliance here is vital for consumer safety, especially for items in direct skin contact and for export markets with restricted substances regulations.

Industry compliance standards

• ISO 20871 (Footwear — Outsole Abrasion Resistance)
• REACH Annex XVII (Restricted Substances in Finished Articles)
• GB/T 15107 (Physical Properties of Footwear EVA Soles – China)
• CPSIA (Consumer Product Safety Improvement Act – for children’s shoes)

Typical usage ratio

• 60%–90% in foam compound, adjusted for density and expansion ratio with foaming agents, calcium carbonate, and colorants

Downstream process integration

• Dry-blend and melt-mix with physical or chemical foaming agents
• Injection or compression mold into footwear sole and midsole forms
• Post-molding crosslinking by controlled heating, where required

Final product types

• Sports shoe midsoles
• Sandal soles
• Children’s safety shoes
• Work and casual footwear soles

4. Wire and Cable Insulation Compounds

Wire and cable manufacturers use the material’s dielectric stability to produce insulating sheaths in low- and medium-voltage power cables. The ready compatibility with flame retardant systems and plasticizers enables engineering cable compounds with enhanced flexibility, low temperature resistance, and stable volume resistivity. Product formulations must pass rigorous electrical and flammability tests, along with long-term thermal aging trials.

Industry compliance standards

• IEC 60228 (Conductors of Insulated Cables)
• UL 1581 (Electrical Wires, Cables, and Flexible Cords)
• RoHS (Restriction of Hazardous Substances Directive)
• EN 50363-2-2 (EVA Compounds for Cable Insulation)

Typical usage ratio

• 35%–55% by weight in compound, with balance from fire retardants (ATH, magnesium hydroxide) and plasticizers as required by mechanical and fire performance

Downstream process integration

• Pre-mix with mineral fillers and stabilizers in internal mixers
• Compound by twin-screw extrusion to homogeneous pellet form
• Extrude as primary sheath layer over conductor cores

Final product types

• Low-voltage electrical wire insulation
• Flexible control cables
• Cable jacketing for industrial and building installations

5. Film Blends for Greenhouse and Mulch Films

Agricultural film converters utilize this resin to improve mechanical strength, puncture resistance, and clarity of blown or cast polyethylene films for mulching and greenhouse use. Here, the focus is on maximizing film toughness at reduced thickness, as well as enhancing light transmission and anti-fog performance through optimized blending and precise control of extrusion temperatures. Regulatory constraints dictate the allowable additives and ensure environmental compliance for field deployment.

Industry compliance standards

• EN 13655 (Plastic Films for Agriculture — General Characteristics)
• REACH Regulation (Annex XVII — Restriction on Additives)
• EU Regulation 2019/833 (Agricultural Plastic Films Directives)
• GB/T 19487 (Technical Requirements for Agricultural Plastic Films — China)

Typical usage ratio

• 10%–30% blended with LDPE or LLDPE, ratio tuned by film strength and elasticity targets

Downstream process integration

• Pellet blend in pre-mix silos before blown or cast film extrusion
• Control film gauge and blending temperature to minimize gel and haze
• Co-extrude with UV-stabilizers and anti-fog additives as required

Final product types

• Greenhouse covering films
• Mulch and silage wraps
• Soil solarization foils