Applications of Versalis Greenflex ML 30 EVA in Industrial Manufacturing

Greenflex ML 30 EVA, produced by Versalis, is a high-performance, bio-based ethylene vinyl acetate copolymer recognized for its unique balance of elasticity, processability, and environmental profile. As a manufacturer, we enable downstream industries to formulate advanced products across several key sectors. The following application scenarios reflect mature, evidence-based uses of this material in contemporary industrial manufacturing, in alignment with global compliance requirements and sector-specific operational standards.

1. Photovoltaic Encapsulant Films for Solar Modules

Our ML 30 EVA grade adds significant value to the encapsulation layer of solar panels by offering high transparency, superior adhesive properties, and stability under prolonged UV exposure. The polymer’s properties support stringent weathering and electrical insulation needs fundamental to modern photovoltaic panel assembly lines. Formulation engineers select ML 30 EVA for its reliable crosslinking behavior during lamination, resulting in enhanced module durability and sustained performance throughout the product lifecycle.

Industry compliance standards

• IEC 61215:2021 (Crystalline silicon terrestrial photovoltaic modules design qualification and type approval)
• UL 1703 (Standard for Flat-Plate Photovoltaic Modules and Panels)
• IEC 61730-1/2 (Photovoltaic module safety qualification)
• RoHS Directive 2011/65/EU (Restriction of Hazardous Substances)

Typical usage ratio

• 65–75% of encapsulant film mass; adjusted with additives and crosslinkers (e.g., peroxides) based on desired gel content and cure speed

Downstream process integration

• Compounded with UV stabilizers and adhesion promoters, extruded into sheets (0.3–0.5 mm), vacuum laminated with solar cells under controlled heat and pressure, followed by in-line crosslinking and trimming

Final product types

• Thermally crosslinked encapsulant films for crystalline silicon and thin-film solar modules
• Photovoltaic glass-glass and glass-backsheet panels

2. Hot Melt Adhesives for Packaging and Bookbinding

Industrial adhesive manufacturers use ML 30 EVA in hot melt adhesive (HMA) systems where consistent flow, tack, and temperature stability are essential for continuous high-speed packaging and commercial bookbinding operations. The resin’s melt viscosity profile delivers the flow and setting times required for modern packaging lines and case-making units. Its partially bio-based composition aligns with lifecycle sustainability targets without compromising adhesive strength.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives for indirect food contact packaging)
• REACH Regulation (EC) No 1907/2006 (Registration, Evaluation, Authorization and Restriction of Chemicals)
• ISO 9001:2015 (Quality management systems for adhesive formulation)
• EN 923 (Adhesives—Terms and definitions; relevant for labelling and process documentation)

Typical usage ratio

• 30–60% of adhesive mass; ratio depends on desired open time, tack, flexibility, and compatibility with tackifiers, waxes, and fillers

Downstream process integration

• Melt blended with hydrocarbon resins and plasticizers in heated reactors, cooled and extruded as pellets or small blocks, then supplied to packaging or bookbinding equipment for application by slot, spray, or extrusion guns

Final product types

• Hot melt adhesives for carton sealing, case and tray packaging, and back gluing in bookbinding lines
• Spine and side adhesives for notebooks, softcover books, and catalogues

3. Foam Injection Moulding for Footwear Midsoles

Shoe sole and midsoles manufacturers utilize ML 30 EVA to control cellular structure, rebound elasticity, and softness in lightweight, high-cushioning foam. The consistent vinyl acetate content ensures fine cell morphology and resilience during direct injection moulding. Process engineers benefit from predictable expansion rates and optimized crosslinking characteristics, which minimize shrinkage and surface defects in finished footwear components.

Industry compliance standards

• ISO 20871:2018 (Footwear—Test methods for outsoles—Abrasion resistance)
• ISO 9001:2015 (Footwear manufacturing quality systems)
• REACH Regulation (EC) No 1907/2006 (Material safety compliance)
• PROP65 (California Proposition 65 for consumer safety if imported to North America)

Typical usage ratio

• 45–80% of base resin weight; precise percentage varies by foam density needs and integration with blowing agents, crosslinkers, and pigments

Downstream process integration

• Batch compounded with nucleating agents and foaming aids, pelletized, then injection moulded at 140–160°C into midsole or outsole forms before in-mould crosslinking for dimensional stability

Final product types

• Lightweight running shoe midsoles, sandal soles, and casual footwear components
• Shock-absorbing orthotic inserts

4. Flexible Film Extrusion for Agricultural Greenhouse Covers

Greenhouse film converters rely on ML 30 EVA to formulate co-extruded films with excellent flexibility, light transmission, and resistance to low temperatures. The polymer modifies mechanical and optical properties, supporting year-round crop cultivation under diverse environmental conditions. ML 30 EVA’s compatibility with UV stabilizers and antifogging additives allows for enhanced film longevity and crop yield improvements.

Industry compliance standards

• EN 13206:2023 (Plastic films for agricultural applications—Specifications and test methods)
• ISO 9001:2015 (QMS for plastic film extrusion)
• EU Regulation 10/2011 (Food contact material if used in proximity to edible plants)
• REACH Regulation (EC) No 1907/2006

Typical usage ratio

• 10–25% of co-extruded film layer mass; ratio adjusted according to light transmission and mechanical strength targets, and weather resistance requirements

Downstream process integration

• Blended with LDPE and specialty additives, melt-processed in blown film extrusion lines, followed by inline slitting and rewinding for various greenhouse sizes

Final product types

• Single-layer and multilayer greenhouse covers
• Tunnel and row crop protection films

5. Wire and Cable Insulation Compounds

Electrical cable compounders formulate insulation and sheathing materials with ML 30 EVA to combine high dielectric strength with flame retardancy and flexibility. The polymer’s predictable process performance allows for precise extrusion at high line speeds, yielding smooth and defect-free cable jackets that comply with international electrical and fire safety norms. Additive compatibility extends the lifetime of wire insulation in challenging field environments.

Industry compliance standards

• UL 1581 (Reference standard for electrical wires, cables, and flexible cords)
• IEC 60502-1:2016 (Power cables with extruded insulation and their accessories)
• RoHS Directive 2011/65/EU
• ISO 14001:2015 (Environmental management for cable manufacturing)

Typical usage ratio

• 35–55% of compound weight, tailored based on physical strength, insulation class, and flame retardancy required; balance made up of co-polymers, fillers, and functional additives

Downstream process integration

• Dry-blended and melt-compounded with fire retardants and process aids, then extruded over copper or aluminum conductors using single- or twin-screw extrusion lines; optional crosslinking for enhanced thermal performance

Final product types

• Low- and medium-voltage electrical wire insulation
• Sheaths for power, control, and solar cables

6. Playground and Sports Surface Tiles

Producers of shock-absorbing sports flooring materials employ ML 30 EVA for its balance of elasticity, resilience, and energy absorption. The polymer supports precise density control during moulding, crucial for meeting critical fall attenuation and safety standards. It also offers excellent colorability for custom surface applications, including school and municipal recreation zones.

Industry compliance standards

• EN 1177:2018 (Impact attenuating playground surfacing—Determination of critical fall height)
• ISO 9001:2015 (QMS in sports surface manufacturing)
• EN 71-3 (Safety of toys—Migration of certain elements if for children’s play areas)
• REACH Regulation (EC) No 1907/2006

Typical usage ratio

• 60–85% of total compound mass, depending on the required shock absorption and rebound characteristics combined with foaming agents and pigments

Downstream process integration

• Batch mixed, foamed, and moulded in heated compression moulds for mat or tile shapes; cooled and post-processed for edge trimming and modular fitting

Final product types

• Impact-absorbing playground tiles
• Sports and gym flooring rolls or mats