Applications of Versalis Greenflex FH 45 EVA in Industrial Manufacturing

Versalis Greenflex FH 45 EVA is a high-performance ethylene-vinyl acetate copolymer widely adopted across several industrial value chains. Leveraging our advanced polymerization expertise, our Greenflex FH 45 EVA delivers consistent results in specialized downstream sectors that require strict process control and regulatory adherence. The following scenarios outline authentic sectors and processes where our material is actively used, supported by real industry expectations and technical practices.

1. Solar Photovoltaic Encapsulation Films

Downstream manufacturers use Greenflex FH 45 EVA for the lamination of photovoltaic modules, focusing on the encapsulation layer that protects solar cells from moisture, UV exposure, and mechanical stress. The strategic vinyl acetate content promotes adhesion while preserving optical clarity, and longevity targets extend to over 25 years in field installations. Producers require consistent pellet morphology and strict melt-flow controls to ensure cross-link density matches module durability standards.

Industry compliance standards

• IEC 61215 (Crystalline Silicon Terrestrial PV Modules)
• IEC 61730 (PV Module Safety Qualification)
• UL 746C (Polymeric Materials for Use in Electrical Equipment Evaluations)
• RoHS Directive (2011/65/EU)

Typical usage ratio

• 65–75% EVA in total film formulation; crosslinking additive adjusted 1–3% relative to EVA mass.

Downstream process integration

• EVA pellets are melt-extruded to produce films (thickness: 400–600 μm), then films are co-laminated onto solar cell arrays during vacuum lamination; crosslinking catalysts are incorporated pre-extrusion.

Final product types

• Photovoltaic modules (mono- and multicrystalline silicon)
• Flexible solar panels
• Building-integrated solar laminates

2. Footwear Injection Molding Compounds

Ethylene-vinyl acetate copolymers remain core to midsoles and outsoles for sports and safety footwear due to lightweight cushioning, resilience, and simple injection processing. Our material enables highly elastic blown foam structures, essential for both comfort and impact performance. Consistency in mechanical properties reduces rejects during multi-cavity molding and assures downstream compliance for global footwear brands.

Industry compliance standards

• REACH (Regulation EC No 1907/2006)
• EN ISO 20345 (Personal Protective Equipment – Safety Footwear)
• California Proposition 65 (for consumer product safety)
• ISO 9001 (Quality management in manufacture for consistency)

Typical usage ratio

• 45–65% as primary polymer in compounded blends, with fillers, foaming agents (1–3%), and pigmentation systems added per recipe; levels adjusted based on target hardness and rebound properties.

Downstream process integration

• Compounding with additives and stabilizers, pelletizing, followed by direct-feed injection molding or foam injection into aluminum foot molds; mold temperatures typically 130–160 °C.

Final product types

• Sports shoe midsoles and outsoles
• Work boots (antistatic and slip-resistant soles)
• Beach sandals and flip-flops

3. Hot Melt Adhesive Formulations

Many adhesive producers rely on this EVA to develop pressure-sensitive and hot-melt adhesives for packaging and wood working applications. Its controlled melt viscosity, polarity, and flexibility contribute to reliable bond strength and temperature resistance. Downstream formulators combine with tackifiers and waxes to target specific adhesion and peel strength parameters for automated industrial assembly lines.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives in contact with food packaging, where applicable)
• ASTM D1876 (Peel Resistance Testing)
• ISO 9001 (Process and batch traceability)
• SVHC Regulation (Substances of Very High Concern)

Typical usage ratio

• 20–55% of adhesive bulk, adjusted higher for flexible bonds and lower for rigid or high-tack products; precise ratio depends on end-use substrates.

Downstream process integration

• Resin is melt-blended with hydrocarbon tackifiers, paraffin or microcrystalline waxes, and antioxidants; hot-melt granules or blocks are extruded, pelletized, and packed.

Final product types

• Case and carton sealing adhesives
• Edge banding adhesives for wood and furniture
• Bookbinding glues

4. Wire and Cable Insulation Compounds

Cable compound manufacturers exploit the copolymer’s balance of flexibility and dielectric strength for primary insulation and jacketing on automotive and low-voltage power cables. Downstream use targets smooth extrusion behavior, environmental stress crack resistance, and compatibility with flame retardant systems, with each batch adjusted to application-specific flammability and aging standards.

Industry compliance standards

• UL 1581 (Reference standard for electrical wires, cables, and flexible cords)
• IEC 60811 (Insulating and sheathing materials test methods)
• RoHS Directive (2011/65/EU, heavy-metal free for environmental compliance)
• ISO 6722 (Road vehicle cables – dimensions and requirements)

Typical usage ratio

• 55–75% EVA in filled cable compound; combined with inorganic flame-retardant fillers (ATH, 35–60%) and processing aids (1–1.5%) for finished cable grade properties.

Downstream process integration

• Base polymer is dry-blended with flame retardants, antioxidants, and pigments, then twin-screw extruded onto copper or aluminum conductor cores in one-pass continuous insulation lines.

Final product types

• Low-voltage power and control cables
• Automotive low-voltage wiring
• Flexible appliance cords

5. Flexible Food Packaging Films

Converters use this EVA as a sealing and flexibility modifier in multilayer coextruded films for perishable foods, leveraging its low-temperature sealing and mechanical toughness. We supply resin grades consistent in melt index and TI so that converter lines meet packing machine speed and performance without film breaks or seal failures. Downstream, processors adjust blends for aroma barrier and puncture resistance per food type.

Industry compliance standards

• US FDA 21 CFR 177.1350 (Ethylene-vinyl Acetate co-polymers for food-contact applications)
• EU Regulation No 10/2011 on plastic materials and articles intended to come into contact with food
• BRC Global Standard for Packaging Materials
• ISO 22000 (Food safety management, packaging chain)

Typical usage ratio

• 10–30% EVA in multilayer film; variation based on target seal strength, peel properties, and temperature range.

Downstream process integration

• EVA pellet is gravimetrically dosed into extruders with LDPE/LLDPE, co-extruded onto chill rolls, and further converted by slitting and roll-to-roll printing before final pouch or bag conversion.

Final product types

• Vacuum food pouches
• Resealable bags
• Meat, cheese, and bakery overwrap film

6. Waterproofing Membrane Sheets

Specialist construction material producers formulate high-flexibility waterproofing sheets for roofing and underground protection, capitalizing on EVA’s plasticizer compatibility and UV stability. Manufacturers require precise resin-batch transparency and toughness for mechanical bond and site handling, and the copolymer integrates efficiently with light stabilizers and reinforcement scrim to withstand extended weathering cycles.

Industry compliance standards

• EN 13956 (Flexible sheets for waterproofing – Plastic and rubber sheets for roof waterproofing)
• GB/T 328.11 (Chinese standard for polymer waterproof materials)
• ASTM D570 (Water Absorption of Plastics)
• ISO 9001 (Continuous batch traceability in sheet production)

Typical usage ratio

• 40–60% EVA in blend with plastomer and fillers; ratio fine-tuned to sheet thickness (1.2–2 mm) and elongation targets for site performance.

Downstream process integration

• The EVA blend is melt-extruded through wide dies, calendered, and laminated onto geotextile scrims; surface treatments or inks for branding are applied in-line before wound-up and slitting.

Final product types

• Single-ply roofing sheets
• Underground tunnel waterproof membranes
• Tank and reservoir lining sheets