Applications of Versalis Greenflex XS 70 EVA in Industrial Manufacturing

Versalis Greenflex XS 70 EVA is a high-performance ethylene vinyl acetate copolymer designed for advanced industrial applications across several downstream sectors. As the direct manufacturer, we support global producers with consistent quality and processability for demanding manufacturing environments. Below are the key application areas where this material delivers proven value.

1. Photovoltaic Encapsulation Films

Producers of photovoltaic panels frequently employ Greenflex XS 70 EVA in the manufacturing of encapsulation films, which protect solar cells against moisture ingress, mechanical shocks, and UV exposure. This copolymer offers stable crosslinking characteristics crucial for outdoor reliability and maintains transparency, essential for photovoltaic efficiency. In automated lamination, it exhibits reliable flow and bonding properties, meeting rigorous industry standards for module durability.

Industry compliance standards

• IEC 61215 (Crystalline Silicon Terrestrial PV Modules – Design Qualification and Type Approval)
• UL 1703 (Flat-Plate Photovoltaic Modules and Panels)
• RoHS Directive (2011/65/EU for hazardous substances)
• REACH Regulation (EC) No 1907/2006 chemical safety compliance

Typical usage ratio

• 65–80 wt% as the main polymer in encapsulation films; formulation adjusted for specific cell types and thickness requirements, with other additives like crosslinking agents and UV absorbers at lower levels

Downstream process integration

• Raw material melt-compounded with stabilizers and crosslinkers, extruded into sheets, then laminated onto photovoltaic cells during panel assembly

Final product types

• Encapsulation sheets for crystalline silicon PV modules
• Backsheet coatings for thin-film solar panels
• Flexible solar module laminates

2. Hot Melt Adhesives for Packaging and Bookbinding

Industrial adhesive formulators use Greenflex XS 70 EVA as a principal base polymer for hot melt systems. Its controlled viscosity and balance of flexibility and adhesion allow tight bonding on a wide range of substrates. In automated packaging and bookbinding lines, processors adjust blend ratios to tune open time, set speed, and flow profiles to meet both operational throughput demands and stringent regulatory requirements concerning food contact and workplace safety.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives for indirect food contact)
• EN 923 (Adhesives – Terms and Definitions)
• ISO 9001 (Quality Management Systems for manufacturing process control)
• BfR XXI (Commodities Regulation – Paper and board adhesives in contact with food)

Typical usage ratio

• 30–60 wt% EVA relative to total adhesive formulation; balance includes tackifiers, waxes, antioxidants, varied per end-use environment and bonding strength expectations

Downstream process integration

• Resin is placed in internal mixers or extruders, combined with tackifiers and waxes, then pelletized or direct-compounded for melting and application onto paper, cardboard, or printed sheets

Final product types

• Case and carton sealing adhesives
• Spine adhesives for bookbinding
• Labels and tapes for consumer goods packaging

3. Footwear Soling and Injection Molding Compounds

Shoe component manufacturers use this raw material to formulate injection and compression molded compounds for midsoles, outsoles, and various cushioning parts. Its controlled vinyl acetate content improves elasticity and impact resilience while providing the necessary abrasion resistance for sports, leisure, and casual footwear. Compounders adjust filler and additive levels to meet regional standards for restricted substances and to conform to each brand’s durability and performance requirements.

Industry compliance standards

• REACH Annex XVII (Limits for phthalates and PAHs in consumer footwear articles)
• EN ISO 20344/20345 (Personal Protective Equipment – Test methods for footwear)
• GB/T 15107 (Chinese standard for rubber outsole physical properties)
• Ecolabel guidelines for restricted chemicals in footwear (if specified by downstream customer)

Typical usage ratio

• 30–55 wt% in soling compound; content varies with application (athletic, safety, fashion) and mechanical property targets, with remaining balance of fillers, plasticizers, pigments, and crosslinking agents

Downstream process integration

• Granules dry-blended or melt-compounded with process oils and foaming agents before injection or compression molding on automated lines

Final product types

• Sports shoe midsoles and outsoles
• Kids’ and leisure footwear soles
• Work and safety boot components

4. Wire & Cable Insulation and Sheathing

Wire and cable producers adopt this EVA grade when compounding flexible, halogen-free insulation and jacketing for electric and communications wiring. The copolymer achieves insulation thickness uniformity and electrical performance that meets, or exceeds, international standards. Flexible formulations ensure easy stripping, flame retardancy, and stable long-term dielectric strength, while process engineers balance filler content to target required class ratings and compliance mandates.

Industry compliance standards

• IEC 60502-1 (Power cables with extruded insulation and their accessories)
• RoHS 2011/65/EU (Restriction of Hazardous Substances)
• EN 50290-2-22 (Cables – General requirements – Environmental aspects)
• UL 62 (Flexible cords and cables for North America)

Typical usage ratio

• 25–40 wt% EVA in insulation compound; ratio tailored by cable type, flame retardant system, and specific mechanical property requirements

Downstream process integration

• Compounded with fire retardants, plasticizers, and stabilizers in twin-screw extruders before extrusion as insulation or sheath layer onto copper/aluminum conductors

Final product types

• Low-voltage power cable insulation
• Signal cable jacketing
• Flexible appliance cords

5. Flexible Film and Sheet for Food and Medical Packaging

Film converters utilize XS 70 EVA in multilayer co-extrusion processes to manufacture flexible packaging films that demand strong sealing, puncture resistance, and clarity. These films serve as primary barriers in food and medical device packaging, where regulatory oversight for migration limits and biocompatibility is strict. Process engineers fine-tune blend ratios to optimize seal integrity on high-speed form-fill-seal lines and prevent off-odor generation during storage.

Industry compliance standards

• FDA 21 CFR 177.1350 (Ethylene-vinyl acetate copolymers in contact with food)
• EU 10/2011 (Plastics intended to come into contact with food)
• ISO 11607-1 (Packaging for terminally sterilized medical devices – Requirements for materials)
• GMP EC 2023/2006 (Good Manufacturing Practice in food contact materials production)

Typical usage ratio

• 12–35 wt% as one layer in multilayer film structure; proportion driven by performance demand—sealing strength, flexibility, thickness, and end-use (direct food or secondary packaging)

Downstream process integration

• Co-extrusion with polyethylene, polyamide, or polypropylene during blown or cast film production, with resin supplied in pellet form for direct feeding to extruders

Final product types

• Thermoformable food trays and lidding films
• Medical device pouches
• Vacuum and shrink bags for meat and dairy products

6. Foam Sheet for Sports and Leisure Goods

Foam processors choose this EVA copolymer to create crosslinked and non-crosslinked foam sheets, blocks, and molded parts for protective sporting goods, yoga mats, and recreational equipment. Precise control of density and cell structure results from its predictable reaction profile during compounding and expansion. Regulatory attention focuses on VOCs, chemical residues, and consumer safety, with foamers ensuring all ingredients meet health and safety guidelines.

Industry compliance standards

• EN 71-3 (Safety of toys – Migration of certain elements, for play mats and children’s goods)
• REACH SVHC (Substances of Very High Concern, for finished goods)
• California Proposition 65 (Safe Drinking Water and Toxic Enforcement Act, consumer goods labelling)
• ISO 9001 (Quality management for consistent process control)

Typical usage ratio

• 45–60 wt% as the core polymer in foam compound; percentage varies by foam thickness, target density, and compression set requirements, with remainder foaming agents and colorants

Downstream process integration

• Mixed with blowing agents and crosslinkers for batch or continuous expansion, followed by sheet extrusion, calendaring, or direct molding into product shape

Final product types

• Play mats and protective headgear liners
• Diving fins and flotation aids
• Yoga and exercise mats