Applications of Versalis Greenflex MP 35 EVA in Industrial Manufacturing

Versalis Greenflex MP 35 EVA is a high-performance ethylene-vinyl acetate copolymer. As a direct manufacturer, we supply this material for precision applications across critical industries. Below are the primary sectors using our EVA copolymer, with detailed technical integration for each real-world manufacturing process.

1. Photovoltaic Encapsulant Sheet Production

Major solar module manufacturers use this copolymer as the base resin for photovoltaic encapsulant sheets, which protect embedded solar cells from moisture, dust, and electrical breakdown. The strict processing needs involve controlled extrusion, crosslinking under lamination, and optical clarity to minimize power loss. Formulation parameters require customized antioxidant and crosslinking additive packages, adjusted according to local grid certification and regional UV exposure demands. Final encapsulant films undergo rigorous gel content, shrinkage, and adhesion testing before module assembly.

Industry compliance standards

• IEC 61215 Performance Qualification for Terrestrial PV Modules
• UL 1703 Standard for Flat-Plate Photovoltaic Modules
• RoHS 2011/65/EU and REACH SVHC Substance Compliance
• EN 50548 PV Connector Compatibility Requirements

Typical usage ratio

• Resin loading at 70-95% by weight of encapsulant compound, adjusted based on crosslinking system (1-5% peroxide) and auxiliary stabilizers

Downstream process integration

• Continuous sheet extrusion, flat-die forming, on-line thickness gauging
• Blending with UV stabilizers and adhesion promoters during compounding
• Thermal lamination onto solar cells, followed by inline crosslinking at 150–170°C
• Quality control by DSC gel content, peel test, and optical haze measurement

Final product types

• Photovoltaic encapsulant sheets
• Perc, Mono-Si, and Multi-Si solar panels
• Double-glass module films
• Bifacial module encapsulation

2. Hot-Melt Adhesive Manufacturing

Industrial adhesive producers leverage the material for hot-melt adhesive (HMA) systems, targeting packaging, woodworking, and nonwoven hygiene sectors. Its high vinyl acetate content provides superior flexibility, adhesion on polar substrates, and resistance to thermal cracking. Formulators select the resin based on viscosity control, open-time, and required bond strength. Process engineers design blending lines for efficient integration with waxes, tackifiers, and plasticizers, managed under ISO 9001-certified batch records.

Industry compliance standards

• FDA 21 CFR 175.105 for Indirect Food Additives (Adhesives)
• ISO 9001:2015 Quality Management System for Batch Consistency
• REACH Annex XVII for Restricted Substances
• ASTM D1876 for Peel Resistance Testing

Typical usage ratio

• Main polymer phase at 25-55% in final adhesive formulation, balance is tackifiers, waxes, synthetic or natural resins; adjusted per substrate and viscosity requirement

Downstream process integration

• High-shear blending in jacketed mixing vessels
• Pigment and additive masterbatch addition for colored HMAs
• Melt compounding, degassing, and drum packaging or slat cutting for commercial use
• Line trials on end-use applicators (slot, spray, bead)

Final product types

• Carton and case sealing hot-melt sticks
• Bookbinding adhesives
• Disposable hygiene nonwoven adhesives
• Edge banding HMAs for furniture assembly

3. Flexible Packaging Film & Lamination

Processors in the flexible packaging industry incorporate this copolymer as a modifier in multilayer film extrusion and as a compatibilizer for composite lamination film structures. Its flexibility and clarity are essential in food and pharma packaging, providing mechanical strength and improved sealability. Industrial lines run pre-defined extrusion profiles, calibrating temperature and shear to retain optical performance and avoid gels. Regulatory demands around organoleptic properties and non-intentional additives mandate advanced QC, with batch traceability against food contact safety records.

Industry compliance standards

• EU 10/2011 Plastics Regulation for Food Contact Materials
• FDA 21 CFR 177.1350 Ethylene-Vinyl Acetate for Food Packaging
• GMP Regulation (EC) No 2023/2006
• Migration Testing per EN 1186

Typical usage ratio

• Addition at 7-22% in multilayer PE/EVA film, or 2-8% as a modifier in polyolefin blended structures; fine-tuned by desired sealing range and impact requirements

Downstream process integration

• Co-extrusion with LDPE, LLDPE, or mPE on multilayer blown/cast film lines
• Adhesive lamination with aluminum foil or polyester substrates
• Corona treatment for enhanced printability
• Roll-slitting and in-process migration testing

Final product types

• Flexible pouch films for liquid and paste foods
• Blister packaging for pharmaceuticals and supplements
• Vacuum and MAP (Modified Atmosphere Packaging) films
• Barrier-coated snack packaging laminates

4. Footwear and Insole Manufacturing

Footwear sole and insole producers use this EVA grade for injection, compression, and sheet foaming. The controlled-grade resin ensures lightweight, elastic, and abrasion-resistant soles, meeting critical physical requirements for end-use sports and everyday footwear. Mixing ratios and blowing agent dosages depend on cell structure required by the OEM, with factory-specific molding temperatures and residence times to optimize rebound and anti-slip properties. Industrial quality control focuses on density, tensile, and slip resistance numbering for each insole or outsole batch.

Industry compliance standards

• EN ISO 20344/20345 for Footwear Safety & Performance
• ISO 20871 for Slip Resistance Testing
• GB/T 15107 for Physical Properties of Soles and Heels
• REACH Annex XVII phthalate and PAH restriction

Typical usage ratio

• Base polymer forms 60-90% by mass of foaming composites; blowing agent, crosslinkers, and colorants make up the remainder; ratios selected based on shore hardness and expansion needs

Downstream process integration

• Granulation and masterbatch blending before foam molding
• Molding via injection or compression at 120–160°C
• On-line density and hardness QC for every production lot
• Direct cutting or die-punching for custom insoles and sole units

Final product types

• Sports shoe midsoles and outsoles
• Safety footwear slip-resistant soles
• Children’s foam sandals and slippers
• Custom orthopedic insoles

5. Cable and Wire Insulation Compounds

Cable compound manufacturers formulate our EVA for use in low-voltage and telecommunication insulation and jacketing. EVA’s balance of flexibility, dielectric performance, and flame resistance enables compliance with international cable norms. Compounding lines blend this resin with specified flame retardants, stabilizers, and anti-drip agents, with extrusion and irradiation processes closely monitored for gel content and insulation uniformity. Testing for volume resistivity, elongation, and flame test values is batch-specific before shipment to cable assemblers.

Industry compliance standards

• UL 1581 Reference Standard for Electrical Wires, Cables
• IEC 60502-1 for Power Cables with Extruded Insulation
• EN 50363 for Insulating and Sheathing Compounds
• RoHS 2011/65/EU for Heavy Metal-free Formulation

Typical usage ratio

• Primary compound at 45-75% EVA, with 15-30% flame retardant, balance with plasticizers and performance additives; adjusted for cable type and thickness

Downstream process integration

• Dry blending with ATH and synergists for halogen-free compounds
• Extrusion coating onto copper or aluminum core
• Irradiation crosslinking for enhanced thermal properties in heat resistant cables
• Spooling, spark testing, and insulation thickness verification

Final product types

• Low-voltage power cable insulation
• Communication cable jackets
• Instrument and signal cable sheathing
• Halogen-free flame retardant cable compounds

6. Toys and Recreational Goods Foaming

Toy and sporting goods manufacturers select this material for compliant foamed toy parts, sports protectors, and craft blocks, due to its non-toxic formulation, softness, and high process stability. Processing facilities enforce tight control over blowing agents and pigments, using extrusion and batch foaming equipment. In-house and third-party labs verify compliance with international toy safety and migration requirements, ensuring end products are child-safe and durable.

Industry compliance standards

• EN 71 Safety of Toys (Parts 3 & 9 for chemical migration and organics)
• ASTM F963 Standard Consumer Safety Specification for Toy Safety
• REACH Annex XVII for restricted substances in children’s products
• ISO 8124 for Mechanical and Physical Properties

Typical usage ratio

• Polymer phase 65-88% of foamed formulations, depending on density and softness required; blowing agent 2-8%, pigment and color additive 0.5-2%

Downstream process integration

• Premixing, foaming extrusion or batch expansion under ISO 9001-certified protocols
• Molding or die-cutting into shaped foam articles
• Washing and surface post-treatment for migration safety
• Routine migration lab analysis for phthalate and heavy metal compliance

Final product types

• Children’s foamed mats and puzzle blocks
• Protective sport equipment padding
• Soft-foam educational toys
• Foamed water sports accessories (kickboards, float aids)