Applications of Versalis Greenflex HN 70 EVA in Industrial Manufacturing

Versalis Greenflex HN 70 EVA supports performance and processing efficiency across multiple industrial sectors. As the manufacturer, we closely monitor formulation, process compatibility, and compliance requirements throughout downstream integration. Below we detail real-world application segments, referencing relevant usage ratios, standards, process points, and end product types.

1. Wire and Cable Insulation Compounding

Cable manufacturers utilize EVA for its flexibility, electrical insulation, and resistance to environmental stress cracking. Greenflex HN 70 EVA enters jacketing and sheathing formulations for both power and communication cables, where heat aging and dielectric strength are essential quality parameters. Industrial processes often combine it with specific antioxidants and crosslinking agents. End customers in the energy, automotive, and telecom segments demand consistent compound quality for compliance with both local and international standards.

Industry compliance standards

• UL 62 and UL 1581 (Wire and Flexible Cord Standards)
• IEC 60502-1 (Extruded Insulation Power Cables)
• RoHS Directive 2011/65/EU
• REACH Regulation (EC) No 1907/2006

Typical usage ratio

• Ranges from 15% to 45% of the insulation or jacket compound depending on required dielectric and flexibility properties; adjusted based on cable type (low or medium voltage, purpose-specific)

Downstream process integration

• Introduced in the premix stage during compounding with fillers, stabilizers, and crosslinking agents, before direct extrusion onto copper or aluminum conductors

Final product types

• Electrical wire insulation
• Power cable jacketing
• Data and telecom cable sheathing
• Automotive wiring harnesses

2. Photovoltaic Encapsulant Sheet Production

Downstream solar module manufacturers require EVA grades that reliably encapsulate photovoltaic cells, providing optical clarity, long-term weatherability, and strong adhesion to glass and backsheet material. We support PV sheet producers with batch consistency and control over vinyl acetate content, which directly impacts cell protection and module performance. Laminators process EVA sheets under controlled pressure and temperature profiles to optimize EVA crosslinking and ensure stable cell encapsulation.

Industry compliance standards

• IEC 61215 (Crystalline Silicon Terrestrial Photovoltaic Modules – Design Qualification)
• IEC 61730 (Photovoltaic Module Safety Qualification)
• UL 1703 (Flat-Plate Photovoltaic Modules and Panels)
• ISO 9001:2015 Quality Management for Manufacturing Facilities

Typical usage ratio

• Encapsulant layer thickness targeted at 0.4-0.6 mm, with EVA representing 100% of sheet substrate, occasionally blended 2-10% with curing additives or process aids

Downstream process integration

• Fed directly to film extrusion lines for sheet production, with subsequent slitting and lamination onto photovoltaic cells before heat-induced crosslinking in module assembly

Final product types

• PV encapsulant sheets
• Monocrystalline and polycrystalline solar panels
• Building-integrated photovoltaics (BIPV) modules
• Flexible solar film laminates

3. Footwear and Athletic Sole Manufacturing

Footwear OEMs and component producers rely on EVA as a lightweight and cushioned foam base in midsoles and outsoles for sports, casual, and specialty shoes. This material enables fine-tuning of density, rebound, and flexibility through tailored compounding with blowing agents, pigments, and co-polymers. Our process control ensures melt index uniformity, supporting reliable sheet and injection molding operations. Final articles must meet both internal mechanical specifications and third-party chemical safety reviews, especially for export markets.

Industry compliance standards

• EN ISO 20344/20345 (Safety Footwear Testing and Requirements)
• REACH Regulation (EC) No 1907/2006 for restricted substances
• PROP 65 (California safe products for consumer goods)
• Global Recycled Standard (for applicable blends)

Typical usage ratio

• Constitutes 35% to 95% by weight of sole formulations; ratio decreases for dual-density applications with other thermoplastic polyolefins

Downstream process integration

• Processed in mixing extruders and foaming presses, with addition of cross-linkers and blowing agents; shaped via compression or injection molding into foam blocks or direct-molded soles

Final product types

• Sports shoe midsoles
• Slipper, sandal, and flip-flop outsoles
• Safety footwear core layers
• Children’s EVA foam shoes

4. Hot Melt Adhesive (HMA) Base Polymer

Major adhesive manufacturers incorporate EVA as the core polymer in the production of pressure-sensitive, packaging, and assembly adhesives, benefiting from its cohesive strength, flexibility, and compatibility with tackifiers and resins. Application areas range from carton sealing to bookbinding. Strict batch control is necessary to ensure predictable viscosity and thermal stability during downstream blending. HMAs must satisfy market-specific regulatory requirements for food contact and performance durability.

Industry compliance standards

• FDA CFR Title 21, §175.105 (Adhesives for Food Packaging)
• EU Regulation (EC) No 1935/2004 (Materials Intended for Food Contact)
• ASTM D1876 (Peel Resistance Testing)
• ISO 9001:2015 for manufacturer traceability

Typical usage ratio

• Principal formulation component, representing 25% to 65% by weight; adjusted based on open time, set time, and material compatibility required by the application

Downstream process integration

• Blended with tackifiers, waxes, and stabilizers in high-shear melting tanks, followed by filtration, cooling, and pellet or block formation for bulk supply to converter lines

Final product types

• Hot melt glue sticks and pellets
• Paper and board packaging adhesives
• Wood assembly adhesive sticks
• Textile lamination adhesives

5. Flexible Film and Packaging Extrusion

Food and non-food packaging converters use EVA as an impact modifier and sealing layer in extrusion blown film lines. It improves toughness, sealability, and puncture resistance in single- and multi-layer film laminates. The raw material’s processing window and clarity directly influence film stability and surface finish. Compliance with migration limits and traceability is crucial for high-speed filling and FFS (form-fill-seal) operations, especially in regulated packaging.

Industry compliance standards

• EU Regulation No 10/2011 (Plastic Materials for Food Contact)
• FDA CFR Title 21, §177.1350 (Ethylene-Vinyl Acetate Copolymer for Food Packaging)
• GMP EC No 2023/2006 (Good Manufacturing Practice for Materials Intended to Come Into Contact with Food)
• ISO 22000 (Food Safety Management for food packaging industry)

Typical usage ratio

• Ranges from 5% to 30% in film blends, depending on sealing strength, transparency, and flexibility targets for each film layer

Downstream process integration

• Metered into extruder hoppers alongside LDPE, LLDPE, or mLLDPE; functions as sealant core or modifier; processed via blown or cast film extrusion prior to lamination or printing steps

Final product types

• Food pouch inner layers
• Frozen food and dairy product bags
• Lamination and barrier film structures
• Flexible tube packaging

6. Toy and Educational Product Molding

EVA’s non-toxicity, softness, and process safety make it preferred for toy blocks, foam mats, and educational device components. Toy producers demand strict traceability on phthalate and heavy metal content, while foam converters rely on our material’s uniform foaming behavior to produce bright, stable colors and consistent dimensions. EVA enters the supply chain both as direct granules and as custom-formulated foam blends.

Industry compliance standards

• EN 71-3 (Migration of Certain Elements in Toys)
• ASTM F963 (Standard Consumer Safety Specification for Toy Safety)
• GB 6675 (Chinese Toy Safety Standard)
• CPSIA (Consumer Product Safety Improvement Act, USA)

Typical usage ratio

• 60% to 100% by weight depending on hardness, colorant addition, and foam density specifications for toys and play mats

Downstream process integration

• Formulated with foaming agents, pigments, and safety additives; processed through closed-mold foaming, die cutting for mats, or injection molding for shaped toys

Final product types

• Children’s play mats and tiles
• Foam toy blocks
• Bath and puzzle toys
• Protective padding for nursery products