Applications of Mitsui Chemicals Evaflex EV560 EVA in Industrial Manufacturing

Mitsui Chemicals manufactures Evaflex EV560 EVA to deliver consistent, high-purity performance across specialized industrial markets. We supply this grade primarily to sectors requiring reliable melt processing, precise formulation control, and strict adherence to industry-specific regulatory systems. Below are core downstream applications supported with technical insights into standards, compounding, manufacturing integration, and the final products achieved by our direct industrial partners.

1. Solar Photovoltaic Encapsulation Films

Leading solar module producers select EV560 EVA for extrusion-cast encapsulant films that require durable light transmission, UV stability, and minimal shrinkage. Our material meets quality thresholds for lamination stability and electrical insulation in both crystalline silicon and thin-film module assemblies. The resin integrates into co-extrusion or monolayer film lines, supporting in-line degassing and cross-linking where required by module design. Adherence to module durability and weathering resistance mandates rigorous raw material control through every batch supplied to solar industry converters.

Industry compliance standards

• IEC 61215: Terrestrial photovoltaic (PV) modules – Design qualification and type approval
• UL 1703: Flat-Plate Photovoltaic Modules and Panels
• RoHS Directive 2011/65/EU for hazardous substances restrictions
• IEC 61730: PV module safety qualification

Typical usage ratio

• 95–100% base polymer, adjusted up to 5% stabilizer, cross-linking promoter, and anti-block agent by module specification. Higher vinyl acetate content impacts gel ratio and melt strength—PV formulators often benchmark against reference module standards.

Downstream process integration

• Direct extrusion into film sheet between 0.4–0.6 mm thickness.
• In-line roll calendaring and edge-trimming.
• Thermal cross-linking during module lamination between glass substrates in automated module assembly lines.

Final product types

• PV module encapsulation films for rooftop, utility, and building-integrated photovoltaics (BIPV)
• Rear side encapsulant for bifacial solar panels
• Custom-shaped encapsulant film rolls for specialty glass-glass modules
• Encapsulant sheet used in R&D for innovative solar cell architectures

2. Hot Melt Adhesives for Packaging and Bookbinding

Adhesive compounders incorporate EV560 EVA as the fundamental polymer backbone in hot melt adhesive (HMA) systems where balanced melt viscosity, flexibility at low temperature, and strong tack define application window. The material supports automated glue line deposition in packaging, case and carton sealing, and high-speed bookbinding. Compatibility with tackifying resins, waxes, and plasticizers allows tailored tack performance while complying with consumer packaging safety standards. Quality assurance includes gel level assessment for extrusion pumpability and bond strength retention under dynamic loads.

Industry compliance standards

• FDA 21 CFR 175.105: Adhesives for indirect food contact
• REACH Regulation (EC) No 1907/2006 chemical safety compliance
• EN 923: Packaging – Adhesive terminology and test methods
• ISO 9001: Quality management system for adhesive manufacturing

Typical usage ratio

• 25%–55% EVA in base composition, with remainder as tackifier, wax, and stabilizer. Ratio adjusted based on open time, set time, substrate absorbency, and specific thermal stability target for end use.

Downstream process integration

• Feedstock into high-shear melt blending and extrusion granulation of adhesive pellets.
• Continuous melt supply in slot or swirl application heads for carton closing or spine-gluing stations.
• In-line monitoring of viscosity, tack temperature, and stringiness for quality control.

Final product types

• Hot melt glue sticks (industrial and manual)
• Case, carton, and tray sealing adhesives for food and consumer goods packaging
• Perfect binding adhesives for commercial book production
• Pneumatically dispensed adhesives for paperboard conversion and box forming

3. Footwear Midsoles and Outsoles

Shoe component molders select this grade for closed-cell midsoles and flexible outsoles where shock absorption, compression set, and slip resistance are required. Direct foam injection molding enables rapid cycle times and consistent cell morphology. Formulators fine-tune blend ratios with cross-linking agents, blowing agents, and process additives to meet footwear standards for durability and safety. Batch traceability and QC are embedded throughout, as demand from athletic, children’s, or industrial footwear demands consistent gelling and resilience profiles per end-use certification.

Industry compliance standards

• ISO 20344: Personal protective equipment – Footwear testing methods
• GB/T 15107-2013: Sports shoes technical requirements (China)
• REACH Annex XVII: Restricted Substances for consumer products

Typical usage ratio

• EVA content typically 65–75% by weight, depending on density and hardness requirement. Up to 10% cross-linking system, 15–20% blowing agent, 2–5% color and process modifiers. End product target density and cell structure drive formula selection for different footwear lines.

Downstream process integration

• Batch or continuous compounding followed by direct foaming injection into alumina or steel molds.
• Curing in heated presses for complete cross-linking and expansion.
• Demolding and trim operations fed into finishing and QC for dimensional accuracy and mechanical integrity.

Final product types

• Sports shoe midsoles for running and training footwear
• Lightweight outsoles for lifestyle and children’s shoes
• Work boot comfort inserts and anti-fatigue matting
• Orthopedic support base layers in custom-molded insoles

4. Wire and Cable Insulation Compounds

Cable compounders use our resin in flame-retardant and low-smoke insulation and jacketing systems for wires and cables requiring mechanical flexibility and long-term dielectric properties. Suitable for electrical installations in construction, automotive, and consumer electronics, this grade achieves fine dispersion of flame retardants and ease of extrusion under high-throughput conditions. Insulation systems comply with fire safety and migration limits for volatile additives. Batch production and technical service ensure color, wall thickness, and elongation thresholds are rigorously controlled throughout cable compounding and extrusion processes.

Industry compliance standards

• UL 1581: Reference Standard for Electrical Wires, Cables, and Flexible Cords
• IEC 60332: Tests on electric and optical fibre cables under fire conditions
• RoHS Directive 2011/65/EU for lead and phthalate-free requirements
• EN 50363: Insulating, sheathing, and bedding materials specifications

Typical usage ratio

• 45–70% EVA, adjusted for flame retardancy, flexibility, and required dielectric strength. Up to 35% flame retardant (e.g., ATH), 3–8% process aid, and pigment as per cable color standard.

Downstream process integration

• Feedstock for continuous compounding with flame retardants and other additives in twin-screw extruders.
• Granule product supplied to high-speed extrusion lines for direct wire or cable coating.
• Online quality checks for wall thickness and spark test performance.

Final product types

• Electrical cable insulation for residential and commercial wiring
• Instrumentation and control cable jacketing
• Automotive low-voltage wire coatings
• Low smoke, halogen-free power cable jackets

5. Flexible Film and Sheet for Food Packaging

Food contact packaging converters employ EV560 EVA as a primary component in coextruded film for flexible pouch, bag, and lid stock. The resin provides enhanced sealability over a broad temperature window, improved puncture resistance, and clarity for point-of-sale packaging. Advanced multilayer extrusion lines use the material in sealing layers or as tie resins in lamination with polyolefins or barrier films. Every lot undergoes migration, organoleptic, and residual solvent testing in line with international food safety guidelines. Technical support assists in fine-tuning gloss, gauge, and heat-seal performance for diverse food product applications.

Industry compliance standards

• FDA 21 CFR 177.1350: EVA copolymer for food contact applications
• Regulation (EU) No 10/2011 for plastic food contact materials
• GB 9685: Hygienic standards for use of additives in food containers and packaging materials (China)
• ISO 22000: Food safety management system during film production

Typical usage ratio

• Range from 10%–30% in coextruded multilayer films, and up to 60% for mono-sealant layers. Ratio dependent on end-use seal strength, abuse resistance, and clarity requirements. Laminators adjust for barrier resins or print-receptive blends.

Downstream process integration

• Direct dosing into multilayer blown film or cast film extruders.
• In-line corona or plasma treatment prior to lamination or printing.
• Heat-seal and pouch conversion stations after film winding.

Final product types

• Vacuum pouches and lidding films for ready meals and fresh foods
• Flexible bag stock for frozen, dairy, and snack packaging
• Lamination seal layers in retortable and modified atmosphere packaging (MAP)
• Portion pack films for dry food sachets and condiments