Applications of Mitsui Chemicals Evaflex EV410 EVA in Industrial Manufacturing

Mitsui Chemicals’ Evaflex EV410 EVA resin offers precise melt flow and high vinyl acetate content, supporting demanding industrial production chains in flexible film, cable, footwear, solar encapsulation, and hot melt adhesive manufacturing. As a direct producer, we supply this grade to critical processes requiring reliable raw material characteristics and batch-to-batch consistency.

1. Photovoltaic Encapsulant Film Production

Solar module manufacturers apply EV410 EVA for its reliable adhesion, flexibility, and process stability in encapsulant film lamination. Our customers use this grade to optimize the crosslinking profile and maintain transparency during prolonged UV exposure. The precise vinyl acetate content allows film extruders to meet strict cell encapsulation criteria set by global PV quality programs and maintain panel performance under variable climates.

Industry compliance standards

• IEC 61215 (Crystalline silicon terrestrial PV modules)
• UL 1703 and UL 61730 (Electrical safety and performance for PV modules)
• TÜV Rheinland 2 PfG 1162/10.07 (Encapsulant qualification)
• RoHS Directive (Restriction of Hazardous Substances)

Typical usage ratio

• 55–75% EVA content per film formulation, adjusted by degree of crosslinking, target lamination thickness, and solar module design

Downstream process integration

• Used in film extrusion as the primary polymer; functional and crosslinking additives are added before melt casting or calendering; lamination occurs between photovoltaic cells and glass under vacuum and elevated temperature

Final product types

• PVC- and lead-free solar encapsulant films
• Backsheet-integrated encapsulant films
• Photovoltaic modules for residential and industrial solar panels
• Bifacial or high-transparency PV modules

2. Wire and Cable Compound Manufacturing

EV410 EVA is incorporated by cable compounders seeking high flexibility and improved electrical insulation in low voltage and automotive wire sheathing. Its balanced melt flow supports filling and wetting of mineral flame retardants while ensuring smooth surface finish and low gel content after extrusion. The use of this grade helps converters ensure conformance to stringent toxicity and fire performance certifications for indoor, automotive, and public infrastructure cables.

Industry compliance standards

• UL 1581 (Electrical wires, cables, and flexible cords)
• EN 50363-2-2 (Insulating compounds based on EVA for cables)
• IEC 60332 (Flame retardance for wires and cables)
• REACH Regulation (EC 1907/2006) (SVHC and phthalate limits in cable materials)

Typical usage ratio

• 30–45% EVA per compound, tailored with flame retardants, plasticizers, and stabilizers; ratio changes by required elongation-at-break and fire resistance level

Downstream process integration

• Blended with Aluminum Trihydrate (ATH) and antioxidants in pre-mixers prior to compounding extrusion; pelletized compound is fed to cable extrusion lines to produce insulation and sheathing layers

Final product types

• Low voltage power cables
• Automotive wire insulation
• Flexible appliance cords
• Data and telecommunication cables

3. Footwear Foaming and Injection Molding

Footwear manufacturers utilize EV410 EVA to deliver lightweight, abrasion-resistant midsoles for running shoes, sandals, and safety footwear. The high vinyl acetate level achieves controlled cell morphology and rebound in injection and compression foaming. Consistent melt characteristics also allow for optimal dispersion of blowing agents and pigments. Leading shoe makers rely on this grade to comply with international footwear safety, chemical, and phthalate content regulations.

Industry compliance standards

• EN ISO 20345 (Safety footwear)
• OEKO-TEX® Standard 100 (Textiles and leathers – hazardous substance control)
• REACH Regulation (Annex XVII on PAHs and plasticizers)
• CPSIA (Consumer Product Safety Improvement Act – for children’s shoes in the US)

Typical usage ratio

• 60–95% of total formulation as base polymer, adjusted with fillers, crosslinkers, and foaming agents based on density and hardness targets for different shoe segments

Downstream process integration

• Melt-blended with auxiliary additives in batch mixers; injection or compression molding is performed under controlled pressure and temperature for foaming and shaping shoe midsoles and outsoles

Final product types

• Lightweight midsoles and outsoles for sports footwear
• Work and safety shoe shock-absorbing soles
• Children’s and fashion sandals
• Household EVA foam slippers

4. Flexible Packaging and Film Extrusion

Converters in the packaging sector select EV410 EVA to manufacture heat seal layers and specialty flexible films that require strong sealing, puncture resistance, and clarity. It enables co-extrusion with polyolefins for modified atmospheric and peelable lidding films. Its controlled low-temperature sealing response supports packaging lines seeking to avoid product deformation and improve throughput speed, while meeting stringent food contact safety requirements in major export markets.

Industry compliance standards

• FDA 21 CFR 177.1350 (EVA polymers for food packaging films, USA)
• EU Regulation 10/2011 (Plastic materials and articles intended to come into contact with food)
• Japan Food Sanitation Act Article 18 (Food contact polymer safety)
• GMP Regulation (EC) No 2023/2006 (Manufacture of packaging materials)

Typical usage ratio

• 10–35% as blend partner with LDPE/LLDPE, or as the main heat seal layer in 3–10% of multilayer film structure; actual ratio set by target sealing temperature and flexibility

Downstream process integration

• Directly loaded in blown film or cast film extruders; applied as a sealing or adhesion layer in multilayer film lamination; post-extrusion treatment includes corona discharge before printing and conversion

Final product types

• Vacuum pouches for meat and dairy
• Retortable food packaging films
• Peelable lidding films for trays
• Medical device flexible pouches

5. Hot Melt Adhesive (HMA) Manufacturing

Adhesive compounders prefer EV410 EVA for its balanced melt viscosity and open time, making it suitable for construction, packaging, and hygiene hot melt adhesives. The consistent polymer structure allows stable formulation with hydrocarbon resins and plasticizers. Manufacturers control bond strength and flexibility by adjusting vinyl acetate content and formulating for compliance with international packaging, hygiene, and consumer safety certification demands.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives for indirect food contact)
• ISO 9001:2015 (Quality management systems for adhesive plants)
• GMP Regulation (EC) No 2023/2006 (Adhesives for food packaging)
• China GB 9685-2016 (Safety of adhesives in food contact)

Typical usage ratio

• 35–60% as base polymer in hot melt formulations; resin, wax, and plasticizer levels set by viscosity and tack requirements for carton sealing, bookbinding, or non-woven assembly

Downstream process integration

• Fed to melt kettles and batch mixers with tackifiers and stabilizers; extrusion and pelletizing into HMA granules or direct filling into hot melt drum systems for bulk adhesives

Final product types

• Carton and case sealing hot melt sticks and pellets
• Bookbinding adhesives
• Medical and hygiene adhesive films (e.g., diaper construction)
• Packaging tape base adhesives