Applications of Mitsui Chemicals Evaflex 220 EVA in Industrial Manufacturing

Mitsui Chemicals Evaflex 220 EVA has established its position as a specialty copolymer resin in a range of technically demanding industrial sectors. Downstream manufacturers rely on this material's controlled melt flow, transparency, and flexibility to deliver specification-driven outcomes in applications where process reliability, product consistency, and regulatory compliance are paramount. Below we detail its main industrial uses, addressing sector-specific requirements and formulation approaches.

1. Photovoltaic Module Encapsulation

Producers of solar panels use this grade in lamination processes to provide long-term adhesion and durable encapsulation of photovoltaic cells. The material contributes clarity and elasticity, critical for both light transmission and mechanical shock resilience during decades of field exposure. Processing mandates strict thermal and chemical conformity to maintain energy output and module life.

Industry compliance standards

• IEC 61215 (Crystalline silicon terrestrial PV modules – Design qualification and type approval)
• UL 1703 (Standard for safety: Flat-Plate Photovoltaic Modules and Panels)
• TÜV Rheinland 2PfG 1162/08.2007 (Encapsulation Materials for PV Modules)
• RoHS Directive (2011/65/EU)

Typical usage ratio

• Composition in cell lamination sheet: 85–95% EVA, with formulation adjustments based on solar cell and backsheet compatibility or specific climatic zone UV exposure depth.

Downstream process integration

• Film extrusion or calendering; material loaded directly into extrusion lines for sheet formation, then cut-to-size and stacked with solar cells during vacuum lamination at 140–155°C under defined pressure/time cycles.

Final product types

• Photovoltaic module encapsulant sheets
• Flexible solar panel assemblies
• BIPV (Building Integrated Photovoltaic) glass interlayers
• Back-contact module matrices

2. Hot Melt Adhesive Formulation

Manufacturers of industrial adhesives blend this material as a backbone resin in pressure-sensitive and structural hot melt applications. Its excellent tack, heat seal strength, and compatibility with tackifying resins facilitate fast-setting adhesives used in high-throughput production lines for automotive, packaging, and woodworking sectors.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives for food contact packaging applications, where applicable)
• EN 923 (Adhesives – Terms and definitions)
• REACH Annex XVII (Regulation on restriction of hazardous substances in adhesives)
• ISO 9001:2015 (Quality management in adhesive manufacture)

Typical usage ratio

• Content in hot melt base: 25–50% by mass, modulated according to required open time, viscosity, and specific compatibility with waxes, resins, or plasticizers in end-use formulation.

Downstream process integration

• Direct blending in heated reactors; the resin is pelletized and fed to high-shear mixers with tackifiers, waxes, and additives, then extruded and pelletized for use in hot melt glue sticks or bulk adhesive blocks.

Final product types

• Hot melt glue sticks for automated packaging
• Pressure-sensitive adhesive (PSA) coatings for labels
• Hygiene adhesives for diaper and medical pad assembly
• Furniture edge-banding adhesives

3. Footwear Soling and Midsole Compounds

Shoe component manufacturers exploit the high vinly acetate content and good processability for producing lightweight, flexible midsole foams and soling compounds. The polymer’s cushioning response and durable flexibility meet the repetitive impact stresses found in athletic and safety footwear, while maintaining dimensional stability through repeated compression cycles.

Industry compliance standards

• ISO 20871 (Footwear – Outsoles, test methods for abrasion resistance)
• GB/T 15107-2013 (China National Standard – EVA Foam Physical Properties)
• REACH Regulation (SVHC compliance for articles in contact with skin)
• OEKO-TEX® Standard 100 (Restricted substances in footwear)

Typical usage ratio

• In foam midsole compounds: 60–90% EVA, tailored as per density, shore hardness, and expansion demands adjustment with blowing agent and crosslinker proportions.

Downstream process integration

• Dry blending of resin pellets with foaming agents, colorants, and UV stabilizers followed by direct injection molding or compression foaming; material undergoes crosslinking and expansion reactions during mold heating cycles.

Final product types

• Running shoe midsoles and cushioning pads
• Orthopedic insole sheets
• Safety shoe soling
• Children’s waterproof sandal soles

4. Wire and Cable Insulation Compounds

Wire and cable manufacturers incorporate this material in flexible insulation and jacketing for low- and medium-voltage cables. Processors value its dielectric performance, low-temperature flexibility, and flame retardant compatibility, enabling safe insulation for industrial wiring, automotive harnesses, and consumer electronics.

Industry compliance standards

• UL 62, UL 758 (Flexible cords and appliance wiring material)
• IEC 60245 (Rubber insulated cables – General requirements for flexible cables)
• RoHS Directive (Restriction of hazardous substances)
• CSA C22.2 (Canadian standard – Cables and wires for electronic equipment)

Typical usage ratio

• In cable insulation compound: 35–65% base resin content, with final ratio dictated by required mechanical properties, specific flame retardant types and loadings, and end-use certification pathway.

Downstream process integration

• The resin is compounded in twin-screw extruders with inorganic fillers (such as ATH), flame retardants, plasticizers, and colorants, then directly extruded as insulation or jacketing over copper conductors under controlled melt temperatures to ensure uniform wall thickness and surface finish.

Final product types

• Flexible power cable jackets
• Automotive low-voltage wire sheathing
• Consumer USB cable sleeves
• Instrumentation wires in industrial automation

5. Flexible Film and Packaging Sheets

Producers of specialty packaging and flexible films choose this grade for its excellent clarity, sealability, and low-temperature performance. The material processes efficiently in multilayer co-extrusion for food, medical, and specialty industrial packaging, fulfilling stringent migration, transparency, and machinability specifications.

Industry compliance standards

• FDA 21 CFR 177.1350 (Ethylene-vinyl acetate copolymers in food contact applications)
• BfR XXI (German guidelines for contact with foodstuffs)
• EU Regulation 10/2011 (Plastics intended to come into contact with food)
• GMP Regulation (EC) No 2023/2006 (Good manufacturing practice for materials intended for food contact)

Typical usage ratio

• 15–40% in multilayer co-extruded structures, depending on layer function (seal, tie-layer, or oxygen barrier), packaging geometry, and desired sealing temperature window.

Downstream process integration

• Material is co-extruded with PE, PP, or barrier resins in blown film or cast film lines; added in granular form to gravimetric feeders, ensuring precise layer thickness control and subsequent orientation or sealing steps during film finishing.

Final product types

• Vacuum food pouches and lidding film
• Medical device blister packs
• Frozen-ready meal bags
• Shrink wrap for beverage multipacks

6. Toys and Infant Care Products Foam

Makers of children’s play mats, water toys, and safety foam parts employ this resin for foam extrusion and molding, combining softness with reliable tensile properties. Its low extractables, skin-contact safety, and process repeatability support compliance for regulated juvenile and nursery goods where physical and chemical safety remain under scrutiny.

Industry compliance standards

• EN 71-3 (Migration of certain elements in toys)
• ASTM F963 (Standard consumer safety specification for toy safety)
• ISO 8124-1 (Safety of toys – Mechanical and physical properties)
• REACH Regulation Annex XVII (Restriction of phthalates and SVHC)

Typical usage ratio

• 70–95% in foam recipes; proportion shifts with foaming agent, expansion factor, and density targets for play products versus infant accessories.

Downstream process integration

• Compound is batch blended with color masterbatch and foaming agent, melted and extruded or compression molded; crosslinked and expanded using heat, producing cushions or sheets with closed-cell structure and shaped by die cutting or secondary thermoforming.

Final product types

• Infant play mats and puzzle mats
• Pool noodles and aquatic floats
• Child-safe ball-pit balls
• Soft edge guards for nursery furnishings