Applications of Hanwha TotalEnergies 2051 EVA in Industrial Manufacturing

Hanwha TotalEnergies 2051 EVA is a copolymer resin widely recognized for its technical consistency and performance in demanding industrial applications. As a manufacturer, we enable downstream producers in various sectors to enhance formulation precision, processing efficiency, and product reliability by integrating this material into their fabrication workflows. Below, we present specialized application cases and precise operational frames for several key downstream industries.

1. Photovoltaic Encapsulant Film Production

2051 EVA plays a critical role in the creation of encapsulant sheets used in solar module lamination. Its controlled vinyl acetate content and melt index enable consistent extrusion while minimizing shrinkage and bubble formation during the vacuum lamination cycle. The material supports strong light transmittance and environmental durability, which is essential for long-term solar panel performance in varied climates. Its use aligns with the high reliability required by photovoltaic manufacturers and meets rigorous module testing protocols.

Industry compliance standards

• IEC 61215 / IEC 61730 (Crystalline Silicon Terrestrial Photovoltaic Modules)
• UL 1703 (Standard for Flat-Plate Photovoltaic Modules and Panels, North America)
• JIS C 8918 (Japan Standard for PV Modules)
• RoHS Directive (2011/65/EU) compliance for lead-free requirements

Typical usage ratio

• Constitutes 95–98% of total encapsulant film mass; balance may include UV blockers or curing agents depending on transparency and cross-linking needs

Downstream process integration

• Direct feeding into twin-screw extruder for pellet melting
• Calendaring or flat-sheet extrusion for film formation
• Roll slitting and precision die-cutting before module lamination
• Film is laminated to silicon cells under heat and vacuum (145–155°C, 10–20 min cycle)

Final product types

• Perc/Mono/Poly PV module encapsulant sheets
• Double-glass module laminates
• BIPV (Building-integrated photovoltaics) films
• Backsheet adhesive layers for advanced module stacks

2. Hot Melt Adhesive Manufacture

This EVA is a critical base resin for formulating hot melt adhesives used in assembly, packaging, and bookbinding. Its melt flow and flexibility profile allow adhesive compounding with tackifiers, waxes, and stabilizers, supporting consistent open time and adhesion across a broad service temperature range. Detailed molecular weight and co-monomer specification permit fine-tuning of bond strength and heat resistance in industrial adhesive lines.

Industry compliance standards

• FDA 21 CFR 175.105 for indirect food contact adhesives
• EN 923:2015+A1 (Adhesives – Terms and definitions)
• REACH EC 1907/2006 compliance (no SVHC presence)
• ISO 9001:2015 approved production batches traceability

Typical usage ratio

• 40–65% of standard adhesive mass; modified depending on pressure-sensitive or fast-setting application

Downstream process integration

• Pre-mixed with tackifiers and plasticizing oils in heated sigma blade mixers
• Fed into extruder, then pelletized, flaked, or slabbed for further compounding
• Processed into final form (sticks, pellets, pillows) for end-user application via hot glue lines

Final product types

• Hot melt glue sticks for DIY and industrial use
• Case and carton sealing adhesive pellets
• Bookbinding adhesives
• Nonwoven hygiene assembly adhesives (diaper, feminine care)

3. Footwear Foam Injection and Molding

In EVA foam fabrication for midsoles, insoles, and full outsole units, 2051 grade ensures durability and comfort via controlled cell structure and mechanical resilience. Its formulated pellets allow for precise mixing with blowing agents and crosslinkers, giving footwear producers quality control over density, recovery, and cushioning properties. The resulting foamed products consistently pass dynamic flex and abrasion testing required in mass footwear production.

Industry compliance standards

• EN ISO 20344:2021 (footwear personal protective testing methods)
• GB/T 15107-2013 (Chinese sports footwear technical specification)
• California Proposition 65 compliance (no banned phthalates or heavy metals)
• REACH Annex XVII restricted substances compliance

Typical usage ratio

• 60–80% by weight in foam compounds; balance typically azodicarbonamide blowing agent, crosslinking agent, and fillers to tune resilience/softness

Downstream process integration

• Weighing and dry blending with foaming additives
• Feeding to compression or injection molding machines
• In-mold foaming at 160–180°C for closed-cell structure control
• Press cooling and demolding followed by CNC trimming and final quality inspection

Final product types

• Sports shoe midsoles and insoles
• Lightweight EVA slipper soles
• Work boot and safety shoe cushioning units
• Children’s molded sandals and clogs

4. Wire and Cable Compounding

As a primary base resin in insulation and sheathing for low- and medium-voltage cables, 2051 grade enables smooth extrusion, strong dielectric properties, and environmental crack resistance. Its melt stability supports uniform wall thicknesses and controlled crosslinking for safe, flexible cable products. Strictly controlled compounding with stabilizers and flame retardants meets electrical and flame safety codes in critical infrastructure.

Industry compliance standards

• IEC 60502-1 (Power cables with extruded insulation)
• UL 1581 (Electrical wires, cables, and flexible cords)
• RoHS Directive 2011/65/EU for electrical equipment
• ISO 9001 traceability on compounding and finished lot

Typical usage ratio

• Base resin content from 55–80% in insulation compound; variation depends on flame retardant or filler loading

Downstream process integration

• Dry blending with antioxidants, UV inhibitors, and flame retardants
• Fed to continuous screw extruder, followed by crosslinking (optional via silane or peroxide system)
• Direct extrusion onto metallic wire core, followed by water bath quenching and surface inspection

Final product types

• Low voltage building wires
• Flexible appliance cables
• Instrumentation wire insulation
• Irrigation/power cable jacketing for outdoor use

5. Flexible Packaging Film and Sheet

In the production of multilayer food and medical packaging, 2051 EVA is used as a sealing or adhesive layer to impart clarity, puncture resistance, and low-seal temperature capability. Its compatibility with polyethylene and PE copolymers enables co-extrusion for high integrity and peelable sealing across a range of sterilization methods. Food contact conformity and batch traceability align with international packaging safety requirements.

Industry compliance standards

• FDA 21 CFR 177.1350 for ethylene-vinyl acetate copolymer food contact use
• EU Regulation (EU) No 10/2011 for plastic food contact materials
• GB 9685-2016 (Chinese National Standard for Additives in FCM)
• BRCGS Global Standard for Packaging Materials (Issue 6)

Typical usage ratio

• 10–40% as an adhesion/sealant layer in multilayer construction; ratio varies by peel characteristic and sealing requirements

Downstream process integration

• Fed into gravity blenders with PE and barrier resins
• Co-extruded through blown film or cast film lines
• Online thickness gauge and corona/anti-block treatments prior to winding
• Conversion to rolls, bags, or lidding webs by slitting and die-cutting

Final product types

• Easy-peel food trays and lids
• Boil-in-bag and retort pouch films
• IV fluid and blood bag sheet materials
• Sealable medical device wrap films