Applications of Hanwha TotalEnergies 1316 EVA in Industrial Manufacturing

Hanwha TotalEnergies 1316 EVA (Ethylene Vinyl Acetate Copolymer) serves as a critical raw material across several precise downstream industrial sectors. Our EVA grade is designed for manufacturers seeking consistent melt flow, clarity, and elastic properties required for stringent production environments. Below we outline application-specific integration details, including mandated industry standards, practical formulation ranges, manufacturing process positions, and the types of finished goods resulting from industrial adoption.

1. Photovoltaic Encapsulant Films

In solar module manufacturing, leading encapsulant film producers rely on EVA 1316 to meet both optical and structural demands in multi-layer lamination. This resin supports high-transparency encapsulant films, ensuring efficient light transmission and extended module durability even under UV and weathering exposure. Manufacturers must balance vinyl acetate content and crosslinking agents to tune module performance and stability for utility-scale and rooftop installations.

Industry compliance standards

• IEC 61215:2016 (Crystalline Silicon Terrestrial PV Modules)
• IEC 61730:2016 (PV Module Safety Qualification)
• UL 1703 / UL 61730 (US & International module safety)
• RoHS Directive 2011/65/EU compliance

Typical usage ratio

• Used at 100% as the main polymer matrix for encapsulant film extrusion; crosslinking agent added at 2–4 phr for cure control
• Formulation may adjust up to 10% for processability or local specifications (e.g., PID resistance, anti-UV), within vendor technical parameters

Downstream process integration

• Directly melted and fed into cast or blown extrusion lines to produce films 0.3–0.8 mm thick
• Laminates applied between glass and solar cells then subjected to thermal crosslinking under vacuum during module assembly

Final product types

• Pilot and mass-production photovoltaic panels (monocrystalline, polycrystalline, thin-film)
• BIPV architectural glass laminates
• Flexible and portable solar modules

2. Hot Melt Adhesives for Packaging and Bookbinding

Downstream manufacturers formulate hot-melt adhesives using this EVA to achieve the required adhesion balance and bonding strength for diverse substrates, such as coated and uncoated papers or laminates. 1316’s melt flow index supports stable spray, bead, and slot die application, while its thermal stability enables consistent pot life and minimal charring in high-throughput environments. EVA is carefully blended with tackifiers, waxes, and stabilizers based on end-use demands and regulatory audits.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives for food packaging indirect contact)
• REACH Regulation (EC) No. 1907/2006 for chemical registration
• ASTM D1876 (Peel Resistance of Adhesives)
• EN 923:2015 (Adhesives—Terminology and definitions)

Typical usage ratio

• Comprises 28–45% of total hot-melt formulation for case sealing adhesives, depending on bonding substrate and open time requirements
• Bookbinding glues typically use 40–55% EVA to optimize flexibility and page pull strength, adjusted for regional regulatory needs

Downstream process integration

• Fed into hot-melt mixers or single-screw extruders with melting zones 120–170°C
• Hot-melt directly applied to packaging lines, book spine gluing units, or other substrate bonding stations

Final product types

• Consumer and industrial packaging (corrugated cases, cartons, paper bags)
• Hardcover and softcover books (spine adhesives)
• Labelling and laminating adhesives

3. Wire & Cable Insulation Compounds

The cable industry utilizes this EVA for low-voltage wire and cable jacketing, capitalizing on its dielectric strength and flexibility. Formulators combine it with flame retardants and stabilizers to ensure performance in electrical insulation and sheath materials, complying with sector-specific flammability and smoke emission standards. Strict control of resin batch and compounding parameters ensures reproducible processing across CV lines and extrusion dies.

Industry compliance standards

• UL 62 and UL 1581 (Flexible Cords & Wires)
• IEC 60502-1 (Power Cables with extruded insulation and their accessories)
• EN 50363-0 (Insulating, sheathing and bedding compounds)
• RoHS and REACH chemical restrictions

Typical usage ratio

• Comprises 60–85% of insulation compound by weight, balanced with flame retarding fillers (ATH), plasticizers, and processing aids
• Exact percentage chosen according to fire class and mechanical property requirements

Downstream process integration

• Blended in Banbury or Buss compounders, then pelletized to ensure uniformity
• Extruded onto conductors using single or twin-screw extruders at 140–180°C die temperature

Final product types

• Low voltage building wires
• Flexible appliance cords
• Cable sheathing for automotive and household wiring

4. Footwear Injection Molding (EVA Foam Soles and Midsoles)

Footwear manufacturers depend on this EVA in foam injection and compression molding for shoe soles and midsoles, exploiting its shock-absorbing, lightweight, and flexible properties. By carefully formulating with blowing agents and crosslinkers, producers tailor expansion ratios, hardness, and rebound for differing athletic, casual, and safety shoe lines while observing international and local material safety mandates.

Industry compliance standards

• ISO 20871:2018 (Footwear—Test methods for outsoles)
• OEKO-TEX® Standard 100 (Textile and footwear raw material safety)
• EN 20345 (Safety, protective and occupational footwear)
• REACH Annex XVII (Restricted substances)

Typical usage ratio

• Typically 55–75% of the compound for midsole and outsole foams, with ratio adjusted for density and expansion factors (per type: sports, children’s, work boots)
• Blowing agent content varied 5–15 phr for closed-cell ratios, directly impacting physical performance

Downstream process integration

• Compounded into pellets and introduced to injection or compression molding machines at 140–180°C
• Crosslinking and foaming initiated in-mold to achieve final density and mechanical features

Final product types

• Performance sneaker midsoles
• Sandals, slippers, and lightweight outsole units
• Antistatic safety shoe soles

5. Flexible Film and Sheet for Food Contact Packaging

This EVA grade forms a core resin for multilayer flexible food packaging, valued for its sealing, toughness, and cold temperature crack resistance. Downstream converters use it in coextrusion with LDPE and barrier layers to address specific shelf-life and migration requirements, optimizing package integrity for refrigerated and frozen contents. Food producers require robust MSDS and batch traceability as part of supplier qualification.

Industry compliance standards

• FDA 21 CFR 177.1350 (Ethylene-vinyl acetate copolymers: indirect food contact)
• EU Regulation (EU) No. 10/2011 (Plastic materials for food contact)
• Japanese Food Sanitation Act
• GMP Regulation (EC) No. 2023/2006 (Good Manufacturing Practice for FCM)

Typical usage ratio

• Used at 10–25% by weight in multilayer blown film or cast film structures, tailored for heat-sealing or specific flexibility targets
• In laminates, EVA may form up to 100% of the sealant layer for peelable or easy-open packs

Downstream process integration

• Gravity metered into coextrusion hoppers for blown or cast film production (operating at 130–190°C)
• Film drawn and cooled, slit or laminated for conversion into pouches, bags, or lidstock

Final product types

• Frozen food packaging bags
• Peelable lidding films for dairy or ready meals
• Stick-pack sachets for condiments or single-serve applications