Applications of Hanwha TotalEnergies 1326 EVA in Industrial Manufacturing

Hanwha TotalEnergies 1326 EVA is a specialty ethylene vinyl acetate copolymer designed for high-value manufacturing use. Our product supports downstream customers in precise applications where stable properties, compliance, and process performance are critical.

1. Solar Photovoltaic Encapsulants

Leading photovoltaic module manufacturers use our EVA 1326 as the primary encapsulant material in crystalline silicon and thin-film solar panels. Its melt flow characteristics and high vinyl acetate content ensure excellent optical transparency, moisture resistance, and strong adhesion between the glass, cell, and backsheet. Stringent film extrusion and lamination processes demand lot-to-lot consistency and traceability. The encapsulant’s crosslinking behavior can be customized for various weathering standards critical in solar power supply chains.

Industry compliance standards

• IEC 61215: Terrestrial photovoltaic (PV) modules – design qualification and type approval
• UL 1703: Standard for Flat-Plate Photovoltaic Modules and Panels
• RoHS Directive 2011/65/EU compliance
• REACH (EC 1907/2006) registration for polymer use

Typical usage ratio

• Encapsulant layers consume 380–500 g/m², constituting up to 85% of non-glass lamination mass
• Formulation can be adjusted for film thickness (0.40–0.50 mm) and cell geometry

Downstream process integration

• Pre-extrusion pellet drying is performed before sheet extrusion
• Co-extrusion or calendering into sheets
• Lamination under heat and vacuum between glass and solar cells
• Crosslinking phase initiates during module lamination cycle

Final product types

• Photovoltaic solar panels (mono and polycrystalline)
• Flexible PV modules
• BIPV (building-integrated PV) elements
• Semi-transparent solar glass for architectural applications

2. Hot Melt Adhesives for Packaging and Bookbinding

Industrial adhesive manufacturers select EVA 1326 as a key raw polymer for hot melt adhesive formulations in food packaging, carton sealing, and spine gluing. Its balance of flexibility, tack, and compatibility with hydrocarbon tackifiers enables precise adjustment of open time and peel strength. The low migration profile matches food safety standards. Stable viscosity control ensures reliable extrusion, slot coating, and sprayability on automated lines. Downstream users benefit from dependable bond formation in high-throughput conditions.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives: Indirect food contact)
• BfR XIV recommendations (Germany): adhesives in contact with food
• EN 923: Adhesives terminology and test methods
• ISO 9001: Quality management systems in adhesive production

Typical usage ratio

• EVA copolymer content typically 28–42% by weight of adhesive formulation
• Adjusted based on tackifier, wax, and plasticizer content required for viscosity and set time

Downstream process integration

• Blending polymer pellets with tackifiers and process wax in jacketed mixers
• Extrusion into blocks, pillows, or granules
• Remelting at 140–170°C for slot, bead, or spray application onto substrates
• Rapid cooling and set on conveyorized production lines

Final product types

• Corrugated box sealing glues
• Case and carton sealing adhesives
• Book spine adhesives for perfect binding
• Food packaging adhesives

3. Wire and Cable Insulation Compounds

Compounding and cable manufacturing sectors use Hanwha TotalEnergies 1326 in wire insulation and sheathing materials that demand excellent flexibility, dielectric strength, and process stability. This EVA grade enables precise control in pellet compounding with fillers and flame retardants. It supports consistent extrusion flow, low gel content, uniform dispersion, and high insulation integrity for medium voltage and control cables. Regulatory compliance with fire resistance and electrical safety is closely monitored during downstream QC.

Industry compliance standards

• IEC 60502: Power cables with extruded insulation
• UL 1581: Electrical wires, cables, and flexible cords
• RoHS and REACH SVHC restrictions
• VDE 0207-21 (Germany): EVA compounds for cable insulation

Typical usage ratio

• EVA content adjusted between 45–70% of compound mass depending on mechanical and electrical targets
• Formulation altered for filler, FR additive, and carbon black content

Downstream process integration

• High-shear melt blending of EVA with mineral fillers and flame retardants in twin-screw extruders
• Pelletization after cooling and screening
• Re-melting and extrusion coating over copper or aluminum conductor wire
• Cable jacketing with in-line thickness measurement and quality checks

Final product types

• Low-voltage power cables and wires
• Control cables for industrial automation
• Household appliance wiring
• Halogen-free flame retardant cable jackets

4. Footwear Sole and Midsole Injection Molding

Footwear and sporting goods manufacturers rely on EVA 1326 for producing lightweight, shock-absorbing foamed midsoles and outsoles. The copolymer’s foamability and flexibility support custom density and compression set control during injection and compression molding. Downstream processors benefit from narrow property variation in large-scale, multi-cavity production. Final products require consistent resilience, slip resistance, and comfort, while meeting physical property and chemical migration standards for global export.

Industry compliance standards

• ISO 20344: Personal protective equipment – test methods for footwear
• EN 13634: Protective footwear for motorcyclists
• REACH SVHC limits for footwear polymers
• CPSIA Section 108 (US): Phthalates content in children’s footwear

Typical usage ratio

• EVA resin share in foam compound typically 60–95%, varied based on target foam expansion and physical parameters
• Blowing agent and pigment levels controlled for density (0.18–0.35 g/cm³) and color uniformity

Downstream process integration

• Dry blending with crosslinkers, blowing agents, and color masterbatches
• Granulation and pre-heating prior to injection or compression mold loading
• Foaming and curing in heated molds with in-mold pressure control
• Trimming, painting, and assembly post-cure

Final product types

• Sports shoe midsoles
• Safety shoe outsoles
• Children’s sandal soles
• Flip-flop base sheets

5. Film Production for Greenhouse and Agriculture

Producers of agricultural and greenhouse films adopt our EVA grade to achieve soft, tear-resistant, and light-transmitting polymer films. The high vinyl acetate content enables controlled flexibility, frost resistance, and enhanced IR retention. Consistent resin performance supports multi-layer blown film lines and precise gauge tolerance over wide web widths. Manufacturers met strict requirements for field uv stability and safe use in food crop environments, including international environmental regulations.

Industry compliance standards

• ISO 18606: Packaging and the environment – organic recycling
• EN 13206: Plastic films for agricultural use
• Regulation (EC) No 1935/2004: Materials in contact with food
• REACH compliance – agricultural plastics

Typical usage ratio

• EVA incorporation varies from 10–30% of film mass (by target mechanical/optical properties)
• Usually co-blended with LDPE, LLDPE and processing aids

Downstream process integration

• Mixing EVA pellets into masterbatch or direct with base polymers
• Feeding to blown film extrusion systems (single or multi-layer)
• Wind-up, corona treatment and slitting into custom widths lengths
• Printing or perforating for finished applications

Final product types

• Greenhouse films and tunnel covers
• Mulch films and low tunnel sheeting
• Thermal agricultural films
• Vegetable and flower packaging film