Applications of Hanwha TotalEnergies 1152 EVA in Industrial Manufacturing

Hanwha TotalEnergies 1152 EVA is an ethylene-vinyl acetate copolymer widely used in key sectors requiring precise performance in formulation, process control, and regulatory compliance. Our material supports strict industrial demands, especially where flexibility, clarity, adhesion, and thermal processing stability are essential for high-value finished goods.

1. Photovoltaic Encapsulation Films

Photovoltaic module manufacturers rely on this ethylene-vinyl acetate for encapsulation film extrusion, where it provides long-term UV stability, high transmittance, and reliable adhesion to glass and solar cells. Strict material purity, low gel content, and controlled vinyl acetate content are critical for meeting lifetime and safety standards in solar module lamination. Process engineers select grades based on optical and crosslinking profiles needed for module durability. Hanwha TotalEnergies 1152 EVA enters the process at the film extrusion and crosslinking stages, ensuring rapid lamination cycles and robust bond between glass and cell elements.

Industry compliance standards

• IEC 61215 (Crystalline Silicon Terrestrial PV Modules – Design Qualification and Type Approval)
• IEC 61730 (Photovoltaic Module Safety Qualification)
• UL 1703/UL 61730 (North America Safety Standard for Flat-Plate PV Modules)
• RoHS Directive 2011/65/EU (Restriction of Hazardous Substances)

Typical usage ratio

• Film extrusion uses 100% EVA with optional crosslinking additives; exact film gauge (0.45–0.55 mm) and crosslinker dose (0.3–0.5%) adjusted based on lamination profiles and module type.

Downstream process integration

• EVA pellets feed directly into twin-screw extruders for film production; films undergo inline crosslinking and pre-lamination with glass and cell stacks before thermal lamination.

Final product types

• Photovoltaic encapsulation film rolls
• Mono- and polycrystalline PV modules
• Bifacial and double-glass solar panels
• Building Integrated Photovoltaic (BIPV) glass-laminate units

2. Hot Melt Adhesive Formulation

In hot melt adhesive plants, this EVA serves as a polymer base ensuring a balance between melt viscosity, flexibility at low temperatures, and adhesion strength on substrates such as paper, plastics, textiles, and nonwoven materials. Production lines carefully blend Hanwha TotalEnergies 1152 EVA with tackifiers, waxes, and plasticizers in heated mixers to develop grades for packaging, bookbinding, hygiene, and woodworking adhesives where thermal stability and wetting properties are critical. Each adhesive grade targets substrate-specific demands and end-use processing temperatures, requiring consistent melt flow and VOC control.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives for Food Packaging)
• REACH Annex XVII (Restriction of Chemicals)
• EN 71-3 (Toy Safety—Migration of Certain Elements)
• ISO 9001:2015 (Quality Management Systems for Adhesive Production)

Typical usage ratio

• EVA content ranges from 25–40% in hot melt formulas; adjusted with tackifiers and waxes based on target open/setting time and bonding strength for specific substrates.

Downstream process integration

• EVA is pre-melted and batch-mixed with formulation ingredients; adhesives are pelletized or formed into slugs/blocks for packaging, then remelted during downstream end-use.

Final product types

• Case and carton sealing adhesives
• Bookbinding spine glues
• Diaper and hygiene adhesives
• Disposable medical device assembly adhesives

3. Wire and Cable Compound Manufacturing

This EVA copolymer is an industry standard for insulation and sheathing compounds in low voltage wire and cable production, where it imparts electrical insulation, mechanical flexibility, flame retardancy, and environmental stress-cracking resistance. Compounders incorporate Hanwha TotalEnergies 1152 EVA with fillers, stabilizers, and flame retardants in high-shear mixers and extruders, optimizing batch formulation for cable safety and flexibility requirements. End users demand materials that meet transmission, mechanical, and fire safety regulations for building and automotive wiring.

Industry compliance standards

• UL 1581 (Reference Standard for Electrical Wires, Cables, and Flexible Cords)
• IEC 60502-1 (Power Cables with Extruded Insulation)
• RoHS Directive 2011/65/EU
• VDE 0207 (German Cable Materials Standard)

Typical usage ratio

• Base polymer constitutes 35–60% of compound by weight; content varies with flexibility, dielectric, and flame performance requirements.

Downstream process integration

• EVA blends with co-polymers and additives in internal mixers or twin-screw extruders; the compound processes via extrusion coating onto copper/aluminum conductors and jacketing lines.

Final product types

• Building wire insulation (household and industrial)
• Low voltage power and control cables
• Automotive primary wire jackets
• Flexible appliance cords

4. Footwear and Foam Injection Molding

Footwear manufacturers deploy this EVA for injection and compression molding of foam soles, midsoles, and specialty sport shoe components. The material delivers a unique balance of cushioning, energy return, and flexibility, resistant to hydrolysis and low-temperature cracking. Processing engineers manage formulations by blending Hanwha TotalEnergies 1152 EVA with blowing agents, crosslinkers, pigments, and fillers. Product safety and consumer comfort require precise batch compositions and in-process QA to achieve uniform cell structure and mechanical properties in mass footwear production.

Industry compliance standards

• ISO 20344/20345 (Footwear Test Methods and Safety Footwear)
• REACH Annex XVII (Restricted Substance Compliance for Footwear)
• CPSIA (Consumer Product Safety Improvement Act for Children’s Footwear, USA)
• GB 25036 (Chinese Standards for Rubber and Plastic Footwear)

Typical usage ratio

• EVA resin at 55–90% of foam compound weight; formulation varies by density and hardness class, adjusted by physical blowing agent and additive loading per shoe style.

Downstream process integration

• EVA compounded in melt-kneaders with foaming and coloring agents; mass transferred to injection or compression molds, undergoing thermal expansion and crosslinking for cell structure.

Final product types

• Sports shoe midsoles
• Casual and safety shoe outsoles
• Slippers and sandals
• Custom-molded orthotic footbeds

5. Flexible Packaging Film

Flexible packaging companies use Hanwha TotalEnergies 1152 EVA for film and sheet extrusion, where the polymer enhances sealability, puncture resistance, and clarity. The material’s compatibility with PE and PP supports multilayer film construction for food, medical, and specialty industrial packaging. Operators require controlled gel levels, consistent MI, and transparency for effective lamination, heat-sealing, and product protection. Compliance with direct and indirect food contact standards is mandatory in this sector to protect end consumer safety.

Industry compliance standards

• FDA 21 CFR 177.1350 (EVA in Food Contact Articles)
• EU Regulation 10/2011 (Plastics for Food Contact)
• ISO 22000 (Food Safety Management Systems)
• GMP Regulation (EC) 2023/2006 (Good Manufacturing Practice)

Typical usage ratio

• 5–25% EVA blended into multilayer extruded films; ratio set for optimal seal strength, low-temperature sealing, and tear resistance specific to foodpack or medical pack formats.

Downstream process integration

• EVA incorporated via co-extrusion with LDPE/LLDPE; inline blending on blown or cast film lines, followed by corona treatment and conversion into bags, pouches, or liners.

Final product types

• Frozen food packaging films
• Vacuum and shrink bags
• Sterile medical pouches
• Industrial lining sheets