Applications of Hanwha TotalEnergies 1519 EVA in Industrial Manufacturing

Hanwha TotalEnergies 1519 EVA offers a reliable balance of flexibility, adhesion, and processability, making it a preferred copolymer for specialized industrial sectors. As a chemical raw material manufacturer, we deliver controlled grade consistency, supporting demanding downstream production environments that require precise formulation and compliance with relevant industry standards. Below, we present key application areas based on real-world integration of this raw material.

1. Solar Photovoltaic Encapsulation Films

Our material forms the backbone of encapsulant layers in photovoltaic module manufacturing. Using 1519 EVA, film producers achieve strong lamination, UV stability, and moisture resistance crucial for module longevity. Its melt index and vinyl acetate content consistently meet encapsulation film requirements, supporting glass-glass and glass-backsheet solar modules produced on automated film extrusion and lamination lines. Formulation experts adjust resin loading for transparency and adhesion, coordinating with downstream crosslinking and cure schedules to fulfill both IEC and customer-specific criteria.

Industry compliance standards

• IEC 61215: Crystalline silicon terrestrial PV modules design qualification and type approval
• IEC 61730: PV module safety qualification
• RoHS Directive 2011/65/EU (for hazardous substances regulation)
• UL 1703: Standard for Flat-Plate Photovoltaic Modules and Panels

Typical usage ratio

• Films use 100% EVA as the main resin; additives (crosslinkers, UV absorbers, antioxidants) are incorporated at up to 5% depending on transparency and curing targets; film thickness typically 0.45–0.55 mm

Downstream process integration

• Integrated during hot-melt film extrusion as primary encapsulant resin; downstream, films are laminated between solar cells and cover glass under heat and pressure to crosslink and encapsulate the cells securely

Final product types

• Solar PV encapsulant films
• Glass/glass and glass/backsheet PV modules
• BIPV (Building-integrated photovoltaics) panels
• Flexible and lightweight solar panels

2. Hot Melt Adhesive (HMA) Formulation

1519 EVA delivers superior cohesion, peel strength, and viscosity consistency for industrial hot melt adhesive compounding. In packaging, bookbinding, and woodworking applications, adhesive producers value the balance of flexibility and bond performance, which they fine-tune by varying resin content alongside waxes, tackifiers, and stabilizers. Finished adhesives undergo automated extrusion, block molding, and pelletization processes, where process engineers rely on predictable rheology and purity to maintain application standards—especially in regulated food contact and consumer packaging environments.

Industry compliance standards

• FDA 21 CFR 175.105: Adhesives for indirect food contact
• REACH Regulation (EC) No 1907/2006
• BfR Recommendation XXI: Adhesives for Food Packaging
• EN 923: Adhesives terminology and process standards

Typical usage ratio

• HMA base may contain 30–50% EVA copolymer by weight; precise percentages depend on application temperatures, bond strength, open time, and flexibility required for end use

Downstream process integration

• Blended with tackifiers, waxes, and antioxidants in high-shear batch mixers; fed into extruders or reactors for granulation or block formation; compounded hot melts are filtered, cooled, and pelletized before packaging for downstream use

Final product types

• Bookbinding adhesives
• Packaged carton sealing adhesives
• Woodworking hot melts
• Pressure-sensitive or fast-setting HMA pellets and sticks

3. Cable Insulation and Sheathing Compounds

Electrical cable manufacturers depend on the mechanical strength, stress crack resistance, and dielectric properties of this EVA resin for compounding primary and secondary insulation layers. They combine resin with stabilizers, flame retardants, and colorants as required by cable type and performance class. The material enters twin-screw extrusion or Banbury mixing for uniform compounding before continuous cable coating and inline quality assurance. Compounds must deliver reliable aging, oil resistance, and specific elongation values for compliance in high-voltage and telecom cables.

Industry compliance standards

• UL 62: Flexible cords and cables
• IEC 60502-1: Power cables with extruded insulation
• RoHS Directive 2011/65/EU
• EN 50363-3: EVA insulation compounds for cables

Typical usage ratio

• Primary insulation blends incorporate 40–70% EVA, balanced by flame retardants (e.g., ATH), fillers, and stabilizers; dosage responds to voltage class, thermal endurance, and required flexibility

Downstream process integration

• Resin compounded with additives in batch mixers; then extruded onto copper or aluminum wire cores on high-speed lines, forming insulation or sheathing layers with in-line crosslinking if specified

Final product types

• Power cable insulation for low- and medium-voltage applications
• Data/telecom cable jackets
• Flexible cords for appliances
• Flame-retardant cable compounds

4. Footwear Injection and Compression Molding

Shoe manufacturers select this raw material to achieve key balance in EVA foam soling, delivering cushioning, resilience, and weight reduction for sports and safety footwear. The compounding process involves proportioning the resin with expanding blowing agents, fillers, colorants, and process aids in specific ratios, based on the target density, resilience, and deformation recovery. These blends feed injection molding or compression molding units, often with a crosslinking stage, and run through automated demolding and trimming to meet design and physical property requirements driven by both international shoe standards and specific brand expectations.

Industry compliance standards

• EN ISO 20345: Personal protective equipment—safety footwear
• EN ISO 20347: Occupational footwear requirements
• REACH Annex XVII (for restricted substances in consumer footwear)
• GB/T 15107: EVA foam for footwear (China domestic)

Typical usage ratio

• Shoe soling compounds typically use 65–85% EVA, adjusted with blowing agents (1–5%), crosslinkers (up to 2%), and fillers or colorants per manufacturer’s process and cushioning target

Downstream process integration

• EVA resin mixed with additives and blowing agents, formed into sheets or injected into molds at controlled temperature and pressure; foaming and crosslinking occur in situ during molding; components then demolded, cooled, and precision-trimmed

Final product types

• Sports shoe midsoles
• Safety shoe insoles and outsoles
• Beach sandals and slippers
• Fashion foam footwear components

5. Film and Sheet for Food Packaging

Film manufacturers leverage the flexibility, clarity, and seal strength of this resin grade for co-extruded and mono-layer films used in food packaging. Compounding typically occurs with select nucleating agents, anti-blocks, and slip additives to achieve the required thickness, optical properties, and machinability. Post-extrusion, films pass through corona or flame treatment before slitting and integration with lamination or printing lines. Quality assurance focuses on migration limits, seal integrity, and regulatory compliance for food contact materials as demanded by global and regional guidelines.

Industry compliance standards

• FDA 21 CFR 177.1350: EVA copolymers for food contact
• EU 10/2011: Plastics intended to come into contact with food
• GB 4806.7: Plastic materials and articles for food contact (China)
• EN 1186: Materials and articles in contact with foodstuffs

Typical usage ratio

• Co-extruded films: 15–40% EVA by layer, consistent with required sealing temperature and flexibility; mono-layer films may use higher concentrations for cling or peelable lid stock

Downstream process integration

• Resin melted and extruded into films via blown or cast film lines; films subjected to surface modification before secondary converting steps such as printing or laminating; thickness and cling adjusted via process settings

Final product types

• Food wrap and cling films
• Vacuum pouch and bag structures
• Lidding films for containers
• Flexible fresh produce and bakery packaging