Applications of LG Chem SEETEC EA28015 EVA in Industrial Manufacturing

LG Chem SEETEC EA28015 EVA supports critical downstream industries with controlled quality and consistent composition, serving as a key functional polymer in demanding manufacturing environments. The following sections detail proven application scenarios, industry-specific guidelines, recommended usage ranges, typical integration stages, and resultant end products.

1. Photovoltaic Encapsulant Sheet Production

Manufacturers use SEETEC EA28015 EVA as a primary base resin for photovoltaic (PV) module encapsulant sheets. High vinyl acetate composition enables excellent adhesive and optical properties, supporting module durability and light transmission. Processing requires stringent cleanliness and compatibility checks to pass international PV quality regimes.

Industry compliance standards

• IEC 61215 (PV module performance qualification)
• IEC 61730 (PV module safety qualification)
• UL 746C (Polymeric Materials - Use in Electrical Equipment Evaluations)
• REACH chemical safety regulations (EU)

Typical usage ratio

• Normally 90-100% EVA by weight in extruded sheets; additives (photo-stabilizers, crosslinker, UV absorbers) tailored between 0.5-2% per function to balance adhesion and weatherability.

Downstream process integration

• Melt compounding in screw extruders with antioxidant package.
• Lamination under vacuum with glass and solar cell wafers at 140-155°C.
• Post-lamination crosslinking initiated thermally during module assembly.

Final product types

• PV module encapsulant films
• Bifacial and multi-layer solar panel sheets
• Building-integrated photovoltaic modules
• Flexible solar cells

2. Hot Melt Adhesive Formulation

The copolymeric backbone and flexibility of this EVA grade make it effective in hot melt adhesive (HMA) formulations. It works as the main polymer matrix, offering balance between adhesion, cohesion, and flow properties, especially valuable for packaging, woodworking, and assembly applications.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives - indirect food contact)
• ASTM D1876 (Peel Resistance of Adhesives)
• EN 923:2015 (Adhesives Terminology)
• ISO 9001 certified quality management requirements

Typical usage ratio

• 40-55% EVA in bulk HMAs, with tackifiers, waxes, stabilizers comprising the balance; ratio adjusted per viscosity and open time needs.

Downstream process integration

• Direct blend with tackifying resins and plasticizers in melt-kettles or internal mixers at 120-170°C.
• Pumping or extrusion into pellet, block, or stick formats for industrial glue applications.
• Final application by roll coaters, nozzles, or bead extruders on automated packaging lines.

Final product types

• Case and carton-sealing adhesives
• Edge banding glues for MDF or plywood
• Bookbinding hot melt glues
• Pressure-sensitive adhesive blocks and pellets

3. Wire and Cable Insulation Compounds

Cable compound producers incorporate this EVA grade in insulation and jacketing materials for low voltage wires. The polymer supports flame-retardant and low-smoke halogen-free (LSHF) cable requirements. Consistency and purity are essential to pass demanding sectoral electrical and fire safety standards.

Industry compliance standards

• IEC 60502-1 (Power cables with extruded insulation and their accessories)
• UL 62 (Flexible Cords and Cables)
• RoHS Directive (2011/65/EU) for hazardous substances
• EN 50267-2-1 (Halogen acid gas emission)

Typical usage ratio

• 20-40% EVA blended with high loading (55-75%) of flame-retardant fillers like ATH; ratios fine-tuned to meet specific dielectric and flame retardance requisites.

Downstream process integration

• Melting and compounding with ATH, coupling agents, and color masterbatches in twin screw extruders.
• Direct extrusion onto copper wire cores under controlled temperature and screw speed.
• Inline quality checks for tensile strength, elongation, and insulation thickness.

Final product types

• LSHF power and control cable insulation
• Telecommunication cable jacketing
• Flexible appliance wires
• Fire-resistant building cable compounds

4. Foam Sheet and Gasket Manufacturing

Processors employ the material in crosslinked and non-crosslinked foam goods requiring long-lasting flexibility, shock absorption, and sealing features. Reliable cell structure development and consistent expansion demand precise control over formulation and downstream thermal processing parameters.

Industry compliance standards

• ISO 845 (Cellular materials - Apparent density test)
• REACH (Chemicals safety data for foam ingredients)
• ASTM D3575 (Flexible cellular materials - testing based on expansion and resilience)
• ISO 14001 (Environmental management for foam production)

Typical usage ratio

• 55-80% EVA base, combined with 10-30% blowing agent and 1-5% crosslinking agents or co-polymers; ratios adapted to expansion requirement and final hardness.

Downstream process integration

• Batch or continuous mixing of EVA pellets with chemical blowing agents (azodicarbonamide or similar) and co-additives.
• Sheet or roll extrusion followed by thermal foaming (150-160°C).
• Post-extrusion crosslinking for increased dimensional stability before die-cutting into final components.

Final product types

• Shoe sole sheets and midsoles
• Foam gaskets and sealing strips
• Automotive interior padding
• Sports and leisure mats

5. Flexible Packaging Film Coating

Film converters use this EVA resin as an impact-modifying and sealing layer in multi-layer flexible packaging. Its clarity and sealing characteristics help achieve strong heat seals, puncture resistance, and cold flexibility for food and personal care product packaging.

Industry compliance standards

• FDA 21 CFR 177.1350 (Ethylene-vinyl acetate copolymers; food contact)
• EN 1186 (Materials and articles in contact with foodstuffs, plastics)
• ISO 22000 (Food safety management for packaging production)
• Japan Food Sanitation Law (for locally exported packaging applications)

Typical usage ratio

• 10-25% EVA as sealing layer in coextruded films; adjusted higher for shrink films and lower for adhesion-only layers.

Downstream process integration

• In-line extrusion co-lamination with LDPE, LLDPE, and functional barrier layers.
• Heat and pressure application for seal formation during bag or pouch conversion.
• Continuous process monitoring for thickness, optical clarity, and seal integrity.

Final product types

• Food wrap and vacuum pouch films
• Personal care sachets
• Frozen food packaging films
• Lidding films for trays and pots

6. Injection Molding for Toys and Consumer Goods

Producers select this EVA grade for the soft, flexible components in toys, grips, handles, and non-PVC consumer items that mandate tough, resilient performance along with low odor and safe migration profiles. Reliable color acceptance and molding consistency support high-throughput injection processes.

Industry compliance standards

• EN 71-3 (Toy Safety-Migration of certain elements, EU)
• ASTM F963 (Standard Consumer Safety Specification for Toy Safety, USA)
• ISO 8124 (Safety of toys, physical and mechanical properties)
• Phthalate-free requirements (EU/US consumer goods)

Typical usage ratio

• 85-100% EVA, with up to 10% color masterbatch and 3-7% processing aids or anti-block agents, depending on component performance targets.

Downstream process integration

• Pellet blending with color and process additives.
• Direct feed to high-speed injection molding machines with set melt temperature ~160-200°C.
• Mold-cooling and demolding cycles set for product wall thickness and in-mold decoration integration if required.

Final product types

• Soft toy components
• Ergonomic grips for stationery and kitchen tools
• Protective edge guards
• Household product overmolds