Applications of LG Chem SEETEC EA19400 EVA in Industrial Manufacturing

LG Chem SEETEC EA19400 EVA is an ethylene-vinyl acetate copolymer specifically engineered for demanding industrial manufacturing environments. Its controlled melt flow and functional vinyl acetate composition make it suited for high-value polymer processing, where clarity, flexibility, and consistent processability are essential. We only present sectors where this material has a validated role in large-scale, commercial production, covering comprehensive information for technical integration and formulation development.

1. Photovoltaic Encapsulant Film Processing

Major PV module manufacturers select EA19400 for its reliable lamination behavior, gel content stability, and compatibility with crosslinking additives. EVA serves as the encapsulant layer to seal photovoltaic cells, providing transparency and strong adhesion to both glass and backsheet, achieving the mechanical protection and long-term weathering resistance required in solar panel deployment for energy infrastructure.

Industry compliance standards

• IEC 61215: Terrestrial photovoltaic modules – Design qualification and type approval
• UL 1703: Flat-Plate Photovoltaic Modules and Panels
• RoHS 2011/65/EU: Restriction of Hazardous Substances Directive
• ISO 9001:2015 Quality Management Systems in production

Typical usage ratio

• Up to 70 wt% for encapsulant film formulations, modulated between 60–75% based on module design, required transparency, and crosslinking agent compatibility

Downstream process integration

• Resin pellet dosed into film extrusion lines with masterbatches and additives; sheets are cast, then processed in vacuum lamination set-ups with photovoltaic cells, glass and backsheet; thermal crosslinking completes the encapsulation cycle

Final product types

• Encapsulant films for crystalline silicon PV modules
• Encapsulant sheets for thin-film solar panels
• BIPV (Building Integrated Photovoltaics) module adhesives

2. Hot Melt Adhesive Formulation

Manufacturers of hot melt adhesives for packaging, woodworking, and paper conversion utilize EA19400 for its balance between tackiness, flexibility, and open time. The grade’s precise vinyl acetate concentration ensures rapid wetting and consistent adhesion under mechanical load, allowing converters to custom-tune the rheology for line speed and substrate variability in automated production facilities.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives for indirect food contact, US)
• REACH EC 1907/2006 compliance (EU chemical regulation)
• ISO 14001: Environmental Management System for adhesive production
• GMP for Food Packaging Adhesives (BRCGS Packaging Material Issue 6)

Typical usage ratio

• 30–50 wt% in final hot melt adhesive bases; proportion adjusted based on softening point targets and viscosity, typically modified with tackifiers and waxes

Downstream process integration

• Pellets added to batch melt mixing vessels with tackifiers and modifiers; molten blend pumped to film extrusion or bead deposition heads before cool-down on target substrate such as carton board, book spine, or composite wood part

Final product types

• Hot melt adhesive sticks and slugs
• Case and carton sealing adhesives
• Bookbinding adhesives
• Pressure sensitive tapes for industrial assembly

3. Flexible Foam Shoe Sole Compounding

Footwear manufacturers incorporate EA19400 in EVA foam formulations, chosen for its process control, resilience, and compatibility with physical blowing agents. The material provides cell nucleation and elasticity for molded sole units that must pass durability testing and comfort standards, contributing to lightweight construction for athletic and casual shoes in high-throughput mold shops.

Industry compliance standards

• ISO 20344:2011: Personal protective equipment – Test methods for footwear
• REACH Annex XVII: Restricted substances for consumer products
• GB/T 15107:2005: Chinese National Footwear Standard
• Phthalate-free and PAHs restriction requirements for major brand supply chains (e.g., AFIRM Group RSL)

Typical usage ratio

• 40–65 wt% of resin in sole foaming batch, dependent on targeted hardness and expansion ratio, with adjustments for different shoe styles and in-mold density

Downstream process integration

• Pelletized EVA blends with crosslinking agents and blowing additives in internal mixers; compound is sheeted, cut, and placed into heated molds for closed-mold expansion and crosslinking, followed by trimming and surface finishing

Final product types

• Molded EVA foam midsoles for athletic footwear
• EVA foam outsoles for sandals and slippers
• Work boot comfort inserts

4. Wire and Cable Insulation Extrusion

Cable compounders and insulation producers specify this EVA grade for its dielectric properties and resistance to thermal aging. Formulators blend with flame retardants and antioxidants to meet fire safety while achieving the mechanical flexibility needed for data and power cable jacketing, critical in robotics, infrastructure, and automotive harness applications requiring reliable long-term field performance.

Industry compliance standards

• UL 1581: Reference Standard for Electrical Wires, Cables
• IEC 60502-1: Power cables with extruded insulation
• RoHS 2011/65/EU and EN 50363-7: Halogen-free cable compounds
• CPR (EU 305/2011) Construction Products Regulation for fire performance

Typical usage ratio

• 50–90 wt% as base polymer within insulation compound; exact ratio based on flame retardant/filler concentration and target elongation-to-break requirements

Downstream process integration

• Resin, flame retardants, and additives compounded in twin-screw extruders; melt directly extruded onto copper or aluminum conductor cores, followed by on-line crosslinking or water-cooling for jacket stabilization

Final product types

• Low-voltage power and instrument cables
• Automotive wiring harness sheaths
• Halogen-free, flame retardant cable jackets

5. Plastic Compound Masterbatch Carriers

Masterbatch producers select this copolymer as a carrier resin for pigment concentrates and performance additive dispersions used in coloring and modifying polyolefin products. The grade’s melt viscosity supports continuous blending and stable pigment wetting, reducing agglomerate formation in end-user molding operations, which ultimately drives color consistency and physical property integration during plastics conversion.

Industry compliance standards

• ISO 1833: Masterbatch certification
• EN 71-3: Toy Safety Chemical Migration (for colored plastics used in children’s products)
• ISO 9001:2015 in color and additive concentrate manufacturing
• REACH Annex XVII limits on colorant and additive substances

Typical usage ratio

• Carrier resin content typically ranges 35–60 wt% of masterbatch depending on loading of pigment or additive and the targeted compatibility with downstream base polymers

Downstream process integration

• Copolymer melt-blended with inorganic or organic pigments/additives using high-shear mixers or twin-screw extrusion; masterbatch pellets dosed by end users into film, injection, or foam molding operations as coloring/modifying intermediates

Final product types

• Color masterbatches for polyolefin films and containers
• Antioxidant and UV stabilizer masterbatches for injection molded parts
• Flame retardant additive concentrates for compounding