Applications of LG Chem SEETEC EL18025 EVA in Industrial Manufacturing

SEETEC EL18025 EVA, produced by LG Chem, delivers controlled vinyl acetate content and precise melt flow properties, supporting technical demands in modern polymer processing. This grade finds strong industry adoption as a functional polymer modifier, film substrate, and encapsulation matrix across several advanced manufacturing sectors. Below are key downstream application scenarios that illustrate its specific industrial use.

1. Solar Photovoltaic (PV) Encapsulation Sheets

Photovoltaic module manufacturers rely on EL18025 for the lamination of solar cells, exploiting its high clarity and durability. In this setting, the material ensures consistent light transmission and enduring adhesion between glass and silicon wafers. The selection of this grade supports stable module output during prolonged UV and thermal cycling, facilitating tight production tolerance for both thin-film and crystalline silicon cell encapsulation.

Industry compliance standards

• IEC 61215: Crystalline Silicon Terrestrial Photovoltaic Modules
• IEC 61730: PV Module Safety Qualifications
• UL 1703: Safety Standard for Flat-Plate PV Modules
• RoHS Directive 2011/65/EU (restricts hazardous substances)

Typical usage ratio

• 60–80 wt% EVA in encapsulant blend. Adjusted depending on curing additives, crosslinker content, and module design.

Downstream process integration

• In-line extrusion or calendering feeds encapsulation line.
• Pre-cut sheets loaded between glass and cell matrix.
• Crosslinking via vacuum lamination at 140–155°C for 10–25 min.
• Typical in final module lamination before framed assembly.

Final product types

• Monofacial PV panels
• Bifacial solar modules
• Flexible thin-film PV laminates
• Building-integrated photovoltaic glass

2. Hot Melt Adhesive (HMA) Resin Manufacturing

Adhesive compounders incorporate EL18025 as a core polymer base in hot-melt adhesives, capitalizing on its melt flow behavior and tack retention. Its compatibility with tackifiers and waxes supports precise viscosity management for both packaging and automotive applications, where consistent bonding and temperature resistance define performance metrics. End-use manufacturers demand this grade for repeatable application during high-speed automatic dispensing and thermal bonding.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives, indirect food contact)
• EU 10/2011 regulation for food-contact polymers
• ISO 9001 and ISO 14001 for production quality and environmental management
• EN 923 for adhesive and sealant terminology

Typical usage ratio

• 25–45 wt% in adhesive formulation. Adjust ratio based on desired open time, peel strength, and application temperature.

Downstream process integration

• Dry blending with tackifiers, plasticizers, and additives.
• Fed to continuous or batch hot-melt extruders.
• Compounded resin pelletized before slabbing or granulation.
• Melted at 120–180°C during final user manufacturing or application.

Final product types

• Case and carton sealing adhesives
• Bookbinding glues
• Filter assembly adhesives
• Hot-melt pressure sensitive tapes

3. Flexible Packaging Film Production

Film converters value the controlled melt flow of EL18025 for coextruding multilayer flexible packaging films. Its functional group content improves seal integrity and mechanical toughness across a range of food and medical grade films. Operators leverage this resin to fine-tune tear resistance and low-temperature sealing characteristics, supporting complex pouch and lidding constructions adhered to regulatory frameworks for direct and indirect food contact materials.

Industry compliance standards

• FDA 21 CFR 177.1350 (Ethylene-vinyl acetate copolymers)
• EU Regulation (EC) No 1935/2004 (materials in contact with food)
• GMP Regulation (EC) No 2023/2006
• ISO 22000 for food safety management in packaging production

Typical usage ratio

• Blended at 10–35 wt% with LDPE, LLDPE, or other polyolefins. Modified depending on required seal strength, clarity, and flexibility.

Downstream process integration

• Coextrusion as sealant or core layer in blown/cast film lines.
• Film surface treated for print adhesion, anti-fog, and slip properties.
• Final corona/ plasma treatment as required by downstream printing or lamination.
• Slitting and roll forming before pouching or bag making.

Final product types

• Vacuum pouch films
• Lidding films for trays and cups
• Medical device packaging
• Frozen food bags

4. Cable Insulation and Sheathing Compounds

Wire and cable compounders opt for EL18025 as a modifier in low-voltage cable insulation, exploiting its flexibility and electrical resistance. The grade performs as a base polymer or blend component in flame-retardant and non-halogenated formulations, helping manufacturers comply with strict fire safety and RoHS directives for building, automotive, and electronics wire harnesses. Processors can consistently extrude smooth sheath layers for robust abrasion and stress crack resistance.

Industry compliance standards

• UL 1581: Reference Standard for Electrical Wires, Cables
• IEC 60332-1 (Flame propagation)
• RoHS Directive 2011/65/EU
• EN 50290 Cable Compounds Standards

Typical usage ratio

• 20–35 wt% in primary insulation blends. Blending ratio adjusted based on target flexibility, fire resistance, and mechanical properties.

Downstream process integration

• Dry or melt blending with PE, fillers, and flame retardant packages.
• Compounding via twin-screw extrusion.
• Direct pellet feed to continuous cable extrusion line.
• Final crosslinking in reticulated cable types by irradiation or chemical curing.

Final product types

• Low-voltage cable insulation
• Building wiring sheathing
• Automotive harness insulation
• Data communication cables

5. Footwear Injection and Foaming Compounds

Footwear manufacturers use EL18025 for insole, midsole and outsole compounds, recognizing its balance of flexibility, elasticity, and compatibility with physical and chemical foaming processes. Compounds employ this material for injection molding, offering stable cell structure and improved end-user comfort. Engineers can reliably control expansion ratios and rebound performance for both athletic and casual footwear, while maintaining production consistency in high-throughput mold systems.

Industry compliance standards

• ISO 20871: Footwear – Performance and durability
• REACH Regulation (EC) No 1907/2006
• ISO 9001 for quality management in manufacturing
• Phthalate-free and restricted substance protocols per brand/retailer contract

Typical usage ratio

• 40–60 wt% in EVA-based foaming compounds. Dosage defined according to target hardness, density, and shore A characteristics.

Downstream process integration

• Compounding with crosslinkers, foaming agents, pigments, and rubber modifiers.
• Melt mixing by internal mixer or twin-screw extruder.
• Expansion by injection or compression molding at 160–185°C.
• Post-mold curing where crosslinked midsole performance is required.

Final product types

• Sport shoe midsoles and outsoles
• Beachwear slippers
• Orthopedic and comfort insoles
• Antistatic safety footwear inserts

6. Agricultural Greenhouse and Mulch Film

Agricultural film converters deploy EL18025 as a functional blend component in greenhouse and field mulch films, leveraging its flexibility and chemical stability for UV and pesticide exposure. The specific VA content helps maintain film elongation and tear properties necessary for machine-laying and seasonal removal. This grade also supports the stringent migration limits for food crop environments, ensuring long soil contact and resistance to cracking or chalking during varying outdoor conditions.

Industry compliance standards

• EN 13655:2018 (Plastic films for agriculture)
• EU Regulation (EC) No 2016/1416 (Plastic materials for agricultural films)
• ISO 9001 for traceability in agricultural materials
• Phthalate and heavy metal content controls (brand/customer protocols)

Typical usage ratio

• 5–15 wt% EVA co-blended with LLDPE/LDPE in film formulations. Adjusted based on desired softness, anti-fog, and thickness requirements.

Downstream process integration

• Direct addition in blown/cast film lines for single or multi-layer construction.
• Formulation with UV-stabilizers and anti-fog agents.
• Roll slitting and perforation as per farm application machinery.
• Post-extrusion welding or folding ahead of field delivery.

Final product types

• Greenhouse covering films
• Row mulch films
• Crop protection tunnel films
• Soil fumigation films

7. Masterbatch and Compound Carrier Resin

Masterbatch producers select EL18025 as a carrier resin for pigment, additive and functional masterbatches, seeking low migration and excellent dispersion properties. The polymer matrix supports strong pigment wetting and allows compounded colors or additives to blend efficiently into host polyolefins in downstream molding and extrusion. This application underpins stringent color quality and batch consistency for packaging, fiber and molded goods customers who require on-spec performance in automated high-volume production settings.

Industry compliance standards

• ISO 9001 for masterbatch manufacturing QA systems
• EU 10/2011 for food-contact masterbatch grades
• FDA 21 CFR 178.3297 (Colorants for polymers)
• Global automotive OEM RSL for color and additive systems

Typical usage ratio

• 60–90 wt% carrier in masterbatch granules. Ratio determined by pigment/additive loading, downstream letdown rate, and process compatibility.

Downstream process integration

• Pre-mixing pigments/additives with carrier resin in high-shear or twin-screw extruder.
• Pelleterizing granules for user blending.
• Incorporation by dosing and blending into host polymers at 1–5 wt% in end-product processing lines.
• Used in blown film, injection molding, fiber spinning, and sheet extrusion.

Final product types

• Colored films and packaging
• Fiber masterbatches for nonwovens
• Additive masterbatches in dairy or beverage caps
• UV, antioxidant, or slip masterbatches for technical plastics