Applications of LG Chem SEETEC EA28400 EVA in Industrial Manufacturing

LG Chem SEETEC EA28400 EVA is a high-performance ethylene-vinyl acetate copolymer widely recognized in specialized B2B markets for its well-balanced flexibility, compatibility, and processing behavior. As an original manufacturer, we support various critical downstream sectors with this material, supporting manufacturers in meeting compliance demands and process requirements in high-volume, quality-sensitive industries. The following scenarios demonstrate actual industrial applications, focusing on the precise needs and regulations of each field.

1. Encapsulation of Photovoltaic (PV) Solar Modules

Our EVA resin supports solar PV module assembly with controlled crosslinking and lamination features, enabling reliable encapsulation of solar cells. Downstream customers select this grade for its adhesion to glass and cells, optical transparency, and proven durability in outdoor environments. Manufacturers control additive and layer thickness for weight, transparency, and electrical insulation requirements.

Industry compliance standards

• IEC 61215, IEC 61730 (Photovoltaic module performance and safety)
• UL 1703 (Flat-Plate Photovoltaic Modules and Panels)
• TUV Rheinland 2 PfG 1169/08.2007 (EVA sheets for PV modules)
• REACH Regulation (EC) No 1907/2006

Typical usage ratio

• 100% EVA usage for encapsulant sheets; layer thickness typically 400-600 μm, adjusted as per cell design and climatic exposure

Downstream process integration

• Feeds extruder lines to produce encapsulant films, which are then laminated (under 140-155°C, vacuum applied) in multi-layer PV module structures before edge sealing

Final product types

• Crystalline silicon and thin-film photovoltaic solar panels
• Building-integrated photovoltaic glass modules
• Flexible and lightweight solar modules for portable power

2. Hot Melt Adhesives for Packaging and Bookbinding

Many industrial adhesive formulators rely on our material as a primary polymer backbone in hot melt adhesive blends for carton sealing, book spine gluing, and label application. Its melting point and viscosity profile fit continuous packaging lines and commercial bookbinding, allowing for controlled tack, peel, and heat resistance properties. In practice, additive concentration, process conditions, and substrate pairing drive precise formulation selection.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives for indirect food contact)
• EN 923 and EN 12004 standards for adhesives
• ISO 17025 for quality control testing in adhesive production

Typical usage ratio

• 30% to 60% EVA in hot melt formulations; often adjusted for open time, viscosity, and target adhesion strength using tackifiers, waxes, and oil modifiers

Downstream process integration

• Blended with additives in heated tanks (approx. 120-180°C), extruded or pelletized, then remelted during automated hot melt application to substrates via roller or nozzle in downstream packaging lines

Final product types

• Case and carton sealing adhesives
• Bookbinding hot melt glues (perfect binding, side glues)
• Self-adhesive labels, tape formulations for packaging and office use

3. Injection Molded Foam and Sports Shoe Soles

Footwear and sporting goods manufacturers use this EVA grade in foamed compounds for midsoles, outsoles, and protective pads, exploiting its low density, resilience, and comfort properties. Strict quality testing ensures foaming agents, physical expansion, and polymer crosslinking deliver specifications for hardness, durability, and compression set. Operators adjust compound ratios for kid, casual, athletic, or work safety shoes.

Industry compliance standards

• ISO 20344-20345 (Personal protective footwear requirements)
• Oeko-Tex® Standard 100 (Textile and footwear materials safety)
• GB/T 28011-2011 (Chinese standard for shoe sole performance)

Typical usage ratio

• 50% to 100% EVA content in the polymer matrix; foaming agent usage (azodicarbonamide, etc.) ranges 2-8% by weight, adjusted for weight reduction, density, and cushioning level

Downstream process integration

• Compound is premixed with crosslinker, foaming agent, pigments, and additives, then forms via injection or compression molding at 150-200°C, followed by post-mold expansion and trimming

Final product types

• Running and sports shoe midsoles/outsoles
• Safety and industrial footwear soles
• Recreational sandal and flip-flop bases
• Cushioning, protective pads, insoles

4. Wire and Cable Insulation Compounds

Cable manufacturers integrate this EVA copolymer as a key component in flame-retardant, moisture-resistant, low-voltage and communication cable insulation and jacketing. Its balance of electrical properties, flexibility, and compatibility with halogen-free or conventional additives supports high throughput extrusion and strict fire safety or material aging criteria. Formulations are modified for UV resistance and abrasion protection as required for end use such as building wiring or automotive harnesses.

Industry compliance standards

• UL 62, UL 758 (Flexible cords and appliance wiring material)
• IEC 60502 (Power cables with extruded insulation)
• RoHS Directive 2011/65/EU (Restriction of Hazardous Substances)
• IEC 60332 (Tests on electrical cables under fire conditions)

Typical usage ratio

• 35% to 75% EVA in compound by weight, flexibly modified with flame retardants (up to 60%), plasticizers, and stabilizers; ratios tuned for insulation type and fire rating

Downstream process integration

• Compounded on twin-screw extruders; insulation is co-extruded or applied in single pass onto copper or aluminum conductors, followed by cooling, spark testing, and take-up for cutting

Final product types

• Flexible low-voltage power cables and cords
• Halogen-free flame-retardant (HFFR) cable jacketing
• Telephone/data cable insulation sheathings
• Automotive harness and control wiring coverings

5. Film for Greenhouse and Agricultural Covering

Agricultural film converters use this grade as a blend component in multi-layer clear and colored films applied as greenhouse covers, low tunnels, and mulching. Producers capitalize on impact resistance, elongation, and UV/transparency control, which allows crops and soils to be protected while optimizing photosynthetic light. Seasonal climate shifts and crop cycles dictate precise ratios and co-extruded structure specs.

Industry compliance standards

• EN 13206 (Plastic coverings for agriculture and horticulture)
• REACH Regulation (EC) No 1907/2006
• ISO 18601:2013 (Packaging and environment)

Typical usage ratio

• 5% to 25% EVA blended with LDPE/LLDPE in agricultural film formulations; ratios set as per climate demand for frost, mechanical strength, or light diffusion

Downstream process integration

• Co-extrusion with other polyolefins in blown or cast film lines; thickness, width, and puncture resistance tailored on-line, then film is folded and cut for greenhouse sheet or mulch

Final product types

• Greenhouse covering films
• Low tunnel film and row covers
• Colored/light-diffusing mulch films

6. Medical Device Molding and Drug Delivery Systems

Medical polymer processors apply this EVA copolymer in the production of components for drug delivery (such as transdermal patches), IV connectors, and soft parts for medical devices due to its clean extractable profile, flexibility, compatibility with pharmaceutical-grade plasticizers, and biocompatibility. Manufacturing controls are strict and demand traceability from resin lot to final device, with full validation of sterilization and extractables for EU and US health authorities.

Industry compliance standards

• USP Class VI (Biological reactivity tests)
• ISO 10993 (Biological evaluation of medical devices)
• FDA 21 CFR 177.1350 (Ethylene-vinyl acetate copolymers for food and medical applications)
• European Pharmacopoeia 3.1.3, 3.1.6 (Polyolefins for containers and closures)

Typical usage ratio

• 60% to 100% EVA in device or patch compounds, with dosage adjusted for drug reservoir release or tactile performance; loading of active pharmaceutical ingredients varies case by case but rarely affects the base polymer concentration

Downstream process integration

• Material is compounded or directly fed to injection molding or calendaring machines; in transdermal systems, EVA is part of the matrix or skin contact adhesive, followed by sterilization by gamma irradiation or autoclave

Final product types

• Transdermal drug delivery patches
• Flexible medical connectors, infusion device seals
• Plunger tips and cushioning elements for syringes
• IV bag closures and soft isolator components