Applications of LOTTE Chemical SEETEC VA900 EVA in Industrial Manufacturing

LOTTE Chemical SEETEC VA900 EVA is manufactured to meet the stringent technical demands of large-scale industrial processors, supplying end-use producers with a reliable and high-purity ethylene vinyl acetate copolymer. We collaborate closely with global manufacturers to ensure precise compliance, consistent physical properties, and reproducible downstream performance across established market segments. Below, we outline field-proven use cases for VA900 EVA according to specific production, regulatory, and market requirements.

1. Photovoltaic Encapsulation Films for Solar Module Lamination

Major solar module producers require consistent EVA grades for encapsulating photovoltaic cells, demanding stable crosslinking, clarity, and anti-degradation properties. SEETEC VA900 EVA supports precise melt flow and high vinyl acetate content, essential for optical transmission and module reliability through the lamination process.

Industry compliance standards

• IEC 61215 (Crystalline silicon terrestrial PV modules—design qualification and type approval)
• UL 1703 (Standard for Safety: Flat-Plate Photovoltaic Modules and Panels)
• ISO 9001:2015 for quality management systems in materials supply
• RoHS Directive (Restriction of Hazardous Substances)

Typical usage ratio

• Used at 100 wt.% as the main encapsulant layer; additive loadings (photoinitiators or UV absorbers) typically <2% by weight, adjusted based on panel design and lamination speed

Downstream process integration

• VA900 EVA enters the film extrusion line as resin pellets, is compounded with minor additives, extruded as a sheet, then cut and laminated under vacuum onto cell arrays using thermal crosslinking in heated press cycles

Final product types

• Photovoltaic module encapsulant film rolls
• Laminated PV panels (framed and frameless)

2. Hot Melt Adhesives in Packaging and Bookbinding

Industrial packaging and printing plants utilize VA900 EVA to modify viscosity and adhesion profiles in hot melt adhesive formulations, ensuring tack, bond strength, and flexibility over a range of ambient and service temperatures. The high VA content of this grade maintains adhesive flow at low application temperatures for automated high-speed lines.

Industry compliance standards

• FDA CFR 21 175.105 (Adhesives for food packaging use, where indirect food contact is required)
• REACH registration for chemical safety compliance in adhesives
• ISO 14001 for environmental management in adhesive manufacturing

Typical usage ratio

• 5%–35% by total adhesive formulation weight, increasing with flexibility and low-temperature requirements; adjusted per end-use substrate and machine line speed

Downstream process integration

• Blended with tackifiers, waxes, and stabilizers in high-shear melt mixers, then pumped to extrusion or slot-die application units for coating onto packaging materials, labels, and paper spines

Final product types

• Hot melt adhesive pellets and blocks
• Automated bookbinding glues
• Case, carton, and wrap packaging adhesives

3. Wire and Cable Insulation Compounds

The cable industry demands EVA copolymer grades for primary and secondary insulation layers, providing required dielectric strength, processability, and flame resistance. SEETEC VA900 EVA supports stable extrusion, ensuring insulation integrity for power, communication, and flexible appliance wiring.

Industry compliance standards

• IEC 60227 (Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V)
• UL 62, UL 758 (Flexible cords and appliance wiring material standard)
• RoHS and REACH compliance for hazardous substance management

Typical usage ratio

• 30%–55% by compound weight; higher loading used for soft, flexible insulation with improved cold resistance, adjusted according to flame retardant or filler content

Downstream process integration

• Compound blended in an internal mixer or twin-screw extruder with flame retardants, fillers, colorants; direct extrusion applied onto wire conductors as insulation or sheathing layer

Final product types

• Cable insulation pellets
• Finished power and telecommunications cables
• Flexible appliance wires

4. Foam Sheets for Footwear and Sports Equipment

Molded EVA foam is key for midsole cushioning and protective padding in footwear and sports goods, where VA900’s cell structure control, rebound elasticity, and tear resistance meet strict durability standards. Major footwear integrators rely on this grade for batch-to-batch consistency in expansion and skin formation.

Industry compliance standards

• ISO 20871 (Footwear—Test methods for outsoles—Abrasion resistance)
• REACH registration for consumer article safety
• Oeko-Tex Standard 100 (harmful substance testing for finished foam article)

Typical usage ratio

• 60%–90% of total foam compound, formulated with chemical blowing agents (azodicarbonamide, etc.) and crosslinking agents; ratio modified for foam density and sheet thickness

Downstream process integration

• EVA compounded and mixed with blowing/crosslinking agents, sheet extruded, then foamed and cured under heat in molds or autoclaves; post-processing by die-cutting or lamination for shoe assembly or padding parts

Final product types

• Midsoles and insoles for athletic or casual shoes
• Protective foam sheets for helmets and guards
• Yoga mats, sports flooring, and play mats

5. Flexible Film for Agricultural Greenhouse Covers

Producers of agricultural greenhouse films choose this EVA grade for enhanced elasticity, low-temperature durability, and improved light transmission, crucial in centimeter-to-meter scale co-extruded multilayer structures. The material reduces brittleness and maintains film performance over extended field exposure.

Industry compliance standards

• EN 13206 (Plastic films for agricultural use—Specifications for polyethylene-based films)
• ISO 9001:2015 for quality assurance in film extrusion
• REACH compliant with additive disclosure where required

Typical usage ratio

• 5%–25% by weight in PE-based film blends, optimized for latitude, climate, and target mechanical properties; higher ratios for winter or high-altitude tunnels

Downstream process integration

• EVA is dry blended or compounded with LDPE/LLDPE, extruded via blown film lines, and formed into single-layer or multi-layer films; additives may include UV stabilizers and anti-drip agents

Final product types

• Greenhouse cover films (single- and multi-season)
• Tunnel and mulch films for horticultural use

6. Thermal Lamination Films for Graphic and Packaging Laminates

Specialty laminating film manufacturers use VA900 EVA as coextruded or coated adhesive layers for print and board lamination, providing reliable bond, clarity, and curl resistance. Its controlled melt viscosity and transparency deliver printability and handling stability for both dry and wet lamination processes.

Industry compliance standards

• EN 12367 (Laminated film specifications for packaging)
• FDA CFR 21 177.1520 (Indirect food contact—components of articles for packaging, holding, or transporting food)
• ISO 9001:2015 for certified film output

Typical usage ratio

• Applied at 8–30 gsm (grams per square meter) adhesive deposition, as 10%–25% of total film gauge in multi-layer construction; selection based on substrate and final roll handling requirements

Downstream process integration

• EVA resin transformed into adhesive layer by coextrusion or by hot-melt coating onto BOPP or PET substrate films, then rewound as lamination rolls for print shops and board converters

Final product types

• Thermal lamination films for publishing and packaging
• Glossy and matte transparent laminates for paperboard, cartons, and flexible pouches