Applications of LOTTE Chemical SEETEC VE800 EVA in Industrial Manufacturing

LOTTE Chemical SEETEC VE800 EVA is an advanced ethylene-vinyl acetate copolymer offered directly by our manufacturing team for use in specialized industrial applications. We work with downstream producers to ensure precise integration and compliance, supporting scalable and repeatable outcomes across key sectors. Below are primary real-world applications in which our material is actively deployed, outlining standards, usage ratios, integration points, and representative end products.

1. Photovoltaic Encapsulant Film Manufacturing

Leading manufacturers of solar modules rely on VE800 EVA for producing encapsulant sheets that protect and bond photovoltaic (PV) cells. Its controlled vinyl acetate content and melt index facilitate optimal cross-linking and light transmission critical for module durability and energy efficiency. Producers must balance clarity, adhesion, and cross-linking rates to meet strict ISO and IEC standards for PV products. Our technical experts work closely with solar film extruders to refine feedstock dosing based on specific module and lamination line setups.

Industry compliance standards

• IEC 61215: Terrestrial Photovoltaic (PV) Modules – Design Qualification and Type Approval
• IEC 61730: Photovoltaic (PV) Module Safety Qualification
• UL 1703: Standard for Flat-Plate Photovoltaic Modules and Panels
• ISO 9001:2015 (mandatory for encapsulant suppliers to module OEMs)

Typical usage ratio

• 100 wt% in the main encapsulant layer formulation; additives (cross-linking agents, UV absorbers) typically <3 wt% combined. Adjusted based on required gel content and cell structure.

Downstream process integration

• EVA resin is melted and pellet-fed into film extrusion lines to form sheets 0.4–0.6 mm thick, which are then laminated onto PV cells during vacuum lamination at 140–160°C, triggering partial cross-linking in-situ.

Final product types

• PVC-free photovoltaic encapsulant films
• Solar cell modules for rooftop, utility, and BIPV installations
• High-durability outdoor PV laminates

2. Hot-Melt Adhesive Formulations for Packaging

Downstream packaging adhesives manufacturers choose VE800 EVA for hot-melt systems, where melt stability, flexibility, and peel strength control are essential for robust carton, label, and case sealing. The copolymer’s vinyl acetate proportion provides enhanced tack and compatibility with waxes and hydrocarbon resins. Production engineers must fine-tune EVA/admixture ratios for specific substrate combinations and machinery, while adhering to international food contact and safety regulations in food and beverage sectors.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives for indirect food contact)
• EU Regulation (EC) No. 1935/2004 (Materials intended for food contact)
• ISO 22000:2018 (Food safety management system in packaging plants)
• ASTM D1974 (Practice for Methods of Closing, Sealing, and Reinforcing Fiberboard Boxes)

Typical usage ratio

• 20–45 wt% EVA in hot-melt adhesive blends, alongside tackifiers, waxes, and plasticizers. Ratio tailored depending on desired open time and set speed for application equipment.

Downstream process integration

• VE800 pellets loaded into hot-melt adhesive kettles and melted at 140–180°C; formulation applied using nozzle or roller systems onto packaging surfaces. Cooling and crystallization create adhesive bonds.

Final product types

• Box and carton sealing adhesives
• Pressure-sensitive label glues
• Bookbinding hot-melt adhesives
• Case and tray sealing compounds for automated lines

3. Shoe Sole Compound Production

Footwear producers use this EVA grade for shoe midsole and outsole compounding to improve flexibility, impact absorption, and process uniformity. The consistent molecular weight and melt characteristics enable precise foaming and cross-linking to achieve required cushioning and abrasion resistance. Process engineers must comply with intensive footwear testing and control batch-to-batch dosing based on end-use, especially for export-compliant shoes.

Industry compliance standards

• ISO 20871:2018 (Footwear – Outsoles – Test methods for abrasion resistance)
• EN ISO 20345:2022 (Personal protective equipment – Safety footwear)
• GB/T 28011-2011 (Chinese National Standard for Footwear Sole Performance)
• REACH Regulation (EC) No. 1907/2006 (Component substance control)

Typical usage ratio

• 45–70 wt% EVA in sole compounds, depending on density and foaming profile. Adjustments made based on the required hardness (Shore A) and springback.

Downstream process integration

• EVA compounded with blowing agents and cross-linkers in internal mixers; the blend is injection-molded or compression-molded, then foamed at 120–160°C, producing closed-cell structures with required rebound.

Final product types

• Sports shoe midsoles and outsoles
• Slipper and sandal soles
• Work boot and protective PPE shoe soles
• Children’s molded footwear

4. Wire & Cable Insulation and Sheathing Compounds

Electrical and data cable manufacturers integrate this EVA grade into jacketing and insulation compounds to achieve precise electrical resistivity, flexibility, and flame retardancy. The structure ensures smooth extrusion and mechanical stability. Compliance with stringent low halogen and safety norms is essential for reliable cable performance in electronics, automotive, and industrial sectors.

Industry compliance standards

• UL 62: Standard for Flexible Cords and Cables
• IEC 60502-1: Insulated Power Cables with Rated Voltages 1–30 kV
• RoHS Directive 2011/65/EU (Restriction of Hazardous Substances)
• GB/T 2951 (Test methods for insulation and jackets of electric cables and optical cables)

Typical usage ratio

• 25–60 wt% EVA in insulation or sheathing compounds, combined with fillers, stabilizers, and flame retardants. The range depends on flexibility/flame test requirements and cable gauge.

Downstream process integration

• EVA mixed and pelletized with flame retardant additives using compounding extruders; cable manufacturers extrude the blend onto conductors at 150–190°C for uniform coating thickness and dielectric properties.

Final product types

• Low-voltage electrical cable jackets
• Data and communication cable insulation
• Automotive cable sheathing
• Halogen-free, low-smoke wire coatings

5. Film and Sheet Applications in Greenhouse & Agricultural Coverings

Producers of greenhouse and crop protection films depend on EVA for weather-resistant, light-transmitting films with elongation and puncture resistance. Its presence enhances softness and flexibility even at low temperatures, with film producers tuning formulation to meet regional or crop-specific optical and strength requirements. All agricultural films require compliance with well-defined toxicity and performance criteria to ensure crop safety and durability during multi-season exposure.

Industry compliance standards

• ISO 18604:2013 (Recycling of plastics for agriculture, including greenhouse covers)
• EU Directives on plastic materials in contact with food and crops
• ASTM D882 (Tensile Properties of Thin Plastic Sheeting)
• Chinese Agricultural Film Quality Standard (NY/T 1119-2006)

Typical usage ratio

• 8–20 wt% EVA in polyethylene-based agricultural films, with the exact ratio based on flexibility, UV-blocking, and weatherability benchmarks. EVA dosing adjusted to match zone temperature and sunlight levels.

Downstream process integration

• Pellets are dry-blended and co-extruded with LDPE/LLDPE resins in blown film lines; films are then stretched and rolled for conversion into greenhouse or tunnel cladding.

Final product types

• Multi-season greenhouse claddings
• Agricultural mulch and tunnel films
• UV-stable crop protection sheeting
• Flexible frost barrier covers

6. Foam Sheet & Block Production for Sporting and Protective Goods

OEMs for sporting, aquatic, and protective equipment manufacture closed-cell and semi-rigid foam using this copolymer as a core resin. Process operators must adjust densities and cell structures through specific agent blends for performance in shock absorption and flotation. Strict compliance with VOC emission, phthalate, and physical property norms ensures product suitability for end-users in global markets.

Industry compliance standards

• EN 71-3: Safety of Toys – Migration of Certain Elements (for sports/kids gear)
• ASTM F963 (Consumer safety specification for toy safety)
• Phthalate-free and PAH restriction (per REACH Annex XVII)
• ISO 845:2006 (Determination of apparent density of cellular plastics)

Typical usage ratio

• 70–95 wt% EVA in foam formulations, depending on intended density, resilience, and recovery. Lower percentages if using as co-matrix with PE or other rubber, adjusted around functional fillers.

Downstream process integration

• Batch-compounding of EVA with chemical blowing agents and pigments, followed by cross-linking and foaming under controlled heating in molds or continuous foaming lines, producing sheets, rolls, or blocks for die-cutting.

Final product types

• Yoga mats and sport padding
• Protective helmet and guard foam inserts
• Swimming kickboards and pool floats
• Shock-absorbing padding for outdoor and industrial use