Applications of BASF Lupolen V EVA in Industrial Manufacturing

BASF Lupolen V EVA (ethylene vinyl acetate copolymer) provides a combination of flexibility, processability, and compatibility that meets the needs of specialized sectors in plastics and polymer processing. Below, we detail key industrial downstream applications, demonstrating real-world use in established sectors along with the technical specifics required for production operations, formulation, and regulatory compliance.

1. Photovoltaic Encapsulant Films for Solar Modules

Downstream processors rely on Lupolen V EVA as a critical raw material in producing encapsulant films that protect and insulate solar cells. The copolymer’s clarity, adhesive characteristics, and thermal stability support lamination processes and long-term field durability, accommodating strict standards for solar energy installations. Producers fine-tune vinyl acetate content and additives for optimal module performance, adjusting formulation based on local climate and panel design.

Industry compliance standards

• IEC 61215: Terrestrial Photovoltaic Modules - Design Qualification
• IEC 61730: Photovoltaic Module Safety Qualification
• UL 1703: Standard for Flat-Plate Photovoltaic Modules
• RoHS Directive 2011/65/EU (Hazardous Substances Restriction for Electrical Equipment)

Typical usage ratio

• 64–75% by weight of total encapsulant formulation, adjustable for cell type and film thickness

Downstream process integration

• Compounding with crosslinkers, antioxidants, and UV stabilizers prior to extrusion or calendering into films; films are then laminated onto solar cell assemblies during module fabrication

Final product types

• Semi-finished and finished photovoltaic laminating films
• Solar panel encapsulant sheets
• Photovoltaic module sandwich structures

2. Hot Melt Adhesives for Hygiene and Packaging

Manufacturers of hot melt adhesives utilize this EVA copolymer to achieve a balance between adhesion, flexibility, and processing temperature in formulations for hygiene disposables and case/carton packaging. The polymer offers fast setting times and reliable flow properties required by high-speed applicators on modern converting lines. Particle size, vinyl acetate content, and melt index are selected in close coordination with downstream adhesive compounders for targeted open time, tack, and peel strength profiles.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives for Indirect Food Contact)
• ISO 9001:2015 (Quality Management Systems for Adhesive Production)
• REACH Regulation (EC) No 1907/2006
• Ecolabel EN 13432 (Compostability, where applicable for hygiene products)

Typical usage ratio

• 20–45% by weight in hot melt adhesive blends, modulated according to targeted viscosity, flexibility, and service temperature requirements

Downstream process integration

• Direct blending with tackifiers, waxes, and stabilizers in batch mixers or co-extruders; granules or pellets are melted and applied via slot die or spray nozzles on automated packaging or hygiene supply lines

Final product types

• Adhesive cartridges and pillows
• Disposable diaper construction adhesives
• Case and carton sealing adhesives
• Sanitary napkin and tissue laminates

3. Cable Sheathing and Insulation Compounds

Wire and cable compounders incorporate Lupolen V EVA to formulate insulating and jacketing materials with enhanced flexibility and dielectric strength. This material supports flame retardant compounding and retains performance under variable thermal and moisture conditions, essential for both low-voltage and medium-voltage cable systems in power and telecommunication. Additive loading and melt rheology are customized for high-throughput extrusion using modern cable production lines.

Industry compliance standards

• IEC 60502 (Power Cables with Extruded Insulation)
• UL 1581 (Electrical Wires, Cables, and Flexible Cords)
• EN 50363-1 (Insulating Compounds – EVA Class)
• RoHS Directive 2011/65/EU

Typical usage ratio

• 25–38% by weight in cable insulation formulations, tailored for flame retardancy and mechanical resilience based on end-use voltage and flexibility needs

Downstream process integration

• Pre-mixed with flame retardants, plasticizers, and stabilizers, then pelletized for transfer to melt extruders where cable conductors are jacketed or insulated in-line

Final product types

• Flexible power cable jackets
• Telecommunication cable insulation layers
• Control, signal, and instrumentation cable sheathing

4. Injection Molding for Footwear Soles

Shoe manufacturers rely on this grade of EVA in producing lightweight, impact-absorbing midsoles and outsoles via injection molding. Processors benefit from its uniform cell structure formation and customizable hardness, supporting consistent cushioning and slip-resistance standards demanded in global sports, leisure, and safety footwear markets. With close control of melt index and cell nucleation, footwear compounders optimize density and rebound characteristics for each product line.

Industry compliance standards

• ISO 20871:2018 (Footwear – Test Methods for Outsole Properties)
• ISO 9001:2015 (Quality Management for Footwear Manufacturing)
• REACH Regulation (EC) No 1907/2006
• Oeko-Tex Standard 100 (Human-Ecological Safety of Footwear Materials)

Typical usage ratio

• 60–85% by weight of sole compound, adjustable for end-use comfort and density requirements; minor modification with blowing agents or crosslinkers as needed

Downstream process integration

• Dry blending with crosslinkers, blowing agents, pigments, and stabilizers, then melt compounded prior to injection molding into sole and midsole forms; cell structure and expansion controlled by molding pressures and temperature profile

Final product types

• Sports footwear midsoles and outsoles
• Leisure and beach sandal soles
• Industrial and safety shoe sole platforms

5. Flexible Foam Sheets for Packaging and Padding

Producers of protective packaging and cushioning materials formulate foam sheets from this EVA to achieve closed-cell structure, impact absorption, and tactile smoothness for sensitive electronics, medical devices, and automotive parts. Blowing agent selection and crosslinking rates determine the final foam density and compression set properties, ensuring compliance with diverse global product safety and transport protection standards in high-value applications.

Industry compliance standards

• ASTM D3575 (Flexible Cellular Materials—Physical Properties)
• ISO 2230:2021 (Rubber Products – Storage Guidelines)
• EN 71-3: Safety of Toy Materials (for packaging of children’s goods)
• REACH Regulation (EC) No 1907/2006

Typical usage ratio

• 70–95% by weight in foamable compound, customized for target compression strength and cell density in finished sheets or rolls

Downstream process integration

• Melt compounding with expanding agents, crosslinking additives, and colorants; extruded and foamed in continuous sheets, followed by crosslinking (electron-beam or chemical) and cutting into protective pads or inserts

Final product types

• Protective packaging foam sheets and rolls
• Electronics and appliance cushioning pads
• Automotive component liners
• Medical instrument protective trays

6. Sealants and Caulks for Construction Applications

Producers of construction sealants formulate high-flexibility caulks using this EVA as a base for one-part and two-part systems. The copolymer’s compatibility with plasticizers and modified fillers ensures adhesion to diverse substrates, low-temperature flexibility, and stable performance under repeated expansion and contraction cycles, aligning with building envelope requirements in both interior and exterior joints. Process adjustments target flow, extrudability, and cure profile for automated or manual application tools.

Industry compliance standards

• ISO 11600: Building Construction – Sealants Classification
• EN 15651: Sealants for Non-Structural Use in Buildings
• LEED v4: Low VOC Construction Materials
• REACH Regulation (EC) No 1907/2006

Typical usage ratio

• 15–28% by weight in caulk and sealant bulk mixture, balanced with plasticizers and modified resins depending on required elongation and service life

Downstream process integration

• Direct incorporation into pre-mixers with rheology modifiers, fillers, and cure promoters; final formulation is de-aerated and filled into cartridges for bulk or gun-grade application

Final product types

• Construction expansion joint caulks
• Window/door perimeter sealants
• Floor and wall crack fillers
• Interior and exterior weatherproofing beads