Applications of BASF-YPC V4110D EVA in Industrial Manufacturing

BASF-YPC V4110D EVA is a specialized ethylene vinyl acetate copolymer offering consistent performance attributes tailored for demanding industrial applications. Our formulation control and technical support ensure precise integration into manufacturing processes where durability, flexibility, and defined polymer behavior are required. Below, we detail prominent sectors utilizing this material, with a focus on established downstream uses, regulatory frameworks, formulation practice, integration stages, and typical end products.

1. Photovoltaic Encapsulant Film Production

V4110D EVA is utilized extensively in solar panel encapsulant films, where its controlled melt index and vinyl acetate content support high transparency and elasticity, essential for module durability over diverse environmental conditions. The copolymer is co-extruded with crosslinking agents and processing aids to create interlayers that protect PV cells from humidity, UV, and mechanical stresses, enabling stable wattage output throughout service life. Processing conditions are tightly managed to ensure consistent crosslinking ratios and optical quality.

Industry compliance standards

• IEC 61215 (Crystalline silicon terrestrial PV modules – Design qualification and type approval)
• UL 1703 (Flat-Plate Photovoltaic Modules and Panels)
• TÜV Rheinland 2PfG 1169/08.2007 (Encapsulation materials for PV modules)
• RoHS Directive (EU Restriction of Hazardous Substances)

Typical usage ratio

• 68% to 71% of total film formulation, with minor adjustments based on co-extruded layer thickness and desired elasticity; the ratio aligns with requirements for UV absorption and cell adhesion characteristics while allowing sufficient crosslinking for mechanical stability.

Downstream process integration

• Melt compounding and extrusion into sheet, combined with silane crosslinkers; sheets undergo lamination and crosslinking (typically at 140–155°C for 15–20 minutes) in vacuum laminators prior to sandwiching between PV glass and cells.

Final product types

• Photovoltaic solar module encapsulant films (sheet or roll form)
• Backsheets for crystalline and thin-film solar panels

2. Hot Melt Adhesive Formulation

In the adhesives sector, V4110D EVA acts as the primary polymer backbone in hot-melt adhesive sticks and granulates. Its specific VA content balances adhesive strength and flexibility, key for bookbinding, packaging, woodworking, and hygiene product assembly. Blending with specific tackifiers and plasticizers allows manufacturers to target set times and bond strengths for automated application lines. Batch certification ensures melt viscosity and flow stability, crucial for precise machine dosing and consistent bonding performance.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives for food packaging indirect contact)
• GB 9685-2016 (China National Food Safety Standard for adhesives in food contact materials)
• ASTM D1876 (Peel Resistance of Adhesives)
• ISO 9001:2015 for batch quality management in adhesive manufacture

Typical usage ratio

• 30% to 42% polymer by mass within the adhesive formulation, adjusted based on the desired open time, viscosity, and pot life—the ratio shifts by application (e.g., higher for woodworking stick adhesives than carton closing).

Downstream process integration

• Direct blending with tackifiers, waxes, and anti-oxidants in melt mixers or twin-screw extruders; granulation or molding into rods/sticks; cooled and pelletized for automatic line feeding; hot-applied by slot, spray, or bead in user facilities.

Final product types

• Hot melt adhesive sticks for packaging and case sealing
• Granular hot melt adhesives for hygiene and non-woven lamination
• Adhesive pillows for woodworking assembly lines

3. Footwear and Sports Sole Compounds

The polymer supports high-performance requirements in footwear midsoles and outsoles, especially in sports and leisure products demanding shock absorption and flexibility. Technical control in foaming and compounding stages, paired with pigment and crosslinking additive compatibility, ensures continual batch uniformity, light weight, and uniform cell morphology throughout sole production. End applications require systematic physical property checks and migration resistance suited for extended wear.

Industry compliance standards

• EN ISO 20344:2021 (Personal protective equipment – Test methods for footwear)
• GB 20400-2006 (Limit of harmful substances in leather and footwear)
• REACH (EC No 1907/2006 for chemical safety in consumer goods)
• Phthalate-free and PAH control (QA to customer and OEM requirements)

Typical usage ratio

• 55% to 70% of the total compound formulation, modulated for desired density, spring-back, and surface resilience; lower content used for ultra-light soles with high expansion agents.

Downstream process integration

• Blended in high-shear mixers with blowing agents, fillers, crosslinkers, and color pigments; preform shaped via injection molding, sheet extrusion, or compression molding, followed by foaming/curing at controlled temperature and pressure; batch QC for cell structure and physical tests.

Final product types

• EVA foam midsoles for sneakers and sport shoes
• Molded slipper and sandal outsoles
• Shock absorption pads for athletic and occupational footwear

4. Cable Insulation and Sheath Compounding

Within the wire and cable industry, V4110D EVA is compounded as a base resin for low-voltage cable insulation and sheathing, giving flexibility, flame resistance, and environmental stress crack resistance. The resin’s melt index and tailored VA content support easy compounding with flame retardants (e.g., ATH, magnesium hydroxide) and process oils, supplying stable rheological properties needed for high-speed cable extrusion, strict dielectric strength, and elongation targets in finished goods.

Industry compliance standards

• IEC 60502-1:2016 (Power cables with extruded insulation and their accessories for rated voltages)
• UL 62 / UL 758 (Flexible cords and appliance wiring material)
• RoHS Directive (Restriction of Hazardous Substances in electrical equipment)
• GB/T 8815-2008 (Chinese standard for cable insulation compounds)

Typical usage ratio

• 20% to 35% of the insulation or sheath compound by weight, with balance as flame retardant additives and plasticizers; the VA level modulates the pliability and processability for target cable diameter and flexibility norms.

Downstream process integration

• Dosed into high-intensity mixers with flame retardants and stabilizers, followed by pelletization; extruded as insulation or jacket layer onto conductors using tandem extrusion lines, typically with in-line curing for crosslinked variants.

Final product types

• Low-voltage power cable insulation
• Flexible control and appliance cable sheathing
• Specialty profiles for signal and data transmission cables

5. Film and Sheet for Packaging (Non-food)

This copolymer is a core raw material in industries producing flexible films and sheets for technical packaging, surface protection, and industrial laminates. The melt processing window and VA content assure consistent gauge control and impact performance, while compatibility with anti-block and slip agents supports downstream lamination and surface printability. Finished material passes rigorous batch-to-batch QC to meet customer procurement protocols and performance guarantees under extended storage or shipping cycles.

Industry compliance standards

• ASTM D882 (Tensile Properties of Thin Plastic Sheeting)
• EN 13934-1 (Tensile Strength and Elongation of textile fabrics for industrial films)
• ISO 9001:2015 for process quality and traceability
• REACH registration for non-food contact packaging applications

Typical usage ratio

• 60% to 95% of base formulation for cast or blown extrusion, depending on desired mechanical properties and thickness; additives such as slip agents and anti-statics constitute the remainder.

Downstream process integration

• Blended and compounded with functional modifiers; processed in blown film or cast film lines with automated thickness control and surface finishing units; subjected to corona treatment prior to rewinding and slitting for customer dimensions.

Final product types

• Durable technical packaging films (e.g., protective wrap, mattress bags)
• Surface protection sheets for electronics or glass transport
• Industrial laminate base films