Applications of Jiangsu Sailboat V5220N EVA in Industrial Manufacturing

Jiangsu Sailboat V5220N EVA serves as a critical raw material throughout several specialized manufacturing sectors. Its well-defined physical properties and established performance profile enable precise formulation, cost-effective processing, and compliance with sector-specific requirements. Below, we outline actual downstream scenarios where this material delivers direct functional and economic value.

1. Photovoltaic Encapsulant Film Production

Producers of photovoltaic (PV) modules specify V5220N as the principal resin in the co-extrusion or lamination of encapsulant films. This resin grade possesses controlled melt index and vinyl acetate content, supporting consistent flow and reliable long-term performance under thermal stress. Since encapsulant film directly impacts module service life, manufacturers select input resins based on traceable compliance, batch uniformity, and compatibility with advanced EVA crosslinking technologies.

Industry compliance standards

• IEC 61215 (PV module qualification)
• UL 1703 (Standard for Flat-Plate Photovoltaic Modules and Panels)
• RoHS Directive 2011/65/EU compliance
• REACH SVHC regulation

Typical usage ratio

• 65-100% of encapsulant film mass, with minor additives (e.g., curing agent, UV absorber) making up the balance; exact proportion tailored for crosslinking modulus targeting glass adhesion strength.

Downstream process integration

• Enters PV film extrusion or cast film process before roll winding and slab curing; often blended with curing agents and other stabilizers in-line immediately prior to extrusion.

Final product types

• Punched encapsulant sheets for mono and polycrystalline silicon PV module assembly
• High-transparency multilayer encapsulant films for flexible modules

2. Hot Melt Adhesive Manufacturing

Industrial adhesive producers adopt V5220N EVA to impart defined tack, flexibility, and cohesive strength in hot melt formulations. The resin's vinyl acetate level enables precise viscosity tuning across packaging, woodworking, and nonwoven applications. Reliable compounding and melt behavior are essential since end-use customers employ these adhesives under various shear and thermal loadings.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives in food packaging)
• EN ISO 11607 (Packaging for terminally sterilized medical devices, if used in related applications)
• ASTM D3236 (Viscosity of hot melt adhesives)
• EU Regulation (EC) No 1935/2004 (Materials in contact with food)

Typical usage ratio

• 30-60% of total adhesive batch, with formulation modified by required open time, substrate affinity, and mechanical strength; resin content rises for high-flexibility glue sticks or decreases for higher block copolymer blends.

Downstream process integration

• Combined by melt blending with tackifiers, wax modifiers, antioxidants, and processing oils in fully enclosed reaction tanks or twin-screw extruders before pelletization or block molding.

Final product types

• Hot melt glue sticks for packaging equipment
• Pressure-sensitive adhesives for nonwoven hygiene disposables
• Bookbinding and woodworking adhesive pellets

3. Cable and Wire Insulation Compounds

Cable compound manufacturers select this EVA material for power cable insulation and jacketing layers, primarily in low-voltage and automotive harness applications. This grade ensures insulation flexibility, dielectric strength, and durability against environmental factors such as moisture and UV. Downstream processors demand predictable melt flow and clean burning, reducing gel defects and surface pinholes during wire extrusion.

Industry compliance standards

• IEC 60502-1 (Power cables with extruded insulation and their accessories)
• UL 1581 (Electrical wires, cables, and flexible cords)
• CSA C22.2 No. 49 (Flexible cords and cables)
• RoHS and Halogen-Free certification (for green electronics)

Typical usage ratio

• 45-85% by mass in insulation compound; resin loading varies with filler proportion (e.g., ATH for flame retardance) and required mechanical elongation properties.

Downstream process integration

• Pre-mixed with mineral fillers, antioxidants, and process stabilizers in Banbury mixers or compounding extruders; pelletized and directly fed to high-speed wire coating lines for in-line extrusion and annular co-extrusion.

Final product types

• Extruded insulation and jacketing for electrical wiring
• Data and power cable sheaths in consumer electronics and appliances
• Automotive low-voltage harness insulation

4. Footwear Foaming and Injection Compounds

Manufacturers of EVA foam midsoles and shoe components standardize on this grade for injection molding and compression foaming. Key properties—cell structure uniformity, shock absorption, and resilience—arise from consistent resin melt quality and controlled crosslinking behavior. Compounders value tight molecular weight distribution for increased rebound in sports applications and smoother surface finish for fashion and leisure footwear.

Industry compliance standards

• ISO 20344:2021 (Footwear test methods for safety and performance)
• GB/T 15107-2013 (Chinese national standard for sports footwear materials)
• REACH Annex XVII (Restricting use of hazardous substances)
• Prop 65 (if marketed in California, USA)

Typical usage ratio

• 75-90% of base foam compound; adjusts with crosslinking/foaming agent content and the desired density and hardness of the midsole or insole. Typical foam agents added at 3-10% by mass.

Downstream process integration

• Resin fed with blowing agent, crosslinker, pigments, and process aids into high-pressure injection molding machines or batch foam reactors; subsequent molding, expansion at controlled temperature, and surface finishing.

Final product types

• Pre-formed shoe midsoles and insoles for sports, running, and leisure footwear
• Sheet foam for sandals and slippers
• Shoe tongue and collar cushioning elements

5. Solar Backsheet Adhesive Layers

Component manufacturers for PV backsheets utilize this EVA as the adhesive tie layer during multi-layer film lamination. Its specific viscosity range and polarity support strong adhesion between fluoropolymer outer films and PET or polyamide inner layers, conferring lasting delamination resistance during outdoor service. Controlled formulation is critical where weatherability and electrical insulation performance drive product lifecycle costs.

Industry compliance standards

• IEC 61730 (PV module safety qualification requirements for backsheets)
• UL 94 (Flammability of plastic materials)
• TUV Rheinland PV2.5 (Backsheet weathering test protocol)

Typical usage ratio

• Typically 8-15% by backsheet mass, forming a co-extruded or extruded tie-layer between base and outer films; the proportion depends on target peel strength and continuous film thickness.

Downstream process integration

• Processed with co-extrusion or multi-layer laminate systems, applied hot onto pretreated PET substrate, followed by immediate nipping and secondary curing to build sandwich laminate structure.

Final product types

• PV module backsheet films with enhanced interlayer adhesion
• High-durability triple-layered insulation backsheets

6. Sealing and Gasket Compounds for Appliances

Producers of flexible gaskets and seals for refrigeration and home appliances employ this EVA grade as a principal polymer to balance elasticity, dimensional stability, and process yield in continuous extrusion lines. Its thermal behavior and resilience provide tight sealing properties for door gaskets, where repeated compression and recovery are critical to end-use performance, while supporting high pigment and filler absorption without processing instability.

Industry compliance standards

• EN 60335-1 (Safety requirements for electrical appliances)
• UL 746C (Polymeric materials for use in electrical equipment)
• GB 4706 (Chinese appliance safety standard)
• REACH and RoHS as applicable

Typical usage ratio

• 55-95% in gasket base formulation, adjusted according to hardness, rebound properties, and migration limits for use in cold or warm appliance environments.

Downstream process integration

• Resin is compounded with fillers, color masterbatch, and slip agents using twin-screw extruders; the blend is extruded through multi-cavity profile tools or injection molded for customized sealing geometries, followed by in-line cooling and coiling or cutting for finished dimensions.

Final product types

• Flexible door seals for domestic refrigerators and freezers
• Water-resistant gaskets for washing machines
• Formed seals for small home appliances