Applications of Jiangsu Hongjing 6020MF EVA in Industrial Manufacturing

Jiangsu Hongjing 6020MF EVA serves as a critical copolymer material in various industrial manufacturing chains. Its controlled melt index and vinyl acetate content fit the needs of multiple conversion processes, creating downstream products that demand precise mechanical performance, clarity, and adhesion. Below, we detail key application sectors and technical integration based on real customer use cases.

1. Photovoltaic Encapsulation (EVA Film for Solar Modules)

Solar panel manufacturers employ this grade in the lamination layers of photovoltaic modules. The formulation ensures optical transparency and suitable crosslinking for electrical insulation and weather resistance. 6020MF’s melt flow properties allow direct blending with crosslinking agents and stabilizers before extrusion and film casting. Process control focuses on gel content, shrinkage, and bubble minimization, enabling high line yields and module longevity.

Industry compliance standards

• IEC 61215: Terrestrial Photovoltaic (PV) Module Design Qualification and Type Approval
• UL 1703: Standard for Flat-Plate Photovoltaic Modules and Panels
• RoHS Directive (2011/65/EU): Restriction of Hazardous Substances
• ISO 9001:2015 Quality Management Systems (for process control and traceability)

Typical usage ratio

• Film formula contains 60–90% 6020MF EVA resin, with 1–5% crosslinker and 0.1–1% UV stabilizer; ratio adjusted for module transparency, crosslinking speed, and heat resistance requirements

Downstream process integration

• Direct introduction into film extrusion lines after pellet premixing, followed by calendaring, cooling, and crosslinking either thermally or photochemically during lamination

Final product types

• Photovoltaic encapsulant film rolls
• Backsheet-laminated modules
• Flexible solar laminates
• BIPV roofing elements

2. Hot Melt Adhesive Manufacturing

Pressure-sensitive and hot melt adhesive producers select this EVA as a polymeric base to control open time, tack, and adhesion. The vinyl acetate content provides necessary softness in packaging and woodworking applications. 6020MF enters the formulation at the premix or continuous blending stage, usually with hydrocarbon tackifiers and waxes. Close monitoring of blend temperature and shear ensures homogeneous dispersion, critical for consistent bond strength and appearance.

Industry compliance standards

• FDA 21 CFR 175.105: Adhesives (for food contact packaging adhesives)
• REACH Regulation (EC) No 1907/2006: Chemical Registration for Europe
• ASTM D1876: Peel Resistance of Adhesives
• ISO 9001/ISO 14001: Quality and Environmental Management Systems

Typical usage ratio

• EVA content typically 35–55% of the total adhesive formula; ratio varies by application (higher for edge banding, lower for pressure-sensitive formats)

Downstream process integration

• Pellet addition to heated mixing kettles or reactors; blended with tackifiers and plasticizers, then pumped to extrusion or drum filling lines

Final product types

• Hot melt adhesive blocks and pillows
• Bookbinding spine glue
• Automotive interior assembly adhesives
• Carton and case sealing adhesives

3. Flexible Packaging Film Production

Film manufacturers incorporate this grade in multilayer co-extruded structures for food and medical packaging. Its compatibility with LDPE and linear PE ensures sealability and puncture resistance. 6020MF is dosed into the extruder either pure or masterbatched, allowing tailored oxygen and moisture barrier properties. Careful temperature control prevents thermal degradation, supporting safe food contact compliance.

Industry compliance standards

• FDA 21 CFR 177.1350: Ethylene-vinyl acetate copolymers for food contact
• EU Framework Regulation (EC) No 1935/2004: Food Contact Materials
• ISO 22000: Food Safety Management System for packaging plants
• EN 12301: Packaging—Flexible Film

Typical usage ratio

• 10–30% in multilayer film blends; adjusted based on sealant fraction or oxygen transmission performance

Downstream process integration

• Direct compounding and feeding into blown or cast film extruders; used as inner or intermediate layer in lamination

Final product types

• Vacuum pouch inner films
• Medical IV bag films
• Fresh food tray lidding films
• Sterile pharmaceutical packaging films

4. Cable and Wire Insulation Compounds

Electrical cable compounders value 6020MF for flexibility and non-migration in low- and medium-voltage insulation and jacketing. EVA base resin is melt-compounded with flame retardants, antioxidants, and anti-block agents. Fusion and mixing control at this processing stage are essential for electrical safety and compliance. The crosslinking profile and compatibility with metal conductors or fillers define the performance specifications for high-usage environments.

Industry compliance standards

• UL 1581: Reference Standard for Electrical Wires, Cables, and Flexible Cords
• IEC 60502: Power Cables with Extruded Insulation and Their Accessories
• RoHS and REACH for hazardous substance limitations
• ISO 14001: Environmental Management in cable production

Typical usage ratio

• Base EVA content typically 55–80% of the compound; adjusted for flame retardant loading and flexibility requirements

Downstream process integration

• Dosed into internal mixers or twin-screw extruders, followed by granulation and pelletizing for further cable extrusion lines

Final product types

• Low-smoke zero-halogen (LSZH) cable insulation
• Flexible power cord jacketing
• Automotive signal cable coatings
• Data and signal cable sheaths

5. Foam Injection Molding and Sheet Extrusion

Footwear, sports goods, and packaging foam makers introduce 6020MF for its balance of elasticity, resilience, and processability. Foaming agents and crosslinkers integrate with the resin in mixing hoppers, proceeding to injection or extrusion under controlled pressure ramps. Formulation tuning depends on required cell structure and cushioning property. Curing and cooling steps maintain dimensional stability and end-use durability.

Industry compliance standards

• ISO 20344 & ISO 20345: Safety Footwear Standards (for footwear midsoles and insoles)
• REACH compliance for consumer products
• ISO 18562-2: Biocompatibility for medical foam applications
• GB/T 19875: EVA Foam Sheet (China National Standard)

Typical usage ratio

• 50–95% EVA base, blended with 2–10% crosslinker and 1–8% blowing agent; ratios shift by density and compression set properties targeted

Downstream process integration

• Dry blending and feeding into foam extruder or injection barrel, continuous expansion and curing, then molding or sheeting as required

Final product types

• Sports shoe midsoles and outsoles
• Shock-absorbing foam pads
• Protective packaging inserts
• Medical cushion and splint foams

6. Solvent-Based Ink and Coating Formulation

Manufacturers of flexible gravure and flexographic inks rely on this copolymer as a resin binder to ensure pigment adhesion and print integrity on non-polar surfaces. Dissolved in ester or aromatic solvents, 6020MF enables dispersibility and gloss in low-temperature curing processes. Formulation adjustment correlates with ink viscosity, mileage, and drying speed, which are essential for high-speed packaging printing lines.

Industry compliance standards

• EN 1230-2: Printing Inks—Odour and Taste Transfer for Food Packaging
• Swiss Ordinance on Materials and Articles in Contact with Food (SR 817.023.21)
• ISO 2836: Resistance of Printed Material to Solvents
• GMP Regulation (EC) No 2023/2006: Good Manufacturing Practice for Printing Inks

Typical usage ratio

• Solid content ranges from 10–30% EVAc binder, depending on ink type and viscosity required for the printing substrate

Downstream process integration

• Resin loading into solvent blends, followed by high-speed mixing with pigment dispersions; fed into ink milling and filtration steps

Final product types

• Flexible packaging gravure inks
• Plastic film overprint coatings
• Pressure-sensitive label inks
• Industrial bag flexo print inks