Applications of Sinopec Yanshan 6J2 EVA in Industrial Manufacturing

Sinopec Yanshan 6J2 EVA is a high-quality ethylene-vinyl acetate copolymer designed for demanding downstream processing sectors. Its balanced mechanical performance, melt fluidity, and purity make it suited for critical industrial applications where consistency, regulatory compliance, and precise formulation are essential. Below are focused industrial application scenarios where 6J2 EVA is implemented in established process flows.

1. Hot Melt Adhesive Formulation for Packaging

In hot melt adhesive manufacturing, our EVA grade supports robust melt strength, excellent adhesion to diverse substrates, and minimal gel formation. It forms the backbone of hot melt formulations used in automated carton sealing and labeling lines, with enhanced processability and efficient set times, fulfilling the technical and compliance demands of the packaging sector.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives for Indirect Food Contact)
• REACH Regulation (EC) No 1907/2006
• EU Regulation No 10/2011 (Plastic materials in contact with food)
• ISO 9001:2015 Quality Management Systems

Typical usage ratio

• 20–35% by weight in core adhesive base; adjusted with hydrocarbon resins and waxes based on needed open and set time, and specific end-use requirements.

Downstream process integration

• Introduced during the initial melt blending phase in high-shear mixers or extruders, EVA co-polymerizes with tackifiers and stabilizers; subsequent extrusion and granulation yields adhesive pellets ready for hot melt glue application lines.

Final product types

• Hot melt adhesive sticks
• Automatic carton sealing adhesives
• Labeling adhesives for food and beverage packaging

2. Solar Photovoltaic (PV) Module Encapsulation

Leading module manufacturers use our EVA for encapsulant films that safeguard solar cells against moisture, thermal shock, and UV degradation. The tightly controlled vinyl acetate content in this grade ensures excellent transparency, superior crosslinking efficiency, and high resistance to yellowing after lamination, meeting the strict reliability standards in utility-scale and distributed solar installations.

Industry compliance standards

• UL 1703 (Standard for Flat-Plate Photovoltaic Modules and Panels)
• IEC 61215 (Crystalline silicon terrestrial photovoltaic modules – Design qualification and type approval)
• IEC 61730 (Photovoltaic module safety qualification)
• RoHS Directive 2011/65/EU

Typical usage ratio

• 100% base polymer for encapsulant sheets; crosslinking additives and UV stabilizers added at 2–5% in downstream compounding.

Downstream process integration

• Feeds directly into film extrusion or calendering lines for sheet formation; subsequently laminated over solar cells before undergoing vacuum lamination, where the EVA sheet crosslinks to protect the cells during module assembly.

Final product types

• Photovoltaic module encapsulant films
• Glass/backsheet laminated PV modules
• Flexible thin-film solar panels

3. Footwear Foam Injection for Sports and Casual Shoes

Shoe sole producers depend on the reliable expansion and mechanical performance of our EVA in foam injection molding. The precise melt index and composition facilitate stable foaming alongside crosslinkers and blowing agents, supporting high-throughput automatic molding while producing soles with consistent density, flexibility, and resilience for the global footwear market.

Industry compliance standards

• EN ISO 20345:2011 (Safety shoes)
• GB/T 15107-2013 (Chinese National Standard for EVA shoes performance testing)
• Oeko-Tex Standard 100 (Textile and footwear safety)
• ISO 9001:2015 (Quality management in footwear)

Typical usage ratio

• 60–90% base polymer within sole compound, adjusted for durometer requirements, expansion ratio, and specific application (sports, sandals, casual shoes); remaining portion comprised of fillers, crosslinkers, and foaming agents.

Downstream process integration

• Integrated at the high-intensity compounding phase to blend with additives; feeds directly into injection molding machines or compression molds for expansion and shaping into finished sole components.

Final product types

• Injected EVA foamed sports shoe soles
• Sandals and beach slippers
• Compression molded midsoles for sneakers

4. Wire and Cable Insulation Compounds

Producers of low-voltage power and communication cables require clean, homogeneous insulation layers. This grade’s melt stability and controlled VA content offer excellent dielectric properties and elongation, accommodating co-extrusion with flame retardants. It ensures cable sheaths and insulations meet global fire and electrical safety certifications for indoor and outdoor installations.

Industry compliance standards

• IEC 60502-1 (Power cables with extruded insulation)
• UL 1581 (Reference standard for electrical wires, cables)
• RoHS Directive 2011/65/EU
• EN 50363-4-1 (Insulating compounds for low-voltage energy cables)

Typical usage ratio

• 35–60% by weight of total cable insulation compound, adjusted with filler, stabilizer and flame retardant loading depending on cable type (power, data, automotive).

Downstream process integration

• Compounded with other insulation additives prior to extrusion; processed through single or twin-screw extruders directly over copper or aluminum conductor cores to form continuous insulation and sheath layers.

Final product types

• Low-voltage power cable insulation
• Automotive wiring harness coverings
• Coaxial and data cable jackets

5. Waterproofing Sheet and Membrane Production

For the construction sector, our EVA is chosen as the core polymer for thermoplastic waterproof membranes used in roofing and foundation protection. Its melt processability and flexibility allow for uniform blending with plasticizers and stabilizers, ensuring consistent extrusion and reliable waterproofing in diverse climate conditions. The compound addresses the need for membranes with high tensile strength, puncture resistance, and chemical inertness.

Industry compliance standards

• EN 13967: Waterproofing membranes for buildings
• ASTM D1970 (Self-adhering polymer modified bituminous sheet materials)
• JG/T 513-2016 (Chinese EVA waterproof sheets standard)
• ISO 14001 (Environmental management for production)

Typical usage ratio

• 40–80% in membrane compound; mixed with softeners, processing aids, and mineral fillers based on end-user performance needs and regional climate.

Downstream process integration

• Fed into internal mixers or twin-screw extruders with co-additives; extruded into continuous rolls or sheets, then calendered or laminated for thickness control and dimensional stability.

Final product types

• Self-adhesive waterproofing rolls (roof, basement)
• Preformed damp proof sheets
• Chemical-resistant geomembranes

6. Toys and Educational Material Molding

Producers of children's toys and EVA foam craft materials utilize this grade for its low VOC profile, clean colorability, and compliant physical performance. The copolymer withstands repeated flexing without cracking or splitting and processes effectively in expandable foam formulations, providing safe, durable, and light products for child use and educational sectors.

Industry compliance standards

• EN 71-3 (European toy safety standard – migration of certain elements)
• ASTM F963 (Standard Consumer Safety Specification for Toy Safety)
• ISO 8124-3 (Safety of toys—Migration of certain elements)
• REACH Annex XVII (Restrictions on hazardous substances in toys)

Typical usage ratio

• 80–100% in base foam compound; ratio varies depending on density, flexibility, and hardness requirements of the final toy or craft product, with minor adjustments for pigment and expansion agent addition.

Downstream process integration

• Batch compounded and transferred to foam sheet extrusion, injection or compression molding cycles; post-processing includes die-cutting or secondary lamination based on product shape and assembly needs.

Final product types

• Foam puzzle mats and play mats
• Floating pool toys
• Educational construction blocks
• Cushioned ball sports toys