Applications of Asia Polymer EV303 EVA in Industrial Manufacturing

As the manufacturer of Asia Polymer EV303 EVA, we supply this material to critical downstream sectors where performance, compliance, and consistency are essential for industrial scale production. Below, we detail real-world applications across specialized industries, highlighting actual integration points, compliance frameworks, formulation ratios, and tangible end products.

1. Photovoltaic Encapsulant Film Production

Manufacturers in the solar energy supply chain use this grade as a primary resin for encapsulating solar cells in module fabrication. Its balance of flexibility and adhesion supports high transmission and durable lamination. Compliance with photovoltaic reliability standards and batch consistency is essential to ensure weather resistance and field lifetime.

Industry compliance standards

• IEC 61215: Crystalline silicon terrestrial PV modules standard
• IEC 61730: Safety qualification for PV modules
• UL 1703: Standard for safety of flat-plate photovoltaic modules
• REACH (EC 1907/2006) SVHC and RoHS directives for restricted substances

Typical usage ratio

• Ranged at 60–90% by weight in encapsulant film blends
• Adjusted based on copolymer content and specific optical modifiers
• Cross-linking additives (e.g., organic peroxides) typically at 1–3%
• UV stabilizers and adhesion promotors dosed at 0.5–2% of total mix

Downstream process integration

• Film extrusion under controlled temperature (typically 130–150°C)
• Granule feeding into twin-screw extruders with in-line blending
• Post-extrusion lamination directly onto solar cell assemblies
• In-situ crosslinking during module curing under lamination press

Final product types

• Photovoltaic encapsulant films (sheet rolls, cut-to-size mats)
• UV-resistant backsheet films for solar modules
• Integrated multi-layer barrier films
• Custom-shaped encapsulation pads for specialty or bifacial cells

2. Hot Melt Adhesive Formulations

Hot melt adhesive producers utilize this resin variant for its distinct melt viscosity and adhesive strength profile. Asia Polymer EV303 EVA adapts to various blending protocols to deliver stable viscosity and perform across diverse substrates, including wood, paper, and plastics, in packaging, converting, and assembly lines.

Industry compliance standards

• FDA 21 CFR 175.105 for indirect food-contact adhesives
• GB 9685-2016 (China Hygienic Standards for Food-Contact Materials)
• ASTM D3236: Standard Test Method for Melt Viscosity of Hot Melts
• ISO 9001:2015 Quality Management System for traceability and QC

Typical usage ratio

• Base resin content at 28–55% of total hot melt formulation
• Flexible to adjust for polymer/copolymer ratio and application method
• Tackifiers (e.g., hydrocarbon resins) at 25–40%
• Plasticizers and waxes added 5–15% to refine setting speed and bond line

Downstream process integration

• Introduced at primary resin melting stage in sigma mixers or Z-blade mixers
• Combined with additives, tackifiers, and colorants in batch or continuous processing
• Pelletization and cooling prior to packaging as hot melt blocks or pellets
• Direct supply to adhesive coating and application systems for end-use industries

Final product types

• Hot melt adhesive sticks and pellets (industrial and consumer grades)
• Case and carton sealing adhesives for packaging plants
• Furniture edge banding and profile wrapping adhesives
• Pressure-sensitive adhesive (PSA) foundations in glue dot manufacture

3. Footwear Sole and Injection Molding Compounds

Footwear compounders use this material as a core ingredient for injection-molded EVA outsoles and midsoles, targeting shock absorption, resilience, and process consistency. Its fine granular distribution and predictable melt flow facilitate accurate batching and high-throughput injection molding lines, crucial for footwear OEMs and branded product lines.

Industry compliance standards

• GB/T 15107 (Chinese standards for EVA physical properties in shoes)
• EN ISO 20344/20345 for safety, protective and occupational footwear
• ISO 8124-3:2010 for safety of toys – chemical requirements (children’s footwear)
• Phthalate, PAH, and heavy metal screening per REACH annexes XVII

Typical usage ratio

• Blend rates at 50–85% by weight for expanded injection compounds
• Dependent on targeted hardness (Shore A) and rebound performance
• Foaming agents (e.g. azodicarbonamide) 1–3%
• Color masterbatches, anti-static and anti-slip agents at 0.5–2%

Downstream process integration

• Feeding into high-output twin-screw injection molding machines
• Pre-mixing with stabilizers and colorants before compounding
• Optional pre-expansion, direct molding, or closed-mold foaming depending on final product spec
• Post-molding cooling, trimming, and surface finishing

Final product types

• EVA outsoles for athletic and leisure footwear
• Midsoles for running shoes and sandals
• Slip-resistant and anti-fatigue mats
• Children’s molded footwear and insoles

4. Wire & Cable Insulation and Sheathing Compounds

Cable compounders and insulation manufacturers rely on this EVA grade for its dielectric properties and thermal stability in wire and cable jacketing. It enters halogen-free and flame-retardant formulations, supporting compliance with global standards for power, communications, and automotive cable applications.

Industry compliance standards

• UL 1581: Reference standard for electrical wires, cables, and flexible cords
• IEC 60332: Tests on electric cables under fire conditions (Flame propagation)
• RoHS Directive 2011/65/EU and REACH SVHC
• ICEA S-95-658 for cross-linked thermoset polyolefin insulation systems

Typical usage ratio

• Polymer content at 35–65% depending on specific cable insulation thickness and mechanical properties
• Flame retardants (ATH, magnesium hydroxide) added at 30–50%
• Stabilizers and compatibilizers 1–5%
• Plasticizers or cross-linking agents at 1–3%, tailored for extrusion speed

Downstream process integration

• Direct pellet feeding to single or twin-screw extruders for insulation and sheathing
• Reactive or non-reactive extrusion depending on cable type
• Co-extrusion with signal conductors, combination with color masterbatches inline
• Post-extrusion cooling baths and surface inspection for uniformity

Final product types

• Low voltage cable insulation
• Automotive wire sheathing
• Fiber optic cable jacketing
• Control and signal cable insulation compounds

5. Waterproofing Membranes and Building Sheets

Producers in construction materials use this resin in waterproof sheet and geomembrane extrusion, valuing its balance of flexibility, cold crack resistance, and fusion compatibility with commonly used bitumen and thermoplastics. Consistent formulation and adherence to construction and environmental certifications are essential in this civil sector.

Industry compliance standards

• EN 13956: Flexible sheets for waterproofing – Plastic and rubber sheets
• ASTM D4434: Standard specification for poly (vinyl chloride) sheet roofing
• GB 18173.1-2012: Waterproof materials standards in China
• ISO 9001 and ISO 14001 for quality and environment management system

Typical usage ratio

• Resin proportion at 45–70% in waterproof membrane blends
• Adjusted with fillers (calcium carbonate, carbon black) 10–35%
• Plasticizers and process aid agents at 1–8%
• Flagged to rheological adjustments for high-speed extrusion lines

Downstream process integration

• Charged in melt compounding and sheet extrusion lines at 150–180°C
• In-line blending with bitumen, processing aids as required
• Sheet calendaring, embossing, and thickness monitoring post-extrusion
• Roll formation and surface treatment for adhesion or flame bonding

Final product types

• Single-ply roofing membranes for commercial buildings
• Geomembranes for landfill and environmental engineering
• Damp proofing and protective wall barriers
• Waterproofing sheets for foundations and tunnel linings