Applications of Hanwha TotalEnergies 1315 EVA in Industrial Manufacturing

Hanwha TotalEnergies 1315 EVA is an ethylene-vinyl acetate copolymer with a well-defined melt index and vinyl acetate content. Its physical and chemical characteristics meet the demands of high-performance applications in specialized industrial manufacturing. Below are detailed examples of mainstream downstream sectors utilizing this raw material, focusing on technical usage, regulatory requirements, process integration, and real final products.

1. Solar Photovoltaic Encapsulation

EVA copolymer serves as a primary encapsulant layer in photovoltaic (PV) module production. Manufacturers use it for lamination between solar cells and glass, crucially controlling transmittance, adhesion, crosslinking, and aging resistance. High purity and strict melt flow properties are required to avoid bubble formation and delamination during vacuum lamination and to ensure reliable long-term module output. Batch traceability and contaminant control are vital for utility-scale and residential solar panel modules.

Industry compliance standards

• IEC 61215 and IEC 61730 (PV module performance and safety standards)
• UL 1703 (Standard for Flat-Plate Photovoltaic Modules and Panels)
• RoHS Directive 2011/65/EU (Restriction of Hazardous Substances)
• REACH Regulation (EC) No 1907/2006 (Registration, Evaluation, Authorisation and Restriction of Chemicals)

Typical usage ratio

• 0.40–0.55 mm coating per side (weight varies by cell dimension and film thickness)
• Laminate stack: EVA sheet comprises 25–35% of total stack weight depending on module size and design
• Ratio fine-tuned per cell type (mono, poly, bifacial) and design (glass/glass, glass/backsheet)

Downstream process integration

• Sheet extrusion for EVA melt-compounding
• Vacuum lamination onto solar cell strings between glass and backsheet
• Crosslinking at 140–155°C during lamination cycle for thermal and mechanical stability
• Post-lamination QA: peel strength, light transmittance, gel content tests

Final product types

• Crystalline silicon solar panels (mono/polycrystalline)
• Thin-film PV modules
• Building-integrated photovoltaic (BIPV) glass laminates
• Photovoltaic glass-insulated tiles

2. Hot Melt Adhesives for Packaging

Downstream adhesive formulators use this grade to manufacture pressure-sensitive and hot-melt adhesives for automatic case sealing, carton closing, and specialty label applications. The coefficient of vinyl acetate in this form modifies tack, flexibility, and thermal processing, directly impacting set time and flow under automated dispensing conditions. Additive compatibility and clarity are controlled to improve production throughput, storage life, and performance in high-speed packaging lines.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives for indirect food contact)
• EN 923 and EN 13999 (European Hot Melt Adhesive Standards)
• ISO 9001 quality management systems for adhesives manufacturing
• REACH Regulation (EC) No 1907/2006 for ingredient safety

Typical usage ratio

• 30–55% of total polymer matrix for hot melt formulations
• Ratio adapted according to target viscosity (typically 1,500–25,000 cPs at 180°C)
• Modified with waxes, resins, and tackifiers per performance spec

Downstream process integration

• Direct melt blending with tackifiers, antioxidants, and plasticizing oils
• Batch or continuous extrusion to hot melt granules, pillows, or slugs
• Filling into gun cartridges or automatic feeder drums
• Quality control for softening point, open time, set time, and tensile strength

Final product types

• Case and carton sealing hot melt adhesives
• Label and envelope adhesives
• Tape adhesives for industrial and consumer use
• Pressure sensitive adhesives for specialty packaging

3. Wire & Cable Compounds

Industrial cable and wire manufacturers utilize this EVA as a polymer base in formulations for insulation and jacketing. Its processability and resistance to moisture absorption support high-speed extrusion, while flame-retardant and plasticizer modifiers achieve compliance with safety standards. Melt index and VA content play a key role in flexibility, dielectric strength, and surface finish, especially where cables require resilience in temperature extremes or chemical exposure.

Industry compliance standards

• UL 1581 (Electrical Wires, Cables, and Flexible Cords)
• IEC 60502 (Power Cables with Extruded Insulation)
• RoHS Directive for hazardous substances
• ISO 9001 certified manufacturing requirements

Typical usage ratio

• 40–70% of overall compound formulation as polymer base
• Ratio determined by required mechanical and insulation properties (higher EVA for more flexibility)
• Loading adjusted to integrate inorganic flame retardants (such as ATH) at 40–60% of total mass

Downstream process integration

• Dosing and blending with flame retardants, stabilizers, and pigments
• High-shear melt compounding followed by pelletizing
• Extrusion over copper or aluminum conductors
• On-line QA for dielectric strength, elongation, thermal aging, and abrasion resistance

Final product types

• Low voltage power cables (building wire, appliance wire)
• Instrumentation and control cables
• Flexible electrical cords and cable jacketing
• Halogen-free flame retardant cable compounds

4. Footwear Foam and Injection Molding

Producers of athletic and casual shoes employ this EVA for direct foaming, injection molding, and compression molding of midsoles and outsoles. The vinyl acetate concentration and melt index influence cell structure, elasticity, and resilience—key to cushioning and durability. Manufacturers follow strict input and foaming agent blending controls to optimize recovery rate, tear strength, and finish for demanding performance standards in footwear.

Industry compliance standards

• ISO 20345 (Safety Footwear)
• ISO 17707 (Footwear Test Methods)
• GB/T 15107-2013 (China National Standard for EVA Resin Foam Slippers and Sandals)
• REACH Regulation for chemical safety

Typical usage ratio

• 60–99% EVA as the main polymer in foam block or injection molding formulations
• Blended with blowing agents, crosslinkers, colorants, and fillers
• Adjustments per density (0.18–0.28 g/cm³) and hardness spec (Shore A ranges)

Downstream process integration

• Blend and pelletize EVA with foaming agent, process aids, and masterbatch
• Compression or injection molding with automated mold filling
• Foaming and crosslinking in heated molds by precise temperature and time control
• Secondary finishing: trimming, die-cutting, and surface texturing

Final product types

• Sports shoe midsoles (running, tennis, basketball shoes)
• Casual shoe soles and insoles
• Foam slippers and sandals
• Custom comfort insoles/manufactured inserts

5. Film Extrusion for Agriculture

In agricultural film manufacturing, this copolymer is widely preferred as a modifier for polyethylene co-extrusion. It delivers enhanced flexibility, puncture resistance, and controlled optical properties for greenhouse films, mulching, and silage wraps. Controlled dosing and resin blending recipes influence light transmission, UV stability, shrinkage, and mechanical performance, supporting stable operations in large-scale film blowing and extrusion laminating lines.

Industry compliance standards

• EN 13206 (Plastic Films for Agriculture and Horticulture)
• ISO 9001 certified manufacturing tracking
• EU Regulation (EC) No 1935/2004 for food-contact surface films in select agricultural use
• RoHS and REACH for ingredient management

Typical usage ratio

• 5–18% loading as a modifier with LDPE/LLDPE main matrix
• Concentration increased for higher flexibility or impact resistance
• Blends fine-tuned to light diffusion, anti-UV, and shrink spec

Downstream process integration

• Metering into film-blowing or extrusion laminating with PE resins
• Inline addition of anti-fog, pigment, and UV stabilizing masterbatches
• Quality monitored for haze, tensile strength, and elongation in automated lines
• Finished film rewinding, slitting, and roll-packing

Final product types

• Greenhouse covering films
• Mulching and silage wrap films
• Low-tunnel row covers
• Flexible agricultural bagging

6. EVA-Based Masterbatch Carrier Resin

Color and additive masterbatch manufacturers employ this EVA as a polymer carrier for pigment, UV, antioxidant, and functional filler dispersions. Its melt flow and compatibility with polyolefins ensure even additive distribution during downstream film, fiber, and injection molding processes. The precise integration of this copolymer minimizes plate-out, stabilizes pigment wettability, and secures batch-to-batch color repeatability for end processors.

Industry compliance standards

• ISO 9001 for masterbatch manufacturing
• FDA 21 CFR 177.1350 for food-contact color masterbatch (where applicable)
• REACH and RoHS for regulated substance management
• EN 71-3 (Safety of Toys, for colorants used in toys and childcare products)

Typical usage ratio

• 50–98% of the masterbatch formulation as polymer carrier, depending on pigment/additive loading
• Colorant or additive incorporated at 2–50% by weight
• Carrier content adjusted for flow, let-down ratio, and final application

Downstream process integration

• Direct melt blending with pigment powders, UV or functional fillers
• Twin-screw extrusion granulation, batch or continuous
• Screening and pelletizing for downstream processor use
• Pre-shipment QA for dispersibility, filtration, color intensity, and melt flow

Final product types

• Color and additive masterbatches for film, blow molding, and fiber extrusion
• Conductive or UV-resistant masterbatches
• Pre-colored injection molding pellets
• Functional additive carriers for flame retardants, antistatics, or lubricants