Applications of Hanwha TotalEnergies E156W EVA in Industrial Manufacturing

Hanwha TotalEnergies E156W EVA is a specialty-grade ethylene-vinyl acetate copolymer widely used for its balance of flexibility, clarity, and processing efficiency. Our manufacturing expertise ensures that this material meets the demanding standards of global industrial customers, and integrates smoothly into a range of high-performance downstream processes. Below, we outline major industrial applications supported by established standards, technical handling, and end-product references.

1. Photovoltaic Encapsulant Films for Solar Modules

E156W grade EVA serves as a primary encapsulation layer in crystalline silicon and thin-film solar panel manufacturing, enhancing panel durability and transmission. This grade’s melt index and clarity enable a controlled lamination process critical for module performance. Our material is integrated during the lamination phase, embedding photovoltaic cells under vacuum and heat, ensuring optical stability and weathering resistance necessary for long-term energy generation.

Industry compliance standards

• IEC 61215:2021—Terrestrial photovoltaic (PV) module design qualification and type approval
• UL 1703—Flat-plate photovoltaic modules & panels safety standards
• RoHS Directive 2011/65/EU—Restriction of hazardous substances in electronics
• IEC 61730—PV module safety qualification

Typical usage ratio

• Encapsulant content: 400–600 g/m² per module (dependent on cell type and thickness specification)
• Core encapsulant layer often represents 10–18% of total module weight; ratio adjusted for cell size and layer combinations

Downstream process integration

• Material placed above and below PV cells
• Vacuum lamination at 140–155°C for cross-linking
• Integrates prior to backsheet and glass assembly
• QC testing on gel content and transmittance post-lamination

Final product types

• Monocrystalline and polycrystalline solar panels
• Thin-film PV modules
• Building-integrated photovoltaics (BIPV)
• Flexible and semi-flexible solar sheets

2. Hot Melt Adhesives for Packaging and Hygiene Products

E156W EVA is processed into hot-melt adhesive (HMA) base formulations, providing flexible bonding for paper, board, synthetic fibers, and select plastics. In production, granulated EVA is compounded with tackifiers and waxes to control open time, viscosity, and strength. The resin’s vinyl acetate content allows precise control of adhesive properties throughout extrusion and coating processes within high-speed industrial lines.

Industry compliance standards

• FDA 21 CFR 175.105—Adhesives for indirect food contact (packaging)
• EN 71-3—Safety requirements for toys (migration of certain elements)
• ISO 9001—Quality management systems for adhesive manufacture
• REACH Regulation (EC) No 1907/2006—Chemical registration for safe use in EU

Typical usage ratio

• EVA base: 20–45% of adhesive mass, adjusted for required flexibility and melt viscosity
• Ratio customized depending on substrate compatibility (cardboard, nonwovens, film)

Downstream process integration

• Compounded in continuous mixers with tackifiers, waxes, and stabilizers
• Pellets are fed to hot-melt tanks at 120–170°C, then slot-die or spray applied
• Applied to substrates pre-assembly or closure
• Cooling zone solidifies adhesive for immediate handling

Final product types

• Spine glues for bookbinding
• Carton and case sealing adhesives
• Personal care hygiene product adhesives (diaper construction, feminine hygiene tapes)
• Label and envelope adhesives

3. Wire & Cable Sheathing Compounds

Our EVA resin supports the production of halogen-free, flame-retardant wire and cable sheathing. The polymer matrix delivers electrical insulation and mechanical flexibility vital in power, automotive, and consumer cable production lines. Sheathing compounds incorporate E156W EVA with flame retardants via twin-screw extrusion, forming low-smoke, durable layers that meet strict safety requirements.

Industry compliance standards

• IEC 60332—Tests on electric cables under fire conditions
• UL 1581—Electrical wires, cables, and flexible cords testing procedures
• RoHS Directive 2011/65/EU—No halogen or lead content in insulation
• EN 50267—Halogen-free characteristics for data and power cables

Typical usage ratio

• EVA content: 35–60% of cable compound mass, blend proportion optimized for electrical, smoke, and mechanical performance
• Proportion adjusted based on flame retardant loading (ATH or MDH fillers)

Downstream process integration

• Dry blending with mineral fillers and flame retardants
• Melt compounding in co-rotating twin-screw extruders at controlled residence times
• Sheath extrusion onto copper/aluminum conductors at 140–180°C
• Post-extrusion in-line testing of tensile strength and elongation

Final product types

• Fire-resistant building wiring
• Low-smoke halogen-free data cables
• Automotive sensor harnessing
• Industrial control and instrumentation cables

4. Film and Sheet Production for Flexible Packaging

EVA is widely used as a key modifier in the coextrusion of flexible packaging films, imparting freeze resistance, tear strength, and transparency. E156W resin’s specific melt properties match blown film and cast film processes. Converted films deliver high clarity, puncture resistance, and thermal sealing performance required by frozen foods, medical packaging, and specialist industrial films.

Industry compliance standards

• EU Regulation (EU) No 10/2011—Plastic materials intended for food contact
• FDA 21 CFR 177.1350—Ethylene-vinyl acetate copolymers in food packaging
• ISO 15378—Primary packaging for pharmaceuticals
• GMP (Good Manufacturing Practice) for packaging films

Typical usage ratio

• EVA content: 10–30% in coextruded or monolayer film, increased for deep freeze and medical applications
• Blend ratios adjusted for optical and barrier performance

Downstream process integration

• Blended with LDPE or LLDPE in gravimetric feeders
• Extruded via blown film or cast film lines at 160–210°C
• Thickness, seal strength, and haze monitored in-line
• Final slitting, rewinding, and corona treatment as required

Final product types

• Frozen food packaging films
• Infusion bag and medical sachet films
• Lidding films for dairy and ready-meals
• Industrial shrink films and sleeves

5. Footwear Midsoles and Molded Components

E156W EVA contributes cushioning and resilience in molded foamed products for the footwear sector. The pelletized raw material is compounded with blowing agents and cross-linkers in high-shear mixers before injection or compression molding. The process yields midsoles, insole pads, and other components with lightweight structure and controlled rebound, meeting both comfort and durability requirements of branded footwear products.

Industry compliance standards

• EN ISO 20344:2021—Personal protective equipment test methods for footwear
• REACH Annex XVII—Substances restricted in footwear sold in Europe
• ISO 9001—Process quality in footwear component manufacturing
• China GB/T 15107—General technical requirements for sports shoes

Typical usage ratio

• EVA content: 65–85% of foam compound, blended with color masterbatch and blowing agents
• Formula modified for hardness (Shore A) and compression set performance

Downstream process integration

• Pellets premixed with cross-linking and foaming agents, then batch-fed to molders
• Injection or compression foam molding at 150–190°C
• Out-of-mold expansion and in-line trimming
• Post-curing or annealing as necessary for closed-cell structure

Final product types

• Sports shoe midsoles
• Anti-fatigue insoles
• Safety footwear inserts
• Sandals, slippers, and molded flip-flops

6. Masterbatch and Compound Production for Color and Additive Dispersion

E156W is selected as a carrier resin in color and additive masterbatch manufacturing, owing to its polarity and compatibility with diverse pigments and stabilizers. The material’s processability enhances dispersion of sensitive additives, especially when low melt temperatures are required to protect heat-sensitive components. The masterbatch granules serve downstream plastics compounding for various molded and extruded goods.

Industry compliance standards

• ISO 9001—Quality management for colorant producers
• EU Food Contact Framework Regulation (EC) No 1935/2004—If downstream contact required
• REACH registration for pigments and carriers
• Global Automotive Declarable Substance List (GADSL)—For automotive applications

Typical usage ratio

• EVA carrier: 20–50% of masterbatch composition; ratio tuned for loading level and pigment wetting
• Adjusted to satisfy thermal, color, and migration performance targets

Downstream process integration

• High-shear blending of EVA pellets and additives or pigments
• Extrusion compounding with melt filtration at 120–170°C
• Pelletized for simplified addition to injection, extrusion, or blow molding lines
• Masterbatch dry blended or side-fed into main polymer stream

Final product types

• Color masterbatch granules for film and sheet
• UV and antioxidant masterbatches
• Masterbatch for flame retardant or anti-static cable compounds
• Pre-dispersed additive pellets for technical polymer processing