Applications of Hanwha TotalEnergies 1159 EVA in Industrial Manufacturing

Hanwha TotalEnergies 1159 EVA serves global manufacturers in advanced compounding and high-value product conversion. By selecting this grade for process integration, downstream clients benefit from balanced vinyl acetate content and tightly controlled melt flow parameters. Our technical teams support strict quality regimes throughout each application.

1. Solar Photovoltaic Encapsulation

1159 EVA is widely utilized as the primary encapsulant resin in manufacturing photovoltaic modules. Producers leverage its controlled vinyl acetate content (approx. 18-19%) to ensure stable optical transmission and reliable crosslinking during lamination. In these panel lines, resin formulation directly impacts module durability and field performance. Close attention is paid to crosslink additive dosing, UV stability, and gel content to achieve service life guarantees exceeding 25 years.

Industry compliance standards

• IEC 61215: Crystalline silicon terrestrial PV modules – design qualification and type approval
• IEC 61730: PV module safety qualification
• TUV Rheinland 2 PfG 1169/10.07 for encapsulant safety and performance
• REACH Regulation (EC) No 1907/2006—SVHC content registration

Typical usage ratio

• Used as 30-40% by weight of the encapsulant film; final layer thickness is adjusted (typically 0.45–0.65mm) based on cell structure and manufacturer module design

Downstream process integration

• Resin is compounded with peroxide crosslinkers, UV stabilizers, and antioxidants, then extruded into sheets; final lamination occurs in vacuum with glass and cell stack-up, reaching full cure during hot pressing

Final product types

• Mono and polycrystalline solar photovoltaic modules
• Bifacial and half-cell PV panels
• Building-integrated PV glass laminates
• Flexible thin-film solar films

2. Hot Melt Adhesive Formulation

Manufacturers of hot melt adhesives select 1159 EVA for pressure-sensitive, packaging, woodworking, and hygiene applications. The resin’s controlled flow index supports robust wetting and consistent open time. Adjusting its blend with tackifiers and waxes tailors bond strength for automated OEM and converting lines. QC teams closely monitor VOC compliance for sensitive finished goods, especially in hygiene and food packaging sectors.

Industry compliance standards

• FDA 21 CFR 175.105 for adhesive components in indirect food contact
• EN 923: Adhesives—terms and definitions
• ISO 9001:2015 Quality Management System for adhesive production
• Restriction of Hazardous Substances Directive (RoHS) 2011/65/EU compliance for electronics adhesives

Typical usage ratio

• 10–50% of total hot melt adhesive formulation; adjusted according to required viscosity, peel strength, and application type

Downstream process integration

• Melt-blended in bulk mixers with hydrocarbon resins, plasticizers, waxes, and other modifiers; dispensed via slot die, spray, or bead application in high-speed manufacturing

Final product types

• Case and carton sealing adhesives
• Bookbinding glues
• Diaper and personal hygiene closure adhesives
• Pressure-sensitive tape backings

3. Wire and Cable Compounding

Electrical cable manufacturers rely on 1159 EVA for extrusion-grade jacketing and semi-conductive insulation. The resin’s mechanical flexibility, when combined with appropriate fillers and fire retardants, enables meeting stringent flame resistance and low smoke requirements for power, communication, and specialty cables. Each batch undergoes rigorous dielectric breakdown and elongation testing for grid reliability and installation safety.

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 2011/65/EU (hazardous substance limits)
• ISO 6722 for automotive cable insulation

Typical usage ratio

• 30–60 parts per hundred resin (phr) in compound, balanced with flame retardants (ATH, magnesium hydroxide), plasticizers, and antioxidants

Downstream process integration

• Premix with mineral fillers and stabilizers, followed by twin-screw extrusion; molten blend is directly extruded onto copper/aluminum conductors or over primary insulation layers, then cooled and surface-inspected

Final product types

• LV and MV power cables (up to 35 kV)
• Building and appliance wire jackets
• Fiber-optic buffer tubes
• Railway and shipboard flame-retardant cables

4. Footwear and EVA Foam Injection

The footwear sector adopts this grade as a polymer base for closed-cell foam midsoles and padding. Processors blend it with blowing agents and crosslinkers for lightweight, resilient soles. Strict control of melt properties during mixing prevents surface defects and enhances elasticity. Inspection criteria include resilience, rebound, density, and compliance for restricted substances in export markets.

Industry compliance standards

• EN ISO 20344: Personal protective equipment—test methods for footwear
• REACH Annex XVII (restricted substances in consumer products)
• GB/T 15107—Test methods for EVA foam performance (China)
• California Proposition 65 (for consumer chemical exposure)

Typical usage ratio

• 70–95% of total foam formulation by weight; ratio varies if blended with natural rubber, PE, or coloring agents for functional or aesthetic properties

Downstream process integration

• Resin mixed with azodicarbonamide or environmentally friendly blowing agents, organic peroxides, and pigments in Banbury mixers, followed by injection or compression foaming; final shapes cut and incorporated in assembly lines

Final product types

• Sport and running shoe midsoles
• Slippers and sandals
• Shock-absorbing insoles and orthotics
• Anti-fatigue industrial mats

5. Low-Temperature Flexible Packaging Films

Processors use this EVA grade in multilayer flexible films for frozen food, seafood, and medical device packaging. The resin’s clarity, puncture resistance, and low sealing temperature extend film integrity during rapid-fill and cold-chain logistics. Film lines closely monitor haze, seal strength, and migration levels to satisfy global food contact and medical packaging protocols.

Industry compliance standards

• FDA 21 CFR 177.1350—Ethylene-vinyl acetate copolymers for food packaging
• EU 10/2011 (plastics intended for contact with food)
• ISO 11607: Packaging for terminally sterilized medical devices
• Chinese GB 9685—Standards for food contact materials

Typical usage ratio

• 10–35% in core and sealant film layers, coextruded with PE or PA; level adjusted for oxygen and moisture barrier, shrink, and film gauge

Downstream process integration

• Integrated into coextrusion lamination lines; direct pellet-fed into single or multi-manifold dies; films slit, printed, and converted into pouches or medical overwraps with post-process sterilization

Final product types

• Frozen meat and seafood pouches
• Vacuum and MAP (modified atmosphere packaging) bags
• Cold-stretched shrink films
• Sterile surgical supply packs

6. Masterbatch and Specialty Additives Carrier Resin

Compounders select 1159 EVA as a dispersion medium for masterbatch colorants and functional additive concentrates. Its compatibility and flow allow high pigment loading while maintaining pellet integrity and dispersibility for thin-walled or high-performance articles. Producers perform systematic rheology and pigment migration audits to guarantee line-to-line quality repeatability for end-users.

Industry compliance standards

• ISO 9001:2015—Masterbatch manufacturing quality
• EN 71-3: Safety of toys (heavy metal migration in colored compounds)
• GMP (Good Manufacturing Practice) for food contact masterbatch (Regulation (EC) No 2023/2006)
• FDA 21 CFR 178.3297 (color additives in polymers)

Typical usage ratio

• 40–65% of carrier in color/filler masterbatch pellets, with 15–50% active pigment or additive loading depending on downstream resin compatibility and target application

Downstream process integration

• Blended in twin-screw extruders with pigment powders or functional agents; pellets cooled, cut, packed for downstream dilution into PE, EVA, or specialty resins during film, sheet, or injection molding operations

Final product types

• Color and anti-block masterbatches for films
• UV and anti-static additive concentrates
• Slip or antiblock masterbatches for lamination lines
• Food-grade colorants for flexible packaging