Applications of Hanwha TotalEnergies E155L EVA in Industrial Manufacturing

Hanwha TotalEnergies E155L EVA is recognized for its outstanding flexibility, adhesion, and clarity, making it a preferred copolymer in highly demanding industrial sectors. Below are real-world downstream scenarios where E155L EVA is incorporated by manufacturers seeking reliable formulation and processing performance, regulatory conformity, and long-term end product durability.

1. Photovoltaic Encapsulation Films

Solar panel manufacturers utilize E155L EVA extensively in the encapsulation layer of photovoltaic modules, valuing its blend of transparency, UV resistance, and flexibility. This application requires strict material consistency and enduring adhesion to glass and solar cells. EVA enters the lamination step, forming a protective barrier that maintains long-term cell performance even in harsh outdoor conditions.

Industry compliance standards

• IEC 61215:2021 (Crystalline Silicon Terrestrial Photovoltaic Module Qualification)
• IEC 61730-1/-2:2023 (PV Module Safety Qualification)
• UL 1703 (Flat-Plate PV Modules and Panels)

Typical usage ratio

• Used as up to 70-90% of the encapsulant layer by weight; the ratio may be modified with crosslinkers and UV absorbers based on specific UV exposure requirements and mechanical performance targets.

Downstream process integration

• Direct extrusion into films, followed by calendaring; integrated during module lamination between glass and cell array before vacuum-fusion and crosslinking under controlled heat and pressure.

Final product types

• PVC-free PV encapsulant sheets
• Crystalline silicon solar panels
• BIPV (building-integrated photovoltaics)
• Flexible thin-film solar modules

2. Hot Melt Adhesives for Packaging

Producers of hot melt adhesives employ E155L EVA for its balance of tack, flexibility, and clarity, making it suitable for carton, case, and bookbinding adhesives. Its clean melting profile and low odor characteristics are key for automated packaging lines, where consistent flow and set times maintain high productivity. EVA is compounded during adhesive batch blending with waxes and tackifiers, setting the desired open time and adhesion to substrates like cardboard, coated paper, and plastics.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives for Food Packaging)
• REACH Regulation (EC) No 1907/2006
• EN 923:2015 (Adhesives - Terms and Definitions)

Typical usage ratio

• Forms 25-60% of the adhesive mass, tailored depending on desired bonding strength and flexibility; higher EVA levels for adjustable tack and low temperature flexibility, lower levels where stiffness is prioritized.

Downstream process integration

• Compounded with resins and waxes in high shear mixers; granules are melt-processed and pelletized prior to use in in-line hot melt adhesive applicators during packaging line assembly.

Final product types

• Case and carton sealing adhesives
• Bookbinding hot melts
• Labeling adhesive sticks
• Envelope sealing adhesives

3. Cable Sheathing and Insulation

Wire and cable manufacturers select E155L EVA for cable sheaths and insulation where flame retardancy, flexibility at low temperatures, and dielectric stability are priorities. The polymer’s compatibility with fillers and flame retardant masterbatches enables compliance with demanding flame/smoke standards. EVA integrates during the extrusion coating stage, encapsulating conductors and providing both mechanical protection and electrical insulation consistency across batch runs.

Industry compliance standards

• IEC 60502-1 (Power Cables with Extruded Insulation and Accessories)
• UL 1581 (Reference Standard for Electrical Wires, Cables, and Flexible Cords)
• RoHS Directive 2011/65/EU

Typical usage ratio

• Constitutes 40-75% of the sheathing compound depending on flexibility, thickness, and required flame retardant loading; proportions are optimized according to final cable classification.

Downstream process integration

• Blended with antimony trioxide, ATH, and processing aids; continuously extruded over wire cores under controlled die temperature; crosslinking post-treatment optional for XLPE-type insulation grades.

Final product types

• Flexible power cable jackets
• Control and instrumentation cable sheaths
• Low smoke zero halogen (LSZH) insulation compounds
• Household electrical wiring insulation

4. Footwear Foaming Compounds

Shoe sole manufacturers use E155L EVA as a key resin for lightweight, resilient foam materials in midsoles and outsoles. Its blend of shock absorption, processability, and color acceptability meets the high throughput and QC requirements of global footwear brands. EVA is charged into foam compounding blenders along with blowing agents, pigments, and processing oils, defining the foam cell character and mechanical rebound properties.

Industry compliance standards

• ISO 20871:2018 (Footwear - Outsoles - Test Methods for Abrasion Resistance)
• ISO/TR 20880:2007 (Footwear Sustainability Guidelines)
• REACH Annex XVII (Restrictions on Chemical Substances)

Typical usage ratio

• Represents 60-90% of the foamed compound; adjusted with PE, crosslinkers, and fillers for desired resilience and density, depending on target shoe model and intended market.

Downstream process integration

• Placed directly into bulk mixers, then injected or compression-molded in single or dual density processes; controlled steam expansion achieves cell structure and dimensional stability before final product assembly.

Final product types

• Athletic shoe midsoles
• Children’s EVA sandals
• Safety boot outsoles
• Casual shoe footbeds

5. Solar Backsheet Adhesives

Backsheet producers for solar modules depend on E155L EVA for solventless adhesive formulations that bond multilayer polymer films with high durability and low water permeability. This requires careful formulation to achieve peel strength and UV weatherability that withstand module aging protocols. EVA is compounded with primary resins and stabilizers, entering as a hot melt or coextrusion adhesive during web lamination of backsheet rolls.

Industry compliance standards

• IEC TS 62788-2-1 (Photovoltaic Backsheet Test Methods)
• UL 94 (Flammability of Plastic Materials)
• TUV Rheinland PV Quality Standard

Typical usage ratio

• Comprises 30-50% of the adhesive matrix; tailored according to substrate selection and required long-term bond retention after accelerated aging tests.

Downstream process integration

• Formulated with adhesion promoters and antioxidants; applied by in-line coextrusion or hot melt lamination during backsheet roll assembly prior to quality inspection and slitting for module production.

Final product types

• Composite PV backsheets
• Solar cell protective laminates
• Flexible back barrier films

6. Film Grade Compounds for Greenhouse and Agricultural Films

Agricultural film producers incorporate E155L EVA to manufacture greenhouse and crop cover films with improved light transmission, lower temperature flexibility, and resilience against field handling. The resin’s ability to modify film crystallinity and delta-t transparency addresses specific grower requirements for humidity and UV management. EVA pellets are dry blended with PE and UV stabilizers, extruded into mono- or multilayer films for seasonal or multi-season agricultural use.

Industry compliance standards

• EN 13206:2021 (Plastics - Agricultural Films for Use in Agriculture and Horticulture)
• ISO 18604 (Packaging and the Environment - Material Recycling)
• EU Regulation 2011/10/EU (Food Contact Plastics; when crops contact film directly)

Typical usage ratio

• 10-25% in PE film blends; level optimized to weather cycle length, light diffusion index, and required mechanical stretching performance.

Downstream process integration

• Introduced by gravimetric dosing into blown film extruders; layered as outer or mid-core within multi-layer constructions, with QA checks for haze, puncture resistance, and film thickness uniformity.

Final product types

• Greenhouse covering films
• Silage wrapping films
• Cultivation row covers
• Anti-drip agricultural films