Applications of Braskem Evateno CN8092 EVA in Industrial Manufacturing

Braskem Evateno CN8092 EVA supports the performance and quality of numerous advanced manufacturing sectors. As direct producers, we collaborate with leading industry partners to address certified requirements and formulation challenges. Below we highlight the most established downstream scenarios where CN8092 is actively used, detailing the specific compliance criteria, formulation ranges, process integration points, and typical end-use products.

1. Photovoltaic Encapsulant Films

CN8092 EVA stands out in the solar value chain for its stable gel content, reliable crosslink density, and long-term UV resistance, making it a preferred resin for photovoltaic (PV) module encapsulation. EVA pellets are dry blended and then melt-extruded or calendared into encapsulant sheets, which are laminated around solar cells under controlled heat and vacuum, preventing cell degradation, moisture ingress, and delamination over the expected 25-year module lifespan. Its properties meet the precise demands of solar customers that require proven field ageing resistance.

Industry compliance standards

• IEC 61215 (Crystalline silicon PV module performance tests)
• IEC 61730 (PV module safety qualification)
• UL 1703 (Standard for Flat-Plate PV Modules and Panels)
• TÜV Rheinland certified specifications

Typical usage ratio

• 65–75% EVA by weight in the sheet formulation; the remaining typically comprises crosslinking agents and UV absorbers, adjusted according to lamination line parameters and expected field performance.

Downstream process integration

• Enters the production line as pelletized resin in a twin-screw extruder or calendar, forming rolls of encapsulant film. Sheets are stacked above and below solar cells during module layup, then crosslinked under vacuum lamination.

Final product types

• Solar panel encapsulant sheets
• Monocrystalline and polycrystalline PV modules
• Bifacial solar modules

2. Hot Melt Adhesives for Packaging

The CN8092 grade meets high-melt strength and low-temperature flexibility requirements for modern hot melt adhesive formulations, including case and carton sealing in the food and beverage industry. The resin is compounded with tackifiers and waxes in precise ratios, producing adhesives that provide clean running on fast automatic applicators, secure bonding even on coated substrates, and minimal stringing or charring during pot life. These physical properties enable high-output packaging plants to self-certify packaging safety and maintain bond integrity throughout storage and transit.

Industry compliance standards

• 21 CFR 175.105 (FDA requirements for adhesives in indirect food contact)
• EU Regulation No 10/2011 (Plastic materials in food contact, for adhesives)
• GMP Regulation (EC) No 2023/2006 (Good Manufacturing Practice for food packaging)

Typical usage ratio

• 27–40% EVA by total formulation weight in hot melt recipes, varying with target open time, viscosity, and peel strength for different paperboard grammages and coating levels. Ratio adjusted together with wax and tackifier balance.

Downstream process integration

• EVA pellets introduced into a hot melt mixer, melted under 140–170°C, compounded with tackifiers and waxes. The final blend is extruded into pillows or slugs, then loaded into automated packaging line adhesive applicators for direct use.

Final product types

• Hot melt adhesives (HMA) for case and carton sealing
• Adhesive sticks for industrial packaging lines
• Specialty food-grade adhesive blocks

3. Cable Sheathing and Wire Compounds

In wire and cable manufacturing, CN8092 functions as a key polymer for low-voltage sheath formulations and insulation layers. Its high flexibility, impact modification, and fire retardancy compatibility support cable standards for safety and dielectric strength, especially in automotive, building, and appliance wiring. The material is blended on high-shear compounding lines, ensuring good dispersion of flame retardants and colorants, and then extruded onto copper or aluminum wire for insulation or jacketing operations.

Industry compliance standards

• UL 1581 (Reference Standard for Electrical Wires, Cables, and Flexible Cords)
• IEC 60228 (Conductors of insulated cables)
• RoHS Directive 2011/65/EU (Restriction of Hazardous Substances)
• GB/T 2951 (Chinese cable mechanical and insulation testing)

Typical usage ratio

• 18–32% EVA content in the polymer blend, with the range set by cable flexibility requirements, flame-retardant loading, and desired dielectric properties. Ratio adjusted when co-formulated with LDPE or LLDPE for specific cable types.

Downstream process integration

• Combined via melt compounding with stabilizers and flame retardants, then directly fed into single- or double-screw extruders. The molten mixture coats or jackets continuous wire runs, followed by rapid quench cooling and online quality checks.

Final product types

• Low-voltage building wire jacketing
• Automotive primary cable insulation
• Flexible appliance cord sheathing

4. Shrink and Stretch Film Production

Converters in the film sector leverage CN8092’s high clarity, toughness, and puncture resistance to fabricate shrink and stretch films widely used in logistics and industrial pallet wrapping. EVA’s compatibility with common co-extrusion equipment allows for precise blending with LDPE and LLDPE resins, imparting both flexibility and strong cling properties required by automated wrapping lines. Targeted usage ensures compliance with film migration and mechanical performance standards for direct and indirect contact with transported goods.

Industry compliance standards

• EN 13634 (European standard for stretch films)
• FDA 21 CFR 177.1350 (Ethylene-vinyl acetate copolymers, food packaging use)
• REACH Regulation (EU) 1907/2006 (Chemical safety in film manufacture)

Typical usage ratio

• 5–10% EVA in multi-layer film formulations, typically in the cling or sealing layer. Modified upward for films requiring increased puncture resistance or stronger cold-temperature performance.

Downstream process integration

• Introduced into blown or cast film extrusion lines; co-extruded with other polyolefins into three- or five-layer films. Line operators set zone temperatures and chill rolls to optimize film gauge and mechanical uniformity.

Final product types

• Pallet wrap stretch films
• Shrink hooding films for export packaging
• Food and bottle multipack shrink films

5. Footwear and Sports Sole Molding

Footwear compounders select CN8092 to impart adaptive cushion and resilience in midsoles, outsoles, and sports cushioning components. The resin blends efficiently with crosslinking agents and color masterbatches in large-scale kneaders or banburies before foaming, yielding consistent cell structure and rebound performance. Formulators fine-tune the dosage in line with the density, hardness, and flexural recovery specifications set by athletic brands and safety footwear producers, with downstream testing for slip resistance and compression set.

Industry compliance standards

• ISO 20344 (Footwear testing methods and requirements)
• EN ISO 20347 (Occupational footwear safety)
• GB/T 3903.1 (Chinese standards for sports shoe soles)

Typical usage ratio

• 40–55% EVA content relative to compound weight. Range optimized based on target hardness, foam expansion ratio (typically 2–3x), and mechanical shock absorption as specified by shoe model and mold design.

Downstream process integration

• Blended with crosslinkers and blowing agents, then injection or compression molded under controlled heat and pressure. Molded foam slabs undergo post-curing and are cut or die-trimmed into soles and internal cushions.

Final product types

• Sports shoe midsoles (running, basketball, tennis)
• Occupational shoe and boot soles
• Custom-molded orthotic inserts

6. Flexible Sealants and Caulks

Chemical plants use CN8092 as a soft phase in the formulation of flexible construction sealants and caulking compounds, especially for gap-filling applications exposed to movement or temperature cycling. Combined with plasticizers, fillers, and adhesion promoters, the material enters planetary mixers and high-shear blenders for compound homogenization. By calibrating the EVA content, producers control slump, setting time, and adhesion to substrate materials such as aluminum, PVC, and masonry—directly supporting compliance with global building and construction material standards.

Industry compliance standards

• EN 15651 (Sealants for non-structural joints in buildings and pedestrian walkways)
• ASTM C920 (Standard Specification for Elastomeric Joint Sealants)

Typical usage ratio

• 12–22% EVA by weight, adjusted for desired modulus and fatigue life based on joint width and substrate type. Higher ratios favored for superior cold flexibility and elongation.

Downstream process integration

• Added to mixers before bulk-filling into sausage, cartridge, or pail packaging. Sealants prepared with continuous quality monitoring for viscosity, sag resistance, and shear strength before shipping to construction sites or OEM contractors.

Final product types

• Building joint sealants for window and door installation
• Interior and exterior caulking compounds
• Pre-packed construction adhesives