Applications of LyondellBasell Ultrathene UE672006 EVA in Industrial Manufacturing

LyondellBasell Ultrathene UE672006 EVA is a high-quality ethylene vinyl acetate copolymer used by manufacturers in diverse downstream sectors. This versatile raw material brings unique polymer characteristics tailored for demanding industrial applications. Below, we present in-depth scenarios of real industrial usage, each addressing specific compliance protocols, formulation ratios, process integration stages, and the actual categories of finished products in each sector.

1. Photovoltaic Encapsulant Sheets Manufacturing

Solar module manufacturers incorporate this EVA grade for its transparency, adhesion, and thermal stability, which are critical during the lamination process of photovoltaic modules. The copolymer’s chemical structure meets long-term performance requirements under harsh operational environments, ensuring minimal degradation over decades. The production setup calls for tight control of melt flow and crosslinking kinetics to deliver stable encapsulant interlayers without compromising module output or warranty terms.

Industry compliance standards

• UL 1703: Standard for Flat-Plate Photovoltaic Modules and Panels
• IEC 61215: Terrestrial Photovoltaic (PV) Modules – Design Qualification
• IEC 61730: Photovoltaic Module Safety Qualification
• RoHS 2011/65/EU: Restriction of Hazardous Substances Directive

Typical usage ratio

• Sheet formulation uses 80–95% EVA by weight, blended with 5–20% additives (crosslinking agents, UV absorbers, stabilizers) per encapsulant recipe. Final dosage depends on the required gel content and optical properties.

Downstream process integration

• Film extrusion followed by masterbatch addition, calendaring to required thickness (0.4–0.6 mm), lamination with glass layers, thermal crosslinking at 140–155°C in vacuum or autoclave.

Final product types

• PET/EVA or glass/EVA encapsulant sheets
• Monocrystalline, polycrystalline, or thin-film solar panels
• BIPV modules for architectural integration
• Flexible PV sheets for portable and off-grid applications

2. Hot Melt Adhesive Formulation for Packaging and Bookbinding

In hot melt adhesive sector, compounders rely on this EVA’s controlled melt index and flexural properties to balance tack, peel strength, and setting speed. The vinyl acetate comonomer content supports formulation flexibility for packaging lines and bookbinding operations, particularly in automated, high-throughput environments where consistent glue behavior is critical for machine uptime and product quality.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives for indirect food contact in packaging)
• ASTM D1876: Standard Test Method for Peel Resistance of Adhesives
• ISO 11357-1: Thermal Analysis for Polymers
• REACH (EC) No. 1907/2006 requirements

Typical usage ratio

• Adhesive formulations include 30–60% EVA copolymer, complemented by 10–30% tackifiers, 10–25% waxes, and specific stabilizers. The ratio is adjusted based on viscosity and open time required by packaging line speed or bookbinding method.

Downstream process integration

• Melt blending in reactors at 120–180°C, followed by inline filtration and pelletizing or block molding. Downstream, the adhesive is remelted in tank systems on packaging or binding machines before being applied to substrates.

Final product types

• Case and carton sealing adhesives for food, beverage, and electronics
• Spine and side adhesives for hardcover and paperback books
• Laminating glues for flexible packaging and labels
• Hot melt pressure-sensitive adhesives (HMPSA) for tapes and stickers

3. Wire and Cable Insulation and Jacketing

Wire and cable producers utilize this EVA formulation for insulation and primary jacketing due to its high dielectric strength, flame retardance, and low-temperature flexibility. Processing control is vital to achieve uniform extrusion and avoid voids or gel particles that compromise electrical reliability, especially for power and communication applications requiring certified performance in challenging environments.

Industry compliance standards

• UL 1581: Reference Standard for Electrical Wires, Cables, and Flexible Cords
• IEC 60332-1: Tests on Electric Cables Under Fire Conditions
• RoHS 2011/65/EU compliance for restricted substances
• ISO 6722: Road Vehicle Wire – Single Core ISO Metric

Typical usage ratio

• Compound formulations use 60–80% EVA as the primary polymer, with 15–35% flame retardants (ATH, magnesium hydroxide), and 1–5% process aids and color masterbatch based on final cable class requirements and UL fire ratings.

Downstream process integration

• Batch compounding in twin-screw extruders, followed by granulation and direct extrusion onto pre-tinned copper or aluminum conductors. Online inspection for surface quality and dimensional uniformity before spooling.

Final product types

• Low voltage electrical insulation for indoor wiring
• Automotive wire harnesses
• Data communication and broadband cables
• Flexible cordage and cable constructions for industrial equipment

4. Foam Injection for Footwear and Sporting Goods

The footwear and sports equipment industry processes this EVA copolymer for lightweight, shock-absorbing foam sheets and midsoles. The material supports precision expansion ratios and cell structure required for branded soles, pads, and cushioning. Additive selection and crosslinking parameters vary to meet mechanical durability and performance expectations in finished athletic products and consumer safety gear.

Industry compliance standards

• ISO 20344: Personal Protective Equipment – Footwear Testing Methods
• REACH Regulation (EC) No. 1907/2006 – restricted substances
• GB/T 15107: EVA Physical Properties Standards for Footwear
• CPSIA (Consumer Product Safety Improvement Act, USA) for children’s goods

Typical usage ratio

• Molded foam recipes contain 75–90% EVA, balanced with 5–20% blowing agents (azodicarbonamide, sodium bicarbonate), and 1–5% crosslinkers and pigments. Ratios shift based on target density, compression set, and color consistency.

Downstream process integration

• Compounding in internal mixers, extrusion and pelletizing, sheet molding or direct injection molding at 150–170°C. Post-molding crosslinking and hydrothermal expansion steps determine final shape and resilience.

Final product types

• Athletic shoe midsoles and outsoles
• Protective pads for sports apparel
• Yoga mats and interlocking floor tiles
• Children’s play equipment and wearable safety goods

5. Film and Sheet Co-extrusion for Food and Medical Packaging

Food and medical packaging factories select this EVA grade to engineer co-extruded and multilayer sealing films. Its low sealing temperature, puncture resistance, and compatibility with polyolefins make it ideal for extending package shelf life and maintaining product sterility. Production lines demand high pellet consistency and melt stability, as even minor polymer variation can disrupt high-speed form-fill-seal or vacuum packaging operations.

Industry compliance standards

• FDA 21 CFR 177.1350: EVA for food packaging applications
• EU No. 10/2011: Plastics Materials for Food Contact
• ISO 11607-1: Packaging for terminally sterilized medical devices
• GMP (Good Manufacturing Practice), 21 CFR Parts 210/211

Typical usage ratio

• Sealant layers consist of 60–95% EVA, depending on target film thickness and mechanical specifications. Remainder includes slip agents, antiblocks, and specific antimicrobial additives when necessary.

Downstream process integration

• Blending and pellet drying, followed by blown film or cast film co-extrusion. Integration with barrier layers (PA, PE, EVOH) and inline corona or plasma treatment for print adhesion before roll winding and die-cutting to format size.

Final product types

• Vacuum bags and retort pouches for processed foods
• Peelable films for ready-meal trays
• Medical device pouches and blister pack lidding
• Sterilizable packaging for pharmaceuticals and diagnostics