Applications of Celanese Ateva 1807A EVA in Industrial Manufacturing

Celanese Ateva 1807A EVA, an ethylene-vinyl acetate copolymer, supports multiple downstream industrial sectors requiring advanced polymer performance, stability, and compliance. As the direct manufacturer, we supply this grade for use in applications where consistent melt behavior, clarity, and mechanical flexibility are essential to product quality and process efficiency.

1. Solar Photovoltaic Encapsulant Film Production

Ateva 1807A forms the core base for encapsulant films used in crystalline silicon PV modules, delivering controlled melt strength and crosslinking response required for automated film lamination processes. The low gel content ensures superior optical transmission and weathering resistance in long-life solar installations. Module manufacturers rely on this material during co-extrusion with performance additives to achieve production yields that meet demanding global solar reliability programs.

Industry compliance standards

• IEC 61215 / IEC 61730 (PV module safety and performance)
• UL 1703 / UL 61730 (US solar safety)
• TÜV Rheinland PV Quality Mark
• RoHS 2011/65/EU, REACH SVHC conformity

Typical usage ratio

• Base resin accounts for 60–80% of the encapsulant film layer; formulation varies with additive loadings (crosslinkers, UV stabilizers, adhesion promoters)

Downstream process integration

• Feeding directly into twin-screw extrusion lines for sheet casting; film calenders operate at 500–550°C followed by in-line crosslinking during module lamination at 145–155°C for 15–20 minutes

Final product types

• PVC-free solar encapsulant sheets
• Crystalline silicon and thin film PV modules
• Bifacial and transparent backsheet modules
• Photovoltaic architectural glass panels

2. Hot Melt Adhesive Formulation for Packaging and Bookbinding

Adhesive compounders incorporate Ateva 1807A for its balance of flexibility, tack retention, and heat stability in hot melt systems. This grade allows consistent batch-to-batch viscosity and performance in high-speed packaging equipment, and prevents adhesive crystallization and cold brittleness in book spine glues exposed to fluctuating shipping temperatures.

Industry compliance standards

• FDA 21 CFR 175.105 (adhesives for food packaging)
• ISO 9001:2015 certified QC in adhesive manufacture
• REACH Regulation (EC) No 1907/2006
• EN 923 (Hot Melt Adhesives: Terminology and properties)

Typical usage ratio

• Forms 28–45% of hot melt adhesive mass, adjusted according to specific melt flow and open time targets; higher EVA ratios yield increased flexibility and lower setting points

Downstream process integration

• Pellet or granular feed into ribbon blenders or internal batch mixers with tackifiers, waxes, and antioxidants, followed by direct extrusion or block casting

Final product types

• Case and carton sealing adhesives for food, beverage, and consumer goods
• Perfect binding spine glues in hardcover and softcover books
• Envelope, bag, and label adhesives for mailroom and retail packaging
• Laminating adhesives for flexible packaging film

3. Footwear Foam Injection and Molded Components

In footwear manufacturing, Ateva 1807A is used in EVA foam formulations to achieve the required "rebound" and dimensional recovery in midsoles and insoles. Its precise vinyl acetate content enhances both elastic cushion and flexibility, supporting comfort and performance in athletic, safety, and casual shoes. Producers favor this grade in injection molding and compression processes where low-shrink expansion and consistent density are critical metrics.

Industry compliance standards

• ISO 20871:2018 (Footwear – Test methods for outsoles)
• CPSIA & Prop 65 Compliance (US consumer safety)
• EN ISO 20344/20347 (Occupational footwear performance)
• REACH compliant supply chain

Typical usage ratio

• 40–85% of foam compound by total mass; ratio tailored according to finished foam hardness (Shore A), with remainder comprising blowing agents, colorants, and process aids

Downstream process integration

• Weighing and premixing with foaming agents and crosslinkers, followed by introduction into continuous or batch injection molding lines; molders operate at 120–145°C with pressure/steam cycles for defined expansion

Final product types

• Sport and running shoe midsoles
• Compression-molded insoles
• Anti-fatigue mats and cushioning pads
• Industrial safety shoe components

4. Wire & Cable Insulation and Sheathing Compounds

Electrical cable producers depend on Ateva 1807A in premium insulation and sheathing formulas, particularly for low-voltage applications and flexible cords. Its melt stability allows continuous high throughput in wire coating extruders, while the controlled vinyl acetate content optimizes resistivity and mechanical aging for cable jackets exposed to dynamic bending and repeated flex cycles.

Industry compliance standards

• UL 62, UL 758 (Flexible cord insulation)
• IEC 60227, IEC 60332 (PVC-insulated electric wires and test for flame propagation)
• RoHS (2011/65/EU, lead-free directive)
• VDE 0482 (German insulation compounding)

Typical usage ratio

• Compounds contain 45–75% base EVA resin, with fillers and stabilizers adjusted to meet flame retardance, tensile strength, and elongation at break criteria

Downstream process integration

• Feeds into twin-screw or Banbury mixers with flame retardants (ATH or Mg(OH)₂), pigment systems, and processing oils; downstream crosshead extrusion or jacketing directly on to pre-heated copper/core conductors

Final product types

• Flexible power cords and appliance wiring
• Low-voltage cable insulation and sheathing
• Halogen-free cable jackets for consumer electronics
• Signal and audio cable insulation