Applications of Celanese Ateva 1850A EVA in Industrial Manufacturing

Celanese Ateva 1850A EVA is a high-performance ethylene-vinyl acetate copolymer with balanced melt flow and flexibility, supporting specialized manufacturing across demanding industrial segments. As a raw material producer, we supply Ateva 1850A to exacting quality and compliance requirements, enabling downstream clients to produce goods with consistent properties and long-term durability.

1. Solar Photovoltaic Encapsulant Sheet Production

Solar module manufacturers employ Ateva 1850A for EVA encapsulant sheets to provide electrical insulation and long-term UV resistance in photovoltaic panels. The resin is processed with precise cross-linking agents, antioxidants, and UV absorbers to maximize solar cell durability and module lifespan. Encapsulant films must achieve stringent optical clarity and controlled gel content per module power output requirements.

Industry compliance standards

• IEC 61215: Terrestrial Photovoltaic (PV) Module Design Qualification and Type Approval
• UL 1703: Standard for Flat-Plate Photovoltaic Modules and Panels
• RoHS (Restriction of Hazardous Substances Directive)
• ISO 9001-certified production quality system

Typical usage ratio

• Base resin forms 60-80% of total encapsulant formula; specific loading adjusted according to film thickness (0.45-0.55 mm) and targeted crosslink content (70-80%)

Downstream process integration

• Compounding with crosslinkers, UV stabilizers, and co-agents in twin-screw extruders
• Casting and lamination into sheets via hot-melt extrusion
• Crosslinking during photovoltaic module lamination under vacuum and heat

Final product types

• Photovoltaic encapsulant films
• Solar PV modules for residential, commercial, and utility-scale installations
• BIPV (Building-Integrated Photovoltaics) laminates

2. Footwear Sole Compound Manufacturing

Footwear compounders incorporate Ateva 1850A into injection or compression-molded midsole and outsole formulations to provide shock absorption, flexibility, and low-temperature toughness in sports and casual shoes. The EVA copolymer’s vinyl acetate content ensures resilience and comfort, and the formulation allows tuning of foam density, slip resistance, and abrasion properties.

Industry compliance standards

• REACH (EC) No.1907/2006 for chemical safety in materials
• EN ISO 20344: Personal Protective Equipment Test Methods (For safety footwear components)
• GB/T 15107-2013: EVA Material for Footwear Soles (China)
• Phthalate-free declaration as per footwear industry restricted substance lists

Typical usage ratio

• 50-90% of sole compound, with ratio adjusted for desired hardness (Shore A 35-60) and foam expansion rate. High content for sport cushioning; lower loading for dress shoes or blended with natural/synthetic rubber.

Downstream process integration

• Melt blending with cross-linking agents, color masterbatch, blowing agents, and process oils
• Foaming/extrusion followed by compression molding or injection molding into sole components
• Post-molding curing to achieve maximum cell structure uniformity

Final product types

• Sports footwear midsoles and outsoles
• Sandal and slipper soles
• Work and safety shoe components

3. Hot Melt Adhesives for Packaging and Bookbinding

Industrial adhesive manufacturers use Ateva 1850A as a base polymer in hot melt adhesive (HMA) formulations where flexibility, clarity, and bonding versatility are essential. The thermoplastic EVA is compounded with tackifiers, waxes, and antioxidants for optimal set time and adhesion to paper, cardboard, plastics, and some metals, enabling high-speed automated packaging and binding lines.

Industry compliance standards

• FDA 21 CFR 175.105: Adhesives for Indirect Food Contact (as applicable for packaging)
• EN 923: Adhesives - Terms and Definitions
• ISO 9001/14001 for manufacturing and environmental management
• ASTM D1876: Peel Resistance Test of Adhesives

Typical usage ratio

• 30-60% of total adhesive mass; adjusted for viscosity, open time, and tack. Higher EVA content yields more flexible adhesives, while lower is used for rigid fast-setting formulas.

Downstream process integration

• Compounding in heated mixer with tackifying resins, waxes, and stabilizers
• Extrusion or pelletization into HMA blocks or sticks for end users
• Application by slot, bead, or spray on automated packaging or binding lines at 150-180°C

Final product types

• Case/carton sealing adhesives
• Book spine adhesives for perfect binding
• Laminate and paperboard bonding adhesives

4. Wire and Cable Insulation Jacket Compounding

Cable manufacturers blend Ateva 1850A with flame retardants and plasticizers for low-voltage wire and cable insulation and jacketing. The copolymer delivers required flexibility, dielectric strength, and resistance to cold-impact cracking, supporting electrical safety in consumer and industrial wiring. EVA-based insulation supports both extrusion and co-extrusion processing for uniform wall thickness and performance.

Industry compliance standards

• UL 1581: Reference Standard for Electrical Wires, Cables, and Flexible Cords
• IEC 60228: Conductors of Insulated Cables
• RoHS compliance for restricted substances in electronic applications
• IEC 60332-1: Flame Retardant Tests for Wires and Cables

Typical usage ratio

• 30-70% of total compound; the base content adjusted relative to required flexibility, flame retardant loading, and final jacket thickness (usually 0.8–2.0 mm per application specification)

Downstream process integration

• Melt blending in Banbury or twin-screw mixers with flame retardant masterbatches and plasticizers
• Pelletization for storage and handling, followed by extrusion onto wire cores
• Inline or offline annealing to stabilize jacket properties before cable testing

Final product types

• Low-voltage power cable jackets
• Automotive wire insulation
• Control and instrumentation cable sheaths

5. Flexible Film & Sheet for Food Packaging

Flexible film suppliers utilize Ateva 1850A as a modifier or co-extrudant in multi-layer food packaging films, imparting improved clarity, seal strength, and puncture resistance. The copolymer’s food contact safety, as certified by regulatory authorities, supports its use in packaging fresh produce, dairy products, and processed food where taste, aroma, and shelf life are critical.

Industry compliance standards

• FDA 21 CFR 177.1350: Ethylene-Vinyl Acetate Copolymers for Food Contact
• EU Regulation No 10/2011: Materials and Articles Intended to Come Into Contact with Food
• China GB 9685: Standard for Additives in Food Contact Materials
• BRCGS Packaging Materials Global Standard

Typical usage ratio

• 10-40% as a blend layer in co-extruded films; higher ratios for peelable seals or high-clarity layers; adjusted for package strength and barrier needs

Downstream process integration

• Dry blending with LDPE, LLDPE, or barrier resins, followed by twin-screw extrusion
• Film blowing or casting to produce mono- or multi-layer rolls
• Slitting, printing, and thermal sealing as per end-use packaging line requirements

Final product types

• Vacuum pouch films for meat and cheese
• Fresh produce packaging bags
• Dairy and yogurt lid films

6. Automotive Interior Trim Foam Parts

Tier-1 suppliers apply Ateva 1850A in the production of lightweight foam components for vehicle interiors, such as dashboards, armrests, and vibration-damping pads. The copolymer supports dense, resilient foams that retain mechanical integrity across temperature cycles and provide tactile comfort. Automotive applications rely on REACH-compliant EVA with strict VOC and odor control to meet interior air quality and vehicle manufacturer specifications.

Industry compliance standards

• ISO/TS 16949: Quality Management Systems for Automotive Production
• REACH Annex XVII: Control of Hazardous Substances and VOCs
• OEM-specific interior emission requirements (e.g., VDA 278)
• GB/T 2828.1-2012: Sampling Procedures for Inspection by Attributes

Typical usage ratio

• 60-95% of foam formulation, with loading optimized for part density (0.10–0.25 g/cm³), based on impact absorption and finish criteria set by automotive OEMs

Downstream process integration

• Compounding with blowing agents, colorants, and physical modifiers
• Injection or compression molding into component molds
• Finishing with trimming and lamination as needed for surface properties

Final product types

• Instrumental panel foams
• Door and armrest padding
• Noise, vibration, and harshness (NVH) foam inserts