Applications of Celanese Ateva 1811 EVA in Industrial Manufacturing

Celanese Ateva 1811 EVA serves as a functional polymer bridging the gap between process performance and end product consistency across several established industrial sectors. As the direct manufacturer, we ensure a stable supply chain, tightly controlled material properties, and extensive technical support for specialized downstream applications. Below, we detail practical, compliant use cases from real client industries.

1. Photovoltaic Encapsulation Films for Solar Modules

Solar panel manufacturers rely on Ateva 1811 to formulate encapsulation films, ensuring stability and light transmission in module lamination lines. Our material delivers consistent melt flow and clarity, which is essential for long-term electrical insulation and mechanical strength in demanding outdoor environments. Adjustments in formulation accommodate cell types, module size, and regional certification demands, directly impacting efficiency and field reliability.

Industry compliance standards

• IEC 61215: Terrestrial photovoltaic (PV) modules – Design qualification and type approval
• UL 1703: Standard for Flat-Plate Photovoltaic Modules and Panels
• EN 12150-2: Safety glass requirements for building-integrated PV
• ISO 9001:2015 – Quality management systems for solar product manufacturing

Typical usage ratio

• Encapsulation film formulations typically utilize 70–85% EVA resin by weight, with the balance comprising curing agents, adhesion promoters, and UV absorbers. Film thickness and lamination speed determine specific dosage.

Downstream process integration

• EVA resin is melt-extruded to form rolls, which feed automated lamination lines. Thermal crosslinking occurs at 140–155°C during vacuum lamination, followed by precise cooling and slitting for module assembly.

Final product types

• Mono- and polycrystalline silicon PV modules
• Flexible thin-film solar panels
• Building-integrated photovoltaic glazing units
• Bifacial solar modules with transparent encapsulation

2. Hot Melt Adhesives in Hygiene Disposable Goods

Producers of hygiene disposables require stable tack and soft bonding for products such as baby diapers, adult incontinence briefs, and sanitary napkins. Here, 1811 EVA acts as a core polymer enhancing cohesive strength, adhesion to nonwovens, and elastic performance under repeated use. Varying regional safety and migration standards influence adhesive composition and line speeds.

Industry compliance standards

• FDA 21 CFR 175.105: Adhesives regulations for indirect food contact (for hygiene products)
• ISO 13485:2016 – Medical devices quality management for manufacturing
• EDANA/INDA guidelines for nonwoven hygiene disposable products
• REACH Annex XVII: Restrictions on hazardous substances in adhesive formulation

Typical usage ratio

• Formulations generally include 25–35% EVA by mass, alongside tackifiers and plasticizers. The precise ratio shifts slightly depending on targeted peel strength and open time.

Downstream process integration

• Adhesive granules are melt compounded in inline reactors or extruders, then applied via slot or spray nozzles onto disposable substrates at 140–170°C, integrating with high-speed converting machinery.

Final product types

• Disposable baby diapers and training pants
• Feminine sanitary pads and liners
• Adult incontinence pads
• Medical underpads and absorbent hygiene products

3. Wire and Cable Insulation Compounds

Wire and cable compounders select this grade of EVA for flexible, halogen-free insulation sheaths where electrical, flame retardancy, and mechanical resilience are mandatory. Material purity, consistent viscosity, and controlled vinyl acetate content play critical roles in ensuring that insulation withstands manufacturing extrusion environments and complies with stringent safety codes.

Industry compliance standards

• UL 62: Flexible Cords and Cables
• IEC 60502-1: Power cables with extruded insulation
• RoHS Directive (2011/65/EU): Restriction of hazardous substances
• EN 50363-1: General requirements for insulating compounds

Typical usage ratio

• Compounders generally incorporate 55–75% EVA resin by weight, with fire retardants and stabilizers making up the balance. Adjustments depend on crosslink density and target voltage classes.

Downstream process integration

• Dry-blending and melt-kneading in twin-screw compounding extruders, followed by pelletizing. Cables are then insulated via co-extrusion or monolayer jacketing on continuous extrusion lines at 180–220°C.

Final product types

• Flexible appliance cords
• Building wiring for indoor and outdoor installation
• Data and communication cables with low-smoke properties
• Automotive and industrial signal cables

4. Foam Injection Molding for Footwear Midsoles and Insoles

High-performance athletic and leisure footwear manufacturers rely on closed-cell foam made with Ateva 1811 for lightweight, shock-absorbing, and resilient midsoles and insoles. The resin’s consistency allows for accurate cell formation, springback, and sustainable production cycles, all while meeting elevated chemical safety and mechanical benchmarks.

Industry compliance standards

• ISO 20871: Footwear – Test methods for insoles and insocks
• GB 30585: Safety technical specifications for children's shoes (China)
• EN 20347: Personal protective equipment – Work footwear
• OEKO-TEX Standard 100: Substance safety in finished foams

Typical usage ratio

• Foam recipes use 60–90% EVA by weight, the high end for midsole applications and lower ratios when blended with natural rubber or other copolymers. Physical blowing agent loads are tuned to target specific density and rebound values.

Downstream process integration

• Material enters the compound mixer and is batch blended with foaming agents, pigments, or reinforcing fillers. Molded on compression or injection presses at 140–180°C with rapid demolding and trimming cycles.

Final product types

• Sport and running shoe midsoles
• Comfort insoles and orthopedic footbeds
• Children’s form-molded footwear
• Protective work boot linings

5. Packaging Films for Food and Pharmaceuticals

EVA copolymer films serve as essential functional layers in multilayer packaging for sensitive consumer products. This grade helps balance flexibility, seal integrity, and barrier properties, especially in modified atmosphere or vacuum packaging lines—critical for food shelf life and pharmaceutical dose protection. Regulatory specifications and migration limits govern every stage from compounding to film extrusion and finishing.

Industry compliance standards

• FDA 21 CFR 177.1350: Polymers for food contact film applications
• EU Commission Regulation (EU) No 10/2011: Plastic materials and articles intended for food contact
• ISO 15378: Primary packaging materials for medicinal products
• GMP EC 2023/2006: Good Manufacturing Practice for food packaging

Typical usage ratio

• Multilayer film structures typically contain 10–35% EVA by layer weight, varied to control seal initiation temperature, flexibility, and puncture resistance, based on pack geometry and product volatility.

Downstream process integration

• EVA resin is introduced during coextrusion or blown film processes, acting as a sealing or adhesive tie layer. Finished films undergo corona treatment, cutting, and roll slitting for converters.

Final product types

• Fresh food vacuum pouches and flow packs
• Pharmaceutical blister packaging
• Dairy and meat shrink wrap films
• Flexible lidding films and sachets for powders