Applications of Celanese Ateva 1221 EVA in Industrial Manufacturing

Our high-performance Ateva 1221 EVA copolymer is widely adopted by downstream manufacturers in specialized sectors for its film-forming, flexibility, and adhesion properties. The following real-world industrial scenarios highlight how process engineers and quality teams incorporate this raw material to meet demanding application-specific requirements.

1. Photovoltaic Encapsulant Films for Solar Modules

Solar module producers choose this copolymer for encapsulation layers due to its stability under prolonged UV exposure and compatibility with lamination processes. Its role is critical in ensuring reliable protection of photovoltaic cells and minimizing delamination or yellowing over the product’s service life.

Industry compliance standards

• IEC 61215 (Crystalline silicon terrestrial PV modules – Design qualification and type approval)
• UL 1703 (Flat-Plate Photovoltaic Modules and Panels)
• RoHS Directive (2011/65/EU) for hazardous substances
• ISO 9001:2015 Quality Management Systems

Typical usage ratio

• Film formulations generally contain 95–98% EVA by weight, with variations for UV absorber and crosslinking agent inclusion. Quality control labs adjust dosage for lamination speed, transparency, and adhesion targets.

Downstream process integration

• Palletized resin enters twin-screw extrusion and blown film or cast film lines. Crosslinkers and stabilizers blend in the melt phase before film extrusion and in-line surface modification. Finished films are supplied in rolls for solar module lamination.

Final product types

• Encapsulant films for photovoltaic modules
• Backsheet adhesives for solar panels
• Junction box potting films
• Light conversion layers

2. Hot Melt Adhesives for Packaging Industry

Packaging adhesive manufacturers rely on this copolymer to formulate hot melt adhesives with a balance of adhesion strength, flexibility, and processing temperature. It enables high-speed, clean-running glue sticks and pellets used widely in automated carton sealing, label application, and multiwall bag assembly.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives for indirect food contact)
• EN 16785-1:2015 (Biobased content in adhesives, where required)
• GMP Regulation (EC) No 2023/2006 for food contact materials
• ISO 22000 (Food Safety Management where applicable)

Typical usage ratio

• Formulations contain 20–35% EVA by weight, with selection determined by substrate type, open time, and cohesion goals. Higher loading improves flexibility for cold storage packaging; lower ratios suit high-tack applications.

Downstream process integration

• Material blends with tackifier resins, waxes, and stabilizers in high-shear mixers. Compounded blends are pelletized or extruded into glue sticks, then packaged for industrial hot melt equipment.

Final product types

• Hot melt glue sticks and granules
• Case and carton sealing adhesives
• Low-temperature labeling adhesives
• Multiwall sack adhesives

3. Wire & Cable Insulation Compounds

Manufacturers of low-voltage and specialty cables incorporate this resin as a flexible insulation and jacketing compound, especially where flame retardance and heat resistance are specified. The material’s processability enables uniform extrusion over conductors for consistent thickness and electrical properties.

Industry compliance standards

• UL 62 (Flexible cords and cables)
• IEC 60227 (Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V)
• RoHS Directive (2011/65/EU) for restricted substances
• EN 50363 (Insulating and sheathing materials for cables)

Typical usage ratio

• Wire and cable compounds typically feature 60–85% EVA, varying with flame retardant, plasticizer, and filler content. Formulators balance flexibility and insulation resistance based on cable standard class.

Downstream process integration

• Material is dry-blended or melt-compounded with additives and pigments, then pelletized. Pellets feed single- or twin-screw extrusion lines which coat or jacket copper or aluminum wire cores.

Final product types

• Low-voltage power cable insulation
• Flexible appliance cord jackets
• Halogen-free cable sheathings
• Submersible pump cable insulation

4. Film Grade Flexible Packaging for Food

The flexible packaging sector uses this copolymer for multilayer films where high clarity, sealability, and low-odor are essential. It enables soft, puncture-resistant films and sealant layers tailored to processed food wraps, dairy pouches, and ready-meal trays.

Industry compliance standards

• FDA 21 CFR 177.1350 (Ethylene-vinyl acetate copolymers for food contact)
• EU No 10/2011 (Food contact plastics — migration limits)
• GB 9685-2016 (China National Food Safety Standard for additives)
• BRCGS Packaging Materials Global Standard

Typical usage ratio

• In co-extruded films, typical EVA layers constitute 10–25% of the total film structure by weight. Proportion varies with gauge, mechanical property targets, and sealing requirements.

Downstream process integration

• Material is dosed by gravimetric feeders into multi-layer blown or cast film extruders. It acts as a sealant core or inner layer, often extruded in-line with polyethylene or nylon barrier layers.

Final product types

• Vacuum pouch films
• Cheese and dairy flexible wraps
• Ready-meal lidding films
• Processed meat packaging bags

5. Footwear Injection Molding Foam Materials

Footwear manufacturers utilize this resin for direct injection molding and compression-molded foams, capitalizing on its elasticity and lightweight nature. The formulation ensures consistent cell structure and cushioning for insoles, midsoles, and sports shoe outsoles, with durability demanded by performance footwear brands.

Industry compliance standards

• GB/T 15107-2013 (China footwear industry quality standard)
• EN ISO 20344:2011 (Test methods for safety footwear)
• REACH SVHC compliance (Annex XVII restrictions)
• ISO 9001:2015 Quality Management Systems

Typical usage ratio

• EVA content in foamable compounds usually ranges 65–85% by weight; cellular agents, colorants, and processing aids make up the balance. Higher EVA levels yield softer, rebound-rich foams for premium sports shoes.

Downstream process integration

• Raw resin is granulated and blended with foaming agents in batch mixers. Injection or compression molding equipment then produces finished shapes, followed by trimming, surface finishing, and QC inspection.

Final product types

• Sports sandal soles
• Orthopedic shoe insoles
• Children's foam footwear
• Lightweight running shoe midsoles

6. Stretch and Cling Film for Pallet Wrapping

Logistics and warehouse film converters select this EVA copolymer to enable flexible, tacky, and tear-resistant stretch and cling films. Its properties help achieve strong load retention and film memory, which are essential for stabilizing palletized loads during transport and storage, especially under variable temperature conditions.

Industry compliance standards

• ASTM D4649 (Stretch film yield, force, and elongation)
• ISO 527 (Plastics tensile testing)
• REACH Annex XVII (Limitation of hazardous substances)
• ISO 14001 (Environmental Management, if relevant)

Typical usage ratio

• Stretch film recipes often contain 8–18% EVA copolymer blended with LDPE or LLDPE. The exact dosage is set by technical teams based on film tack, cling force, and recovery requirements.

Downstream process integration

• Raw material is gravimetrically fed into cast film extruders with PE. EVA alloyed blends are extruded and rapidly cooled before slitting and rewinding into finished film rolls.

Final product types

• Manual and machine stretch wrap films
• Pallet-cling films for coldchain logistics
• Agricultural silage wrap
• Bundling and overwrapping films