Applications of Celanese Ateva 1943 EVA in Industrial Manufacturing

Celanese Ateva 1943 EVA (ethylene vinyl acetate copolymer) delivers precise technical performance in well-established industrial sectors where quality, traceability, and process control matter. Our expertise in EVA resin manufacturing ensures formulation consistency—directly supporting manufacturers in key conversion processes for adhesives, films, footwear compounds, solar encapsulation, and wire and cable insulation. Below, we detail the main industrial applications with technical and compliance details relevant for procurement, process engineers, and new product developers.

1. Hot Melt Adhesives for Packaging and Bookbinding

Downstream adhesive formulators incorporate this grade when high flexibility, low odor, and fast set time are essential for carton closure, spine gluing, and laminating flexible substrates. Vinyl acetate content and melt flow index support machinery runnability, clean edge definition, and compatibility with a variety of waxes and resins. Formulators select specific usage ratios based on viscosity targets, substrate adhesion, and open/setting time profiles to match application equipment and paperboard or film types.

Industry compliance standards

• FDA 21 CFR 175.105 Adhesives (for indirect food contact)
• EN 923:2015 Adhesives - Terms and definitions
• REACH (EC) No 1907/2006
• GMP Regulation (EC) No 2023/2006, where required

Typical usage ratio

• 25%–45% by weight of adhesive total; level depends on tackifier, wax, and polymer compatibility required for application (higher EVA for increased flexibility and open time, lower when maximized bond strength is needed).

Downstream process integration

• Melt compounding with other polymers and tackifiers in jacketed mixers or extruders, granulating to pellets, then feeding to hot melt applicators for slot, wheel, or spray coating onto substrates.

Final product types

• Corrugated case and carton closing adhesives, perfect binding adhesives for books and magazines, lamination adhesives for flexible packaging films, and envelope sealing compounds.

2. Film Extrusion for Lamination and Flexible Packaging

Film extrusion converters rely on this EVA resin for its unique blend of melt strength, clarity, and elasticity in co-extruded films aimed at flexible laminates, surface protection, and cold-seal application substrates. It supports high-throughput blown or cast film extrusion, with vinyl acetate content balancing optical properties and low-temperature sealing behavior. The inclusion ratio varies based on end-use flexibility and sealing target specifications.

Industry compliance standards

• FDA 21 CFR 177.1350 Ethylene-vinyl acetate copolymers (for food contact film)
• EU Regulation (EU) No 10/2011 on plastic materials and articles (food packaging)
• ISO 527 Tensile testing of plastics
• EN 1186 Food contact migration testing

Typical usage ratio

• 15%–35% in mono- or multilayer films; levels adjusted for film thickness, tear resistance, cold seal response, and desired compatibility with LDPE or other resins in co-extrusion.

Downstream process integration

• Dry blending in gravimetric conveying systems, followed by direct dosing to single or multi-layer blown/cast film extruders, including in-line lamination to paper, foil, or PE/PP films depending on targeted application.

Final product types

• Cold-sealable food wraps, bakery and snack laminates, protective collation shrink films, flexible pouches, and hygiene film laminates (for medical drapes and wound dressings).

3. PV Encapsulant Sheet for Photovoltaic Modules

Photovoltaic component manufacturers utilize this copolymer for the production of encapsulant sheets, a critical layer in crystalline silicon solar panels. Its molecular structure enables tight dimensional tolerance, crosslinking ability, and optical clarity necessary to safeguard solar cells over 25+ year installations. Process engineers optimize the incorporation based on curing initiative, wetting characteristics, and panel lamination speed.

Industry compliance standards

• IEC 61215-2:2021 (PV Module testing)
• UL 1703 (Standard for flat-plate PV modules and panels)
• TÜV Rheinland 2 PfG 1169/10.2007
• RoHS Directive 2011/65/EU

Typical usage ratio

• 65%–90% of encapsulant sheet mass, adjusted based on blend modifiers and co-polymer additive selection for desired crosslinking, flow, and UV resistance.

Downstream process integration

• Direct feedstock for encapsulant sheet extrusion; crosslinking initiated by organic peroxide or silane in calender or lamination lines, followed by die-cutting to PV module cells and application in vacuum laminators in automated module assembly.

Final product types

• Solar module encapsulation films, backsheet crosslinkable EVA, advanced multi-layer encapsulants, and specialty films for bifacial PV panels.

4. Foamed Shoe Soles in Footwear Manufacturing

Brands and contract manufacturers in the footwear industry apply this resin to produce lightweight, impact-absorbing, flexible foam midsoles and outsoles for sneakers, sandals, and industrial footwear. Recognized for high energy return and formability, converters balance blend ratios for density, compression set, and resilience to meet both worker safety standards and athletic performance criteria.

Industry compliance standards

• ISO 20871:2018 (Occupational footwear - mechanical risks)
• REACH (EC) No 1907/2006 Annex XVII
• EN 20345:2022 (Safety footwear)
• Restricted Substance Lists (brand/company customer standards)

Typical usage ratio

• 40%–70% by weight of foam compound; percentage set based on foaming agent, fillers, and desired hardness or flexibility (sport shoes require higher EVA, safety shoes may substitute with higher crosslinked content).

Downstream process integration

• Dry compounding with additives, pigments, crosslinkers, and blowing agents, followed by injection or compression molding into sole shapes, then curing in mold at controlled temperature and pressure.

Final product types

• Athletic shoe midsoles and outsoles, orthopedic sandal soles, work and safety shoe underfoots, children’s shoes, and molded EVA slippers.

5. Wire and Cable Insulation Sheaths

Cable manufacturers use this grade in low voltage and specialty wire insulation sheathing, where dielectric strength, thermal stability, and physical flex characteristics are critical. Its compatibility with flame retardants, UV stabilizers, and crosslinking systems supports applications in building wiring, appliance cables, and automotive harnesses. Engineers specify formulations to match mechanical, electrical, and regulatory mandates.

Industry compliance standards

• UL 83 (Thermoplastic-insulated wires and cables)
• IEC 60502-1 (Power cables with extruded insulation and PVC sheath)
• RoHS Directive 2011/65/EU
• EN 50363-0 & EN 50395 (Insulating and sheathing materials for cables)

Typical usage ratio

• 30%–55% in cable sheathing compounds, variable with filler content, flame retardant load, and crosslink density; higher levels for enhanced flexibility, lower when targeting toughness and cost reduction through blending.

Downstream process integration

• Pre-compounding with stabilizers, FR additives, and pigment, pelletizing via twin-screw extrusion, followed by in-line extrusion coating and crosslinking (where required) during the wire jacketing process.

Final product types

• Low voltage building wires, appliance cords, automotive cables, electronic wiring, and weather-resistant power cables.