Applications of Innospec Leuna FLEXAREN 14001 EVA in Industrial Manufacturing

Innospec Leuna FLEXAREN 14001 EVA is a high-quality ethylene-vinyl acetate copolymer designed for advanced industrial use. As the original manufacturer, we supply this material to diverse sectors requiring reliable thermoplastic performance, specific melt characteristics, and compliance with rigorous quality standards. The following application cases reflect verified industrial downstream uses.

1. Hot Melt Adhesives for Packaging and Bookbinding

Packaging and bookbinding companies depend on FLEXAREN 14001 EVA for consistent hot melt adhesive formulations. It enters the compounding line to achieve balanced adhesion, flexibility, and fast set times, crucial for high-speed automated lines. Users select vinyl acetate (VA) content and melt index to match substrate compatibility and process temperatures. This ensures shrink-wrapped packages, carton seals, and book spines maintain integrity from production to end use. FLEXAREN 14001 EVA supports formulating adhesives that meet migration and safety standards for consumer packaging applications, addressing compliance, repeatability, and downstream process efficiency.

Industry compliance standards

• FDA 21 CFR 175.105 for indirect food contact adhesives
• REACH Regulation (EC) No 1907/2006 for substance registration
• EN 923:2005 for adhesives – terms and definitions
• ISO 9001 certified production site for quality management

Typical usage ratio

• 35–65 wt% EVA within hot melt adhesive base; ratio adjusted based on desired viscosity, open time, and substrate properties; compatible with tackifiers and plasticizers

Downstream process integration

• Added during adhesive compounding at heated extruder/blender stage prior to pelletizing or drum solidification; allows quick melt and homogeneous mixing with resin and additives

Final product types

• Case and carton sealing hot melts
• Spine and side adhesives for perfect binding
• Flexible packaging laminating adhesives
• Removable label adhesives

2. Film Manufacturing for Agricultural and Industrial Use

Film converters incorporate FLEXAREN 14001 EVA to modify transparency, flexibility, puncture resistance, and sealing properties in multilayer co-extruded films. This copolymer best suits greenhouse covers, silage wraps, stretch hoods, and various protective films where mechanical strength and weldability under heat sealing are crucial. Its granular form ensures even melt and stable output in blown and cast film extrusion. Users adopt this material to achieve the specific mechanical and optical balance needed for each application segment, while maintaining compliance with sector demands for purity, extractables, and migration testing.

Industry compliance standards

• EU Food Contact Regulation (EU) No 10/2011 for packaging films
• ISO 4592 for film and sheeting tensile strength
• ISO 16620-2:2019 for plastic content of bioplastics
• DIN EN 13655:2018 for agricultural plastic films

Typical usage ratio

• 5–20 wt% EVA as an inner or outer layer modifier in PE and multilayer films; modified based on desired shrink, seal, and mechanical properties

Downstream process integration

• Dosage via gravimetric feeders into extrusion hopper; melts and disperses into PE matrix during film blowing or casting, forming continuous EVA-rich layers or blends

Final product types

• Greenhouse films and solarization covers
• Silage and bale wrap stretch films
• Industrial shrink and stretch films
• Flexible consumer product overwraps

3. Wire and Cable Insulation & Sheathing

Wire and cable manufacturers use FLEXAREN 14001 EVA as a critical base polymer for crosslinked and non-crosslinked insulation and jacketing. This material supports compounding with flame retardants, antioxidants, and fillers. It ensures dielectric strength, low-temperature flexibility, and resistance to thermal aging. Processing parameters depend on line speed, gauge, and required cable certification for safety and building code compliance. The copolymer composition allows tailored softness and processing without compromising end product electrical or mechanical reliability.

Industry compliance standards

• UL 62/UL 758 for flexible cable insulation
• IEC 60502 for power cables
• RoHS Directive 2011/65/EU for hazardous substances
• CSA C22.2 standards for electrical wires

Typical usage ratio

• 30–65 wt% EVA in insulation sheath blending, adjusted for cable gauge, required flame resistance level, and processability; often combined with 20–40% flame retardant fillers

Downstream process integration

• Introduced at compounding stage via twin-screw extruder, melted with additive package, pelletized, and then applied as extruded layer onto wire cores in continuous cable production lines

Final product types

• Low-voltage power and control cables
• Flexible appliance wires
• Halogen-free flame-retardant (HFFR) cables
• Signal and communication cable sheathing

4. Foamed Shoe Soles and Footwear Components

Shoe manufacturers rely on FLEXAREN 14001 EVA to produce lightweight, resilient foamed midsoles and other footwear parts. This copolymer’s vinyl acetate level and melt index enable fine tuning of softness, closed-cell structure, and density, critical for shock absorption and durability. Compounders blend it with blowing agents, crosslinkers, colorants, and processing aids before injection or compression molding. Strict migration and physico-mechanical property controls ensure articles meet industry safety, comfort, and aesthetic expectations.

Industry compliance standards

• EN ISO 20345/20347 for safety footwear
• REACH Annex XVII for restricted substances in articles
• ISO 8191 for footwear sole physical properties
• GB/T 15107 for EVA shoe sole materials

Typical usage ratio

• 65–90 wt% EVA as foam base; ratio adjusted for target density, compression set, and application (midsole, outsole, slipper, sports shoe), with blowing agent added at 2–10% based on expansion level

Downstream process integration

• Premixed with additives and blowing agents, then granulated; introduced into mold via direct injection or compression foaming; crosslinking occurs if required for elasticity and shape retention

Final product types

• Sports shoe midsoles
• Leisure and children’s shoes
• Anti-static and safety footwear components
• Comfort foam slippers and sandals

5. Solar Module Encapsulant Sheets

Photovoltaic manufacturers use FLEXAREN 14001 EVA to produce encapsulant sheets, protecting solar cells against moisture ingress, electrical insulation, and UV exposure. Sheet producers blend this EVA with stabilizers and curing agents, extrude thin films, and crosslink in situ during lamination at module assembly plants. This process supports clear, even lamination over cell arrays, maintaining performance through accelerated testing and long-term outdoor use. Material selection aligns with industry protocols for weathering, transmission, and chemical resistance.

Industry compliance standards

• IEC 61215 for PV module design qualification
• TÜV Rheinland 2PfG 1169/08.2007 for encapsulant reliability
• UL 1703 for flat-plate photovoltaic modules
• ISO 4892 for artificial weathering

Typical usage ratio

• 100 wt% EVA in encapsulant; blend with 1–4 wt% crosslinker and 1–2 wt% UV/antioxidant stabilizers as required by module design

Downstream process integration

• Compounded and sheet-extruded, cut to size, then laminated and thermally crosslinked directly over solar cell strings under vacuum to ensure void-free encapsulation

Final product types

• Solar module encapsulant sheets
• Photovoltaic panel intermediate films
• Flexible thin-film solar sheets
• Double-glass solar panel structures

6. Masterbatch Carrier Resin for Color and Additive Concentrates

Masterbatch producers adopt FLEXAREN 14001 EVA as a matrix resin for dispersing high loads of pigments, UV stabilizers, or process modifiers in pellet form. Its compatibility with polyolefins ensures stable let-down in downstream plastics processing with minimal agglomeration or phase separation. Formulators select grade and proportion based on pigment type and target end plastic system. The material handles high-shear mixing well and supports rapid throughput in single- and twin-screw extruders, with attention to both regulatory requirements and pigment/additive migration limits in the final article.

Industry compliance standards

• FDA 21 CFR 178.3297 for colorant additives in polymers
• ISO 9001, 14001 quality and environmental management
• REACH SVHC monitoring and declaration for EU
• ASTM D1603 for carbon black content in masterbatch

Typical usage ratio

• 40–80 wt% EVA as carrier resin, with 20–60% pigment or additive depending on concentrate strength and required dispersion quality

Downstream process integration

• Fed into high-intensity mixer with pigments/additives, fused by melt compounding and pelletized; user doses masterbatch into final plastic resin melt at 2–8% depending on color or additive requirement

Final product types

• Color masterbatch for film, fiber, and injection molding
• UV stabilizer concentrates
• Anti-block, slip, or anti-static additive pellets
• Functional additive carriers for food/non-food contact plastics