Applications of Innospec Leuna FLEXAREN 09002 EVA in Industrial Manufacturing

Produced at our Leuna plant, FLEXAREN 09002 EVA (ethylene-vinyl acetate copolymer) supports performance and processing efficiency across multiple industrial sectors. Below we outline the major application segments in which our material plays a critical role, including practical information for technical and procurement teams.

1. Hot Melt Adhesives for Packaging and Bookbinding

Hot melt adhesive plants leverage FLEXAREN 09002 EVA for high-strength binding in packaging, paper converting, and book manufacturing. Its controlled melt behavior and cohesive strength offer consistent machinability and excellent adhesion to paper, cardboard, and selected plastics. The copolymer’s vinyl acetate content enables precise tack and flexibility adjustment for automated equipment, ensuring integrity under variable climate conditions and meeting regulatory requirements for contact with printed and packaged materials.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives for indirect food contact)
• REACH Regulation (EC) No. 1907/2006
• ISO 9001 Quality Management System
• ASTM D1876 (Peel Resistance of Adhesives)

Typical usage ratio

• 25–45% of adhesive formulation; varies based on vinyl acetate content and melt index needed for flow and bonding strength in hot melt applications.

Downstream process integration

• Used as primary polymer during compounding stage in extrusion or mixing units before pelletizing or direct feeding to hot melt coating lines.

Final product types

• Book spines and covers
• Carton and case sealing adhesives
• Paper laminate bonds
• Self-adhesive label stocks

2. Cable Compound Insulation and Sheathing

Wire and cable producers use FLEXAREN 09002 EVA as a polymer matrix in low voltage cable compounds, insulation layers, and sheathing. The material supports flexibility, flame resistance, and dielectric integrity. It allows high fill-load levels with mineral or flame retardant fillers, with maintained processability. Its physical properties withstand required bending radii and repeated flexing, meeting national and international cable safety standards.

Industry compliance standards

• IEC 60502-1 (Power cables with extruded insulation)
• UL 1581 (Electrical wires – reference standards)
• RoHS 2011/65/EU Directive
• RoHS 2015/863 (Phthalates restriction)

Typical usage ratio

• 15–30% in cable compound; adjusted for flame retardancy, mechanical properties, and compatibility with fillers or plasticizers.

Downstream process integration

• Incorporated during melt compounding with crosslinkers and flame retardants; processed via extrusion onto copper or aluminum conductors.

Final product types

• Low voltage power cables
• Signal cable insulation
• Flexible cord sheaths
• Communications wire jackets

3. Footwear Soles and Midsole Foams

Shoe manufacturers select FLEXAREN 09002 EVA as a base resin in direct injection, compression molding, or expanded foam applications for comfort and durability. It provides controlled cushioning and resilience, essential for sport and casual footwear. The copolymer’s process stability allows accurate cell structure in foaming, consistent midsole hardness, and easy color dispersion, meeting local and global footwear chemical safety requirements.

Industry compliance standards

• EN ISO 20345/20344 (Protective footwear requirements)
• REACH Annex XVII (Restricted substances)
• CA Prop 65 (Safe Drinking Water and Toxic Enforcement Act)
• ECO PASSPORT by OEKO-TEX® (Chemical safety for textiles)

Typical usage ratio

• 65–85% by compound mass; adjusted based on type of desired hardness and foaming agent requirements for closed/open cell structures.

Downstream process integration

• Mixed with crosslinking agents, blowing agents, pigments, and fillers; processed in injection molding, compression molding, or foam extrusion units.

Final product types

• Sport shoe midsoles
• Casual and beach sandal soles
• Work boot shock-absorbing insoles
• Protective toe cap sneakers

4. Solar Panel Encapsulant Sheets

Photovoltaic module manufacturers use this EVA as a crucial raw material for producing encapsulant films. These films offer low shrinkage, stable UV resistance, and high optical clarity, protecting solar cells and enhancing power module lifespan. The material demonstrates consistent lamination across glass–cell–backsheet assemblies, with reliable processing at standard module curing temperatures and maintenance of electrical insulation properties during field exposure.

Industry compliance standards

• IEC 61215 (PV Module performance)
• UL 1703 (Standard for safety of flat-plate PV modules)
• EN 50548 (PV connectors and safety)
• RoHS Directive (Lead-free and halogen-free compliance)

Typical usage ratio

• 98–100% of encapsulant composition (may include crosslinkers and UV stabilizers); adjusted based on film thickness and crosslinking density.

Downstream process integration

• Extruded to produce sheets, then laminated via hot vacuum presses onto silicon wafers between glass and backsheet during solar panel assembly.

Final product types

• Crystalline silicon solar module encapsulants
• Thin film PV cell protection layers
• Photovoltaic panel intermediate films
• Building-integrated PV sheet laminates

5. Polymer Modification for Bituminous Waterproofing Membranes

Bituminous membrane and asphalt shingle manufacturers incorporate this EVA to enhance elasticity, cold flexibility, and service life of waterproofing systems. The copolymer improves resistance to cracking and flow, particularly in high-temperature storage and installation climates, and supports compatibility with standard bitumen process equipment. It enables consistent dispersion when blended with oxidized or SBS-modified bitumen.

Industry compliance standards

• EN 13707 (Reinforced bituminous membranes)
• ASTM D6163 (SBS-Modified bituminous sheets)
• CE marking under Regulation (EU) No. 305/2011 (Construction Products Regulation)

Typical usage ratio

• 4–12% polymer loading in total bitumen mass; selected for balance between flexibility, adhesion, and cost structure for membranes.

Downstream process integration

• Melt blended with bitumen during continuous mixing before calendering or lamination onto reinforcement fabrics.

Final product types

• Heat-weldable roofing membranes
• Self-adhesive waterproofing sheets
• Underlayment and vapor barrier rolls
• Polymer-modified asphalt shingles

6. Injection Molding and Compounding for Toys and Consumer Goods

FLEXAREN 09002 EVA plays a key role in formulation of soft consumer product shells and toys. Its processing reliability results in precision molding and tactile, safe surfaces, while phthalate-free composition and controlled extractables meet expanding regulatory scrutiny for children’s exposure. Finished goods benefit from consistent resilience and colorability in batch sizes ranging from high-volume molded parts to specialized low-bloom toy products.

Industry compliance standards

• EN 71-3 (Migration of certain elements – toy safety)
• ASTM F963 (Toy safety standard)
• REACH Regulation (EC) No 1907/2006 Annex XVII (Phthalates in toys)
• CPSIA (Children’s Product Safety Improvement Act, USA)

Typical usage ratio

• 75–95% as main polymer matrix, with small additions of pigments, UV stabilizers, or fillers depending on required tactile or visual characteristics.

Downstream process integration

• Dispensed to injection or blow molding units during pellet feed phase; may be pre-compounded with color masterbatches and modifiers.

Final product types

• Soft-bodied dolls and figurines
• Puzzle mat pieces
• Playground foam shapes
• Protective padding for juvenile products