Applications of USI Corporation Evathene UE656 EVA in Industrial Manufacturing

As a leading manufacturer of EVA copolymers, we supply Evathene UE656 to global processors across diverse industries. This material’s specific balance of melt index and vinyl acetate content lends targeted functional improvements where clarity, flexibility, and low-temperature performance are essential to downstream conversion. Below, find detailed application scenarios in which our material demonstrates proven reliability in industrial-scale operations.

1. Wire & Cable Compound Manufacturing

Evathene UE656 integrates into primary insulation and sheathing compounds for low voltage and data cables, enhancing electrical properties, flex life, and extrusion performance. Consistent material flow and excellent compatibility with flame retardants and fillers support high-throughput cable production lines for either pelletized or direct extrusion systems.

Industry compliance standards

• IEC 60502-1 for low voltage cables
• UL 1581 for electrical wires
• RoHS Directive (EU) 2015/863 for restricted substances
• EN 50363-1 for insulation and sheath compounds

Typical usage ratio

• 20–40% by weight as the co-polymeric base in cable insulation or sheath matrix; varies by performance class, with adjustment for flame retardants or filler loading

Downstream process integration

• Directly dosed during high-shear melt compounding with antioxidants and flame retardants; then pelletized or fed to single/dual screw extruders for cable coating or jacketing

Final product types

• Power cables (300/500V class)
• LAN and telecommunication cables
• Coaxial and speaker wires
• Home appliance cords

2. Hot Melt Adhesives (HMA) Formulation

Manufacturers rely on Evathene UE656 as a key constituent in hot melt adhesive formulations, especially for packaging, bookbinding, and automotive interior lamination. The grade’s tailored melt viscosity and compatibility with tackifiers and waxes enable adhesives with balanced open time, tack, and long-term bond durability under variable service conditions.

Industry compliance standards

• FDA 21 CFR 175.105 (Indirect Food Additives: Adhesives)
• REACH Regulation (EC) No 1907/2006
• ASTM D5329 for hot-melt adhesive physical testing

Typical usage ratio

• 30–60% by total formulation weight; exact percentage depends on desired open time, adhesion requirements, and thermal resistance in final HMA system

Downstream process integration

• Added during HMA compounding in heated reactors; blends homogeneously with tackifying resins and plasticizers before granulation or drum-filling for shipment

Final product types

• Case and carton sealing adhesives
• Book spine glues
• Automotive headliner bonding films
• Laminating adhesives for flexible packaging

3. Flexible Film Extrusion for Packaging

Processors employ UE656 in blown and cast film lines to improve clarity, sealability, and mechanical strength in multi-layer packaging films. Its high vinyl acetate content reduces crystallinity, yielding films with soft touch, impact resistance, and reliable hot-tack properties for automated filling systems.

Industry compliance standards

• FDA 21 CFR 177.1350 (Ethylene-vinyl acetate copolymers in food contact films)
• EU Regulation 10/2011 for plastic food contact materials
• ISO 1872-1 for plastics specification

Typical usage ratio

• 5–20% as part of film structure; adjusted according to target seal performance, puncture resistance, and layer thickness in co-extruded films

Downstream process integration

• Metered into extruder hoppers with LDPE or LLDPE, processed through blown or cast film lines, then slit and wound as roll stock or converted by bag, pouch, and liner producers

Final product types

• Food packaging films (bags, pouches)
• Lidding films for trays
• Medical device overwraps
• Tubular sleeving and stretch hood

4. Solar Cell Encapsulation Sheets

Downstream photovoltaic module manufacturers select this grade for encapsulation film layers, where optical transmission, thermal stability, and secure lamination are vital. The material’s uniform composition ensures minimal gel content and low shrinkage for consistent module output in automated lamination lines.

Industry compliance standards

• IEC 61215 and IEC 61730 for photovoltaic module safety and performance
• UL 1703 for flat-plate PV modules
• TUV Rheinland PV Quality Mark

Typical usage ratio

• 50–100% of the encapsulant sheet, usually as the predominant or sole polymeric phase to maximize light transmission and moisture barrier

Downstream process integration

• Processed via film extrusion and calendaring into sheets; applied over interconnected PV cells before thermal lamination and vacuum encapsulation within module frames

Final product types

• Encapsulant sheets for crystalline silicon solar panels
• Thin-film photovoltaic module encapsulation
• BIPV (Building Integrated Photovoltaic) composite layers

5. Foaming Applications in Footwear Midsoles

Shoe component manufacturers adopt this copolymer in lightweight, resilient foam formulations for athletic and casual midsoles, leveraging its elastic recovery, uniform cell structure promotion, and odorless processing. Its low gel content ensures smooth foam surfaces post-molding.

Industry compliance standards

• ISO 20871:2018 for footwear materials—chemical safety
• GB/T 15107-2013 (China) for EVA molded soles
• REACH Annex XVII for restricted substances in footwear

Typical usage ratio

• 60–90% by weight in foam midsole blends, modulated with crosslinkers, blowing agents, and colorants to tune hardness and bulk density

Downstream process integration

• Compounded in internal mixers with AC and DCP for foaming/crosslinking, then compression, injection, or rotary molded into sheets or direct component forms

Final product types

• Running shoe midsoles
• Sandals and slippers
• Kids’ shoe cushioning layers
• Sports padding inserts

6. Masterbatch Carrier for Pigments and Additives

Evathene UE656 acts as an efficient carrier resin in masterbatch formulations designed for polyolefin coloring and functional additives. Its compatibility with a wide viscosity spectrum ensures uniform pigment encapsulation and easy let-down during processors’ extrusion or molding stages.

Industry compliance standards

• ISO 9001:2015 Quality Management for masterbatch producers
• EN 71-3 (toy safety, migration of certain elements) where applicable
• FDA 21 CFR 178.3297 for color additives in plastics

Typical usage ratio

• 35–60% as the polymer matrix within color, additive or functional masterbatches, level set according to let-down requirements and pigment loading

Downstream process integration

• Blended with pigments or additives in a twin-screw extruder; extrudate pelletized and supplied to converters as ready-to-use masterbatch for PP, PE film, or injection molding

Final product types

• Color and additive masterbatches
• Functional concentrates for anti-block, slip, and UV stabilization
• Special effect masterbatches (pearlescent, fluorescent)