Applications of LyondellBasell Ultrathene UE637000 EVA in Industrial Manufacturing

As a manufacturer dedicated to industrial-grade ethylene-vinyl acetate copolymers, we support a wide range of production sectors with precise grades and technical support. Below, we detail the core application scenarios for Ultrathene UE637000 EVA, illustrating where it plays a critical role in value-chain integration, from formulation to final product realization.

1. Wire & Cable Insulation and Sheathing

Our EVA finds extensive adoption in low-voltage power and communication cable jacketing, offering flexibility, thermal stability, and reliable insulation retention. Producers incorporate it to meet rising demands for halogen-free flame-retardant cable compounds, where physical and heat-distortion properties govern both safety and durability in infrastructure and electronics wiring. Its performance enables compliance with rigorous testing, extrusion consistency, and compatibility with various flame retardant additive systems.

Industry compliance standards

• IEC 60502-1 / IEC 60332-1 (Flame retardant cables)
• UL 1581 (Electrical wires & cables test procedures)
• RoHS Directive (EU Restriction of Hazardous Substances)
• EN 50267-2-1 (Halogen-free compounds in cables)

Typical usage ratio

• Base polymer loading typically 25%–45% by weight in halogen-free compounds, adjusted based on flame retardant filler loading and required mechanical performance.

Downstream process integration

• Added during compounding on twin-screw extruders with ATH or other flame retardants
• Direct pellet feeding in cable extrusion for insulation and outer jacketing layers
• Blending and pre-mixing with UV or heat stabilizers depending on outdoor/indoor application

Final product types

• Low-voltage electrical cable insulation
• Communication wire jackets
• Halogen-free power cable outer sheaths
• Flexible cord sets for consumer electronics

2. Hot Melt Adhesive Formulation

This EVA serves as the primary base polymer in hot melt adhesive (HMA) formulations where precise control over tack, bonding, and open time is critical. Adhesive manufacturers utilize its resin compatibility and melt viscosity behavior to meet stringent packaging and lamination assembly benchmarks. Its particular balance of flexibility and cohesive strength drives production consistency in filter assembly, bookbinding, woodworking and nonwoven hygiene adhesives.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives for food packaging)
• ISO 9001:2015 (Adhesive manufacturing quality systems)
• GB/T 2793-2010 (Detection of shear strength in adhesives)
• REACH Annex XVII (Chemicals in adhesive products)

Typical usage ratio

• Polymer loading typically 20%–40% by weight in HMA, fine-tuned for bond strength, substrate wetting, and application viscosity; adjusted with waxes and tackifiers based on process speed and equipment type.

Downstream process integration

• Incorporated during high-shear blending in jacketed vessels or planetary mixers
• Homogenized with resins, wax, and stabilization additives before extrusion or block forming
• Filter and sieve pre-processing to meet particle size criteria for pneumatic application

Final product types

• Hot melt adhesives for paper and packaging assembly
• Book spine adhesives
• Hygiene product assembly adhesives (diapers, femcare)
• Case and carton closing HMAs

3. Solar PV Encapsulant Sheet Manufacturing

EVA features prominently in solar photovoltaic (PV) module manufacturing, where it forms encapsulant sheets by lamination to protect silicon cells against environmental exposure and mechanical fatigue. Manufacturers rely on its optical clarity, moisture barrier properties, and cross-linking activity, crucial for panel durability under thermal cycling and UV exposure in field conditions. The raw material’s lot consistency supports precision sheet extrusion and reliable lamination yield on high-throughput module lines.

Industry compliance standards

• IEC 61215 (Crystalline silicon terrestrial modules)
• UL 1703 (Standard for flat-plate PV modules)
• IEC 61730 (PV module safety qualification)
• TÜV Rheinland 2PfG 1169/08.2007 (EVA as PV encapsulant material)

Typical usage ratio

• Used as 100% of the encapsulant layer by weight, possibly blended with stabilizers and crosslinking agents at 0.3%–3%, depending on the UV resistance and curing requirements.

Downstream process integration

• Sheet extrusion from granules followed by thermal calendaring to set dimensional tolerances
• Placement as inner and outer encapsulant layers over cell arrays before lamination
• Crosslinking induced during panel lamination—controlled by oven dwell time and peroxide initiator content

Final product types

• PVC-free solar module encapsulant sheets
• Standard glass-laminated crystalline silicon PV panels
• Flexible photovoltaic sheets for BIPV applications
• Double-glass module encapsulation films

4. Foamed Shoe Sole and Sports Equipment

Leading footwear and sporting goods producers depend on controlled foaming of EVA for injection-molded midsoles, insoles, and protective paddings. Its chemical expansion profile, resilience, and shock absorption outperform alternatives for athletic and safety shoe components. Carefully tuned cell size and density allow brand OEMs to meet mechanical and comfort standards without sacrificing processability in large-scale molding lines.

Industry compliance standards

• EN ISO 20344 & 20345 (Safety footwear testing and requirements)
• GB/T 15107–2013 (General technical requirements of shoes)
• REACH Regulation (Chemicals in footwear, e.g., phthalates)
• CPSIA (Consumer Product Safety Improvement Act, US for children’s products)

Typical usage ratio

• Primary component at 55%–80% by weight in the foamed blend—varies by density, desired resilience, and type of co-blending (with fillers, cross-linkers, blowing agents, or colorants).

Downstream process integration

• Mixed with azodicarbonamide or other chemical blowing agents during compounding
• Granules fed to closed-cell foaming injection and compression molding machines
• Trimmed, skinned, or die-cut post-molding, followed by QC for compression set and rebound

Final product types

• Athletic shoe midsoles and insoles
• Protective padding for helmets and sports gear
• Safety shoe and sandal soles
• Orthopedic supportive foam inserts

5. Flexible Film and Sheet Extrusion for Packaging

Food and medical flexible packaging converters utilize EVA’s sealing, puncture resistance, and low-temperature performance for co-extruded multilayer films. This copolymer grades fits applications demanding FDA and EU food contact safety, clarity, and reliable seal integrity for vacuum pouches, IV bags, and flexible lids. Processors appreciate its compatibility with polyolefin lines, granting predictable extrusion rheology and bubble stability in both monolayer and multilayer cast systems.

Industry compliance standards

• FDA 21 CFR 177.1350 (Polymers for food contact films)
• EU Regulation (EU) No 10/2011 (Plastic materials & articles in contact with food)
• ISO 22000 (Food packaging material safety)
• USP <661> (Plastic packaging systems for pharmaceuticals)

Typical usage ratio

• Co-extruded as 10%–35% by total layer thickness, optimized for sealing properties and targeted mechanical behavior in laminates; single-layer extrusion at higher ratios for low-temperature sealing films.

Downstream process integration

• Pellets dosed in gravimetric blenders with LLDPE/LDPE and processed through blown or cast film extruders
• Layered with barrier polymers (e.g., EVOH, PA) using feedblock co-extrusion
• Chilled, slit, and wound under controlled humidity and temperature environments

Final product types

• Vacuum pouches and bags
• Flexible medical solution containers (IV bags)
• Flow wrap lidding films for ready-meals
• Peelable and high-clarity flexible packaging films

6. Masterbatch Carrier Resin for Additive Dispersion

Producers of color and additive masterbatches exploit this EVA as a high-dispersion carrier, especially for pigments, UV, and slip agents intended for polyolefin converting customers. Its melt compatibility enhances dispersibility for temperature-sensitive or migration-prone additives, supporting downstream film, foam, or extrusion coating lines. It enables pelletization of homogenous, low-dusting concentrates at high pigment loadings, reducing downstream feeding loss and ensuring end-use performance uniformity.

Industry compliance standards

• ISO 9001:2015 (Color masterbatch production)
• EN 71-3 (Migration of certain elements in toy masterbatches)
• REACH Annex XVII (Pigments and chemical restrictions)
• EU No 10/2011 (Food contact masterbatches, if required)

Typical usage ratio

• Carrier resin makes up 40%–65% of masterbatch by weight, varied based on pigment type, target let-down ratio, and downstream usage (film, moldings, fibers).

Downstream process integration

• Melt combined with pigment or additive packages in heated twin-screw extruders
• Cooled, pelletized, and screened before packaging
• Performance validated for dispersibility and migration to match end-application QC

Final product types

• Color masterbatch pellets
• UV-protective additive concentrates
• Slip and antiblock masterbatches for films and sheets
• Conductive additive concentrates for technical moldings