Applications of Levima UL00328 EVA in Industrial Manufacturing

Levima UL00328 EVA is an ethylene-vinyl acetate copolymer recognized in the industrial sector for consistent performance in polymer modification, extrusion, compounding, and lamination applications. As a raw material directly produced by Levima, the following end-use scenarios reflect high-volume and high-value markets where this grade is widely adopted by manufacturers to meet specific processing and compliance demands.

1. Wire & Cable Compounds for Power and Communication

Wire and cable manufacturers integrate UL00328 EVA in low-voltage insulation and sheathing compounds due to its balance of process stability, flexibility, and electrical properties. It enters the compounding phase to adjust melt flow, flexibility, and flame retardancy parameters for cable insulation systems requiring strict consistency over long production cycles and broad temperature ranges, especially for power, telecommunication, and data cables.

Industry compliance standards

• IEC 60502 (Power cables with extruded insulation)
• UL 1581 (Reference Standard for Electrical Wires, Cables, and Flexible Cords)
• RoHS Directive 2011/65/EU (Restriction of Hazardous Substances)
• REACH Regulation (EC) No 1907/2006

Typical usage ratio

• 18–35% by weight in insulation/sheath compounds depending on flexibility and flame-retardancy targets, adjusted for polymer blend type and cable standard class

Downstream process integration

• Melt blending with base polyolefins and fire retardants using internal mixers, then extrusion onto conductor wires or as cable jackets

Final product types

• Low-voltage cable insulation
• Fiber optic cable jackets
• Data and LAN cable sheathing
• Flexible appliance cords

2. Hot Melt Adhesive Formulations for Packaging

Major hot melt adhesive manufacturers select UL00328 EVA for producing pressure-sensitive, case and carton closure adhesives in the packaging sector. Its low gel content and controlled vinyl acetate content support stable open time and adhesion balance for rapid production lines in food, beverage, and consumer goods packaging, meeting migration and safety requirements for indirect food contact.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives for indirect food contact)
• EU 10/2011 (Plastic materials for food contact)
• BfR Recommendation XXI (Germany: Food packaging adhesives)

Typical usage ratio

• 28–48% in hot melt formulations, ratio determined by tackifying resin compatibility and viscosity demands for high-speed applicators

Downstream process integration

• Melt compounding in reactors with tackifiers, waxes, and antioxidants, finished as pellets or blocks for commercial hot melt lines

Final product types

• Case and carton sealing adhesives
• Labeling adhesives
• Bookbinding hot melts
• Packaging tape and film adhesives

3. Solar Panel Encapsulation Sheets

Photovoltaic encapsulant producers use this EVA as a primary polymer matrix for manufacturing solar module encapsulation sheets, favoring its crosslinking potential, long-term transparency, and weathering resistance. The material's properties allow precise control of sheet performance during lamination, supporting efficiency retention and long-term reliability of PV modules under global outdoor test protocols.

Industry compliance standards

• IEC 61215 (Crystalline silicon terrestrial PV modules – Design qualification and type approval)
• UL 1703 (Standard for Flat-Plate Photovoltaic Modules and Panels)
• EN 50618 (Cables for photovoltaic systems)

Typical usage ratio

• 60–70% of sheet formulation, with other components as crosslinkers, UV stabilizers, and antioxidants according to module design

Downstream process integration

• Extrusion and calendaring into sheets, then lamination onto solar cells under vacuum-thermal cycles to achieve crosslinking and encapsulation

Final product types

• Photovoltaic encapsulation sheets
• Backsheet adhesives for solar modules

4. Film Casting for Flexible Packaging

Flexible packaging converters employ this EVA in multilayer film co-extrusion for food pouches, medical packaging, and personal care sachets, leveraging its sealing performance and puncture resistance. Its integration ensures film clarity and heat sealing integrity on high-throughput pouch and bag lines, while supporting migration compliance in regulated packaging environments.

Industry compliance standards

• FDA 21 CFR 177.1350 (Ethylene-vinyl acetate copolymers in food packaging)
• EU 10/2011 (Plastic materials and articles intended to come into contact with food)
• GMP Regulation (EC) 2023/2006 (Good Manufacturing Practice for materials intended for food contact)

Typical usage ratio

• 10–25% in sealant or core layers; the ratio adapts to film thickness, sealing initiation temperature, and customer line speed criteria

Downstream process integration

• Direct feed into blown film or cast film lines as sealant or tie layers in multilayer structures, followed by slitting, printing, and pouch conversion

Final product types

• Food pouch films
• Medical device overwrap films
• Personal care sachet laminates
• Flexible vacuum bag films

5. Shoe Sole Injection Molding Compounds

Footwear manufacturing plants rely on UL00328 EVA for injection-molded midsole and outsole foams, chosen for its compression set, resilience, and density control. The grade feeds directly into foam compounding as a core polymer, where fit, cushioning and cold-flex properties are tightly specified for safety, athletic, and leisure footwear meeting international standards for chemical safety and product durability.

Industry compliance standards

• ISO 20871:2018 (Footwear — Test methods for outsoles)
• REACH Annex XVII (Restrictions on certain hazardous substances in footwear)
• GB/T 15107-2013 (China shoe sole standards)

Typical usage ratio

• 65–85% in closed-cell foam formulations, the precise ratio determined by desired density, expansion, and rebound specification per finished shoe type

Downstream process integration

• Granule blending with blowing agents, colorants, and crosslinkers, followed by direct expansion via injection molding to form soles and midsoles

Final product types

• Lightweight athletic shoe midsoles
• Safety boot outsoles
• Slipper soles
• Children’s sandal bases