Applications of Levima FL00328 EVA in Industrial Manufacturing

Levima FL00328 Ethylene-Vinyl Acetate (EVA) copolymer serves as a critical functional resin in a range of industrial processing environments. Our formulation-grade EVA offers performance characteristics required for specific downstream manufacturing routes, supporting compliance with regional and global standards across established application domains. Explore below detailed application segments supported by our manufacturing site technical data and industry experience.

1. Photovoltaic Encapsulation Sheets

Levima FL00328 EVA is engineered for the encapsulation layer in photovoltaic (PV) modules, providing transparency, adhesion, and resistance to environmental degradation. Downstream PV sheet producers incorporate the resin to increase module longevity and electrical yield. The copolymer chemistry ensures consistent performance over module lifespans exceeding 25 years, maintaining dimensional stability under thermal cycling, humidity, and UV exposure in field installations.

Industry compliance standards

• IEC 61215: Terrestrial photovoltaic (PV) modules – Design qualification and type approval
• IEC 61730: Photovoltaic (PV) module safety qualification
• UL 1703: Standard for Safety for Flat-Plate Photovoltaic Modules and Panels
• RoHS Directive (EU) 2011/65/EU

Typical usage ratio

• Formulation loading: 67%–78% of total sheet mass, adjusted for required cross-linking density and film thickness (typically 0.45–0.55 mm for module encapsulation).

Downstream process integration

• EVA pellets undergo extrusion with cross-linking additives and UV stabilizers to form monolayer or coextruded films; these films are laminated onto PV cells during module assembly using vacuum lamination processes at 140°C–155°C.

Final product types

• Solar module encapsulation films
• Photovoltaic glass-backsheet modules
• Bifacial solar panels
• Flexible PV laminates

2. Hot Melt Adhesive Formulation

This grade of EVA supports adhesive compounders serving high-speed packaging, woodworking, textile lamination, and bookbinding. The resin provides a balance between viscosity, flexibility at low temperatures, and processability. As a primary base polymer, it delivers the tack and bonding strength necessary for continuous application lines and compatible with food contact requirements in select cases.

Industry compliance standards

• FDA 21 CFR 175.105: Adhesives for food packaging (for indirect food contact)
• EN 923: Adhesives – Terms and definitions
• ASTM D3236: Standard Test Method for Apparent Viscosity of Hot Melt Adhesives
• ISO 9001: Quality management systems for production control

Typical usage ratio

• 15–45% of adhesive blend by weight, based on final flexibility and open time; adjusted with waxes, tackifiers, and plasticizers for end-use requirements.

Downstream process integration

• Resin is fed into continuous mixer or hot-melt compounding extruder, blended with tackifiers and other modifiers; formulated hot melt is granulated, blocked, or pelletized for customer pack sizes.

Final product types

• Carton closing and case sealing adhesives
• Book spine adhesives
• Wood edge banding glues
• Nonwoven hygiene adhesives

3. Cable Insulation and Sheathing Materials

FL00328 is suited for compounding into low- and medium-voltage wire and cable insulation. Downstream processors prefer this EVA grade where improved flexibility, moisture resistance, and dielectric strength are required, such as in power distribution or automotive wiring. Formulations typically include flame retardants, plasticizers, and stabilizers to achieve industry-mandated electrical and fire safety performance.

Industry compliance standards

• IEC 60502-1: Power cables with extruded insulation and their accessories
• EN 50290-2-21: Common test methods for cables (physical and non-electrical tests)
• UL 1581: Reference Standard for Electrical Wires, Cables, and Flexible Cords
• REACH Regulation (EC) No 1907/2006

Typical usage ratio

• 20–65% of insulation or sheathing compound, adjusted for cable voltage rating and mechanical strength targets; higher EVA content increases flexibility and water blocking.

Downstream process integration

• EVA resin compounded with fillers and flame retardants on twin-screw extruders; melt material is subsequently extruded over copper or aluminum conductor, then cooled and cut into cable reels or lengths.

Final product types

• Building and construction wires (e.g., THHN, MC cables)
• Automotive and battery cables
• Medium- and low-voltage power cables
• Fiber optic cable jackets

4. Foamed Footwear Midsole Production

EVA copolymers represent the base for physical and chemical foaming in midsole and outsole manufacturing for sports, work, and leisure shoes. Levima FL00328 EVA offers process consistency for both injection and compression molding technologies, yielding lightweight soles with controlled rebound, cushioning, and abrasion resistance. Footwear producers tune compound morphology to balance comfort and dimensional stability across end-user profiles.

Industry compliance standards

• ISO 9001: Quality management in footwear manufacturing
• ASTM D3575: Standard Test Methods for Flexible Cellular Materials made-from EVA
• REACH Annex XVII Entry 23 (restrictions on phthalates)
• GB/T 15107: Chinese Standard for Sports Footwear

Typical usage ratio

• 45–75% base EVA resin content in compounded formulation, with blowing agent ratios, cross-linkers, and filling agents adjusted according to required expansion, hardness, and wear resistance.

Downstream process integration

• Resin is compounded with foaming agents and curing additives; batch is pre-mixed and fed into either an injection molding or compression mold press at 160–180°C for expansion and curing, followed by trimming and finishing.

Final product types

• Sports shoe midsoles
• Cushioned insoles for occupational footwear
• Flip-flop and sandal soles
• Children’s casual shoe outsoles

5. Film Production for Packaging Applications

Many extruded and co-extruded film applications in food, pharmaceutical, and industrial packaging utilize this EVA to impart sealability, low-temperature flexibility, and puncture resilience. The copolymer grade is favored for stretch films, shrink films, and barrier layers, especially when requiring direct contact and non-migration properties for sensitive applications.

Industry compliance standards

• FDA 21 CFR 177.1350: Ethylene-vinyl acetate copolymers for food contact
• EU Regulation No. 10/2011: Plastic materials for food contact
• ISO 22000: Food Safety Management Systems
• ASTM D882: Standard Test Method for Tensile Properties of Thin Plastic Sheeting

Typical usage ratio

• 3–18% EVA blend with PE or other base polymers, depending on film thickness, desired elasticity, and sealing requirements; higher concentration for cling film and high-impact layers, lower for coextruded laminates.

Downstream process integration

• Pellets are dry-blended and gravimetrically fed into blown-film or cast-film lines; extrusion settings and chill roll temperatures are tuned to deliver target film gauge and performance.

Final product types

• Food-grade stretch and cling films
• Pharmaceutical strip packaging films
• Vacuum bag and barrier films
• High-clarity lamination films

6. Thermoplastic Elastomer Compounds

Downstream TPE manufacturers employ FL00328 in custom elastomer blends for flexible hoses, gaskets, and automotive profiles. Its compatibility with polyolefins and other modifier resins supports compounders targeting products with precise hardness (Shore A), elongation, and compression set, meeting automotive and industrial assembly specifications.

Industry compliance standards

• DIN EN ISO 18064: Thermoplastic elastomers – Nomenclature and abbreviated terms
• SAE J200: Classification System for Rubber Materials
• ISO 9001: Quality management for automotive components
• REACH SVHC Screening and Registration

Typical usage ratio

• 30–65% by compound mass, depending on target mechanical elasticity, colorability, and chemical resistance—higher content for soft touch, lower for rigid profiles.

Downstream process integration

• Resin is melt-mixed with polyolefins, fillers, and stabilizers in continuous twin-screw extruders; pelletized compounds are later injection molded or profile extruded into finished parts with tightly controlled dimensional tolerances.

Final product types

• Automotive door weatherstrips
• Flexible industrial tubing
• Sealing gaskets and O-rings
• Hand tool grips