Applications of LG Chem SEETEC EA28150 EVA in Industrial Manufacturing

SEETEC EA28150 EVA, produced by LG Chem, is a high-quality ethylene-vinyl acetate copolymer widely recognized for its efficiency in target industries demanding controlled flexibility, resilience, and consistency. Below, we provide a comprehensive review of industrially relevant applications, specifying requirements and value delivered to downstream operations where this grade is currently employed in regular production.

1. Solar Photovoltaic Encapsulant Sheets

Photovoltaic encapsulant sheet manufacturers select this EVA grade for its balance of processability and crosslinking characteristics, enabling reliable protection and adhesion between solar cells, glass, and backsheet. Key performance includes excellent light transmission and minimal shrinkage during lamination, directly contributing to long-lived solar panels. Producers manage anti-aging properties and gel content through precise formulation strategies tailored to end-market certification demands.

Industry compliance standards

• IEC 61215 Photovoltaic Module Qualification
• UL 1703 Safety Standard for Flat-Plate Photovoltaics
• REACH Regulation (EC 1907/2006) for chemical safety
• RoHS Directive 2011/65/EU for restricted substances

Typical usage ratio

• Core EVA resin: 65%–80% in encapsulant layer; residual weight comprises additive masterbatches (crosslinkers, UV stabilizers, adhesion promoters). Adjustment depends on cell type and target gel content (typically 75–85%).

Downstream process integration

• Compounding in twin-screw extruder with additives, sheet calendering or extrusion, thermal lamination under vacuum (140–155°C, 15–25 min), followed by crosslinking and cutting to finished sheet size.

Final product types

• Solar module encapsulation films
• Photovoltaic interlayer sheets
• Backsheet adhesion layers for rigid and flexible PV panels

2. Hot Melt Adhesives for Packaging and Bookbinding

Commercial hot melt adhesive formulators utilize this EVA to achieve rapid melt flow, strong initial tack, and efficient setting in high-speed packaging and bookbinding systems. Melt process consistency and compatibility with resins and waxes support glue stick and pellet products for automatic dispensing units. Strength and aging resistance enable bound materials to maintain integrity throughout logistical handling and shelf life.

Industry compliance standards

• FDA 21 CFR 175.105 for indirect food contact (adhesives)
• EN 923:2005 European terms and definitions for adhesives
• ISO 9001:2015 Quality Management (adhesive production)
• Commonly meets local packaging safety accreditations (as specified by film and board clients)

Typical usage ratio

• 30%–45% of total adhesive formulation; remainder includes tackifiers, plasticizers, waxes, and stabilizers. Ratio shifts depending on viscosity target and substrate wet-out requirements.

Downstream process integration

• Melt blending in jacketed mixers (130–180°C) with sequential addition of tackifiers and waxes, followed by refining, pelletizing, and packaging. End users apply in heated glue tanks or with extrusion heads for rapid assembly lines.

Final product types

• Hot melt glue sticks
• Packaging carton adhesives (case and carton sealing)
• Book spine adhesives for hardcover and softcover
• Label stock and self-adhesive tapes

3. Injection Molded Foam for Sports and Footwear

Footwear and sporting goods molders blend this EVA to obtain consistent cell structure and uniform resilience in midsoles, insoles, and protective paddings. This grade’s melt index and vinyl acetate content facilitate controlled foaming, durability, and comfort, even in energy-return or lightweight models. Formulators manage density and rebound properties by optimizing foaming agents relative to regulatory and laboratory test benchmarks on shock absorption.

Industry compliance standards

• ISO 20344/20345 for protective footwear testing
• OEKO-TEX® Standard 100 textile safety for skin contact
• GB/T 15107-2013 Chinese standard for sports sole materials
• PAS 2050/ISO 14067 for carbon footprint when required by brands

Typical usage ratio

• 45%–70% EVA by total compound mass, depending on firmness/softness target. Remaining portion contains blowing agents, crosslinkers, pigments, and sometimes TPR blends for performance tailoring.

Downstream process integration

• Batch mixing with foaming and crosslinking agents, followed by injection or compression molding. Curing and post-foaming at 160–200°C, with subsequent die-cutting or secondary assembly as needed for final product geometry.

Final product types

• Athletic shoe midsoles and insoles
• Martial arts and yoga mats
• Protective padding for helmets and guards
• Flexible slipper and sandal soles

4. Wire & Cable Insulation Compounds

Wire and cable insulation compound producers deploy this EVA as the functional base resin for low-voltage wire coatings, controlling dielectric strength, flexibility, and stress crack resistance for consumer and light industrial lines. The material's melt flow stability allows clean extrusion, minimizing waste and ensuring stable dimensions in both single and multi-layer insulation builds. The grade’s compatibility with fire retardants supports both halogenated and non-halogenated compound formulations as specified by downstream electrical code requirements.

Industry compliance standards

• UL 62/UL 758 for wire and cable safety
• IEC 60332 fire performance testing
• RoHS Directive for heavy metal content
• REACH compliance for substance registration

Typical usage ratio

• 50%–85% EVA, adjusted depending on flame retardant filler and plasticizer loadings. High insulation grades may increase EVA content or use blends with LLDPE for cost/performance tailoring.

Downstream process integration

• Hot melt compounding in kneader followed by extrusion onto copper/aluminum conductor, often in tandem with crosslinking via silane or peroxide curing lines. Post-extrusion cooling and cutting for reel packaging.

Final product types

• Power cord insulation (home appliances, consumer devices)
• Flexible cable jacketing
• Low-voltage automotive wire insulation
• Ethernet and telecom cable insulation

5. Film and Sheet for Food Contact Packaging

Food packaging converters adopt this EVA grade as a blending resin to enhance clarity, heat seal strength, and impact resistance for flexible films used in direct or indirect contact with food. The copolymer’s migration properties and low odor profile enable compliance with international food safety regulations, supporting use in multilayer co-extruded pouches, bag-in-box liners, and flexible lidstock. Adjustments permit mechanical performance tuning without compromising regulatory acceptance.

Industry compliance standards

• EU Regulation No 10/2011 on plastic materials intended for food contact
• FDA 21 CFR 177.1350 for ethylene-vinyl acetate copolymers
• FSMA (Food Safety Modernization Act) for US markets
• China GB 9685-2016 for food additive use in packaging materials

Typical usage ratio

• 10%–25% EVA in polyolefin blends; increased for soft touch films up to 40%. Precise rate depends on clarity, seal strength, and stiffness targets for each packaging type.

Downstream process integration

• Direct blending with LLDPE, LDPE, or PP in blown film or cast film extruders. Co-extrusion as tie or sealing layers. Slitting, printing, and converting to roll goods or bags; film properties confirmed by migration and sealability testing per lot.

Final product types

• Bread and snack packaging films
• Frozen food and vacuum pouches
• Dairy product flexible lids
• Bag-in-box liquid liners