Applications of Reliance RELENE EVA1820 EVA in Industrial Manufacturing

Reliance RELENE EVA1820 EVA is a copolymer offering specific properties and consistency demanded in specialized industrial processing environments. We manufacture this grade for integration into multiple downstream sectors, supporting quality outcomes and compliance through controlled formulation and supply consistency. Below, we detail the main industrial applications with attention to actual use cases, industry-mandated standards, process integration, and end-product typologies.

1. Wire and Cable Insulation Compounds

Wire and cable manufacturers incorporate this EVA grade as a key resin for low-voltage insulation and sheathing compounds, supporting electrical and physical performance under variable thermal and installation demands. Formulators select it for its controlled vinyl acetate content, melt index, and compatibility with flame retardant systems to meet strict local and international cable standards, especially where halogen-free or flexibility is needed. Process engineers finely adjust dosing through high-shear mixing into masterbatch and direct compounding lines, aligning end properties with voltage ratings and end-user requirements.

Industry compliance standards

• UL 1581 (Reference Standard for Electrical Wires, Cables, and Flexible Cords)
• IEC 60227/IEC 60502 (International Cable Standards)
• RoHS Directive (2011/65/EU), EU REACH Regulation
• EN 50363-4-1 (Insulating compounds based on EVA for use in cables)

Typical usage ratio

• 25% to 65% by total compound mass; exact content varies with cable voltage class, desired flexibility, and flame retardancy targets

Downstream process integration

• Direct blending in Banbury or Buss continuous compounders, followed by extrusion onto copper or aluminum wire conductors
• In-line pelletizing for masterbatch production before cable extrusion

Final product types

• Low-voltage electrical wires (building cables, appliance wires)
• Flexible power cords (consumer appliances, industrial power leads)
• Halogen-free flame retardant cables (data cables, instrumentation cables)
• Automotive wire harness insulation jackets

2. Hot Melt Adhesive (HMA) Formulations

We supply this grade to adhesive manufacturers for use as a primary polymer backbone in hot melt adhesives for packaging, hygiene, woodworking, and bookbinding applications. The balance between adhesion and flexibility, set speed, and heat resistance makes it well-suited for pressure-sensitive and fast-setting blends. EVA1820 allows for precise viscosity control during compounding and compatibility with tackifiers, plasticizers, and waxes. Manufacturers adjust the blend for end-use substrate types and mechanical needs, ensuring adhesives pass performance tests imposed by brand owners and regulatory institutions.

Industry compliance standards

• FDA 21 CFR 175.105 (Adhesives for indirect food contact)
• EU Regulation 10/2011 (Plastic materials and articles intended to come into contact with food)
• ISO 9001:2015 (Quality Management Systems for adhesive production)
• EN 923 (Adhesives — Terms and definitions)

Typical usage ratio

• 20% to 40% of total adhesive mass; adjusted based on desired bond strength, open time, and end-use application stress

Downstream process integration

• Kneader/blender feeding during adhesive compounding
• Direct extrusion or batch melting in bulk hot melt systems before pelletizing or block forming

Final product types

• Hot melt adhesive pellets/blocks for industrial use
• Hotmelt films for packaging and lamination
• Pressure-sensitive adhesives for tapes and labels
• Specialty bookbinding and wood assembly adhesives

3. Solar Panel Encapsulation Sheets

Solar module manufacturers utilize this EVA grade in the production of encapsulation layer films. The consistent melt flow and EVA content support high optical clarity, flexibility, and long-term durability under outdoor weathering. Manufacturers process the resin through casting or extrusion, adding crosslinking agents and stabilizers to achieve the necessary performance after lamination. Finished modules undergo strict performance and aging tests to comply with international photovoltaic (PV) standards for product certification and lifetime assurance.

Industry compliance standards

• IEC 61215 (Crystalline Silicon Terrestrial PV Modules — Design Qualification and Type Approval)
• IEC 61730 (PV Module Safety Qualification)
• UL 1703 (Flat-Plate Photovoltaic Modules and Panels)
• ISO 4892-2 (Methods for exposure to laboratory light sources)

Typical usage ratio

• 100% base polymer for encapsulant sheet; additional additives and crosslinkers in low percentages (typically 0.5–5%)

Downstream process integration

• Film extrusion or calendaring before sandwich lamination in solar panel assembly
• In-line crosslinking and curing during panel production

Final product types

• Punched/cut EVA encapsulation films for PV modules
• Complete solar panel units (residential, commercial, utility scale)
• BIPV (Building Integrated Photovoltaic) modules
• Flexible solar solutions

4. Foam Manufacturing for Sports, Footwear, and Packaging

Producers in the footwear, athletic equipment, and protective packaging sectors use this EVA for making closed-cell, lightweight foams with stable expansion and excellent resilience. Adjusting crosslinking, blowing agent, and nucleating agent levels tailors foam hardness, density, and flexibility to the application. Manufacturers ensure compliance with safety and quality inspection regimes for skin contact products, as well as mechanical protection standards in industrial packaging. Consistent polymer properties allow for predictable foam conversion, processing on autoclaves, or continuous lines.

Industry compliance standards

• ISO 20344 (Footwear — Test methods for footwear materials and components)
• EN 71-3 (Safety of toys — Migration of certain elements)
• REACH Annex XVII (Restricted substances in consumer goods)
• UL 94 (Tests for Flammability of Plastic Materials)

Typical usage ratio

• 65% to 95% base polymer by mass, adjusted with fillers, crosslinkers, and processing additives; varies by target foam density and resilience

Downstream process integration

• Mastication and blending with blowing agents and crosslinkers in internal mixers
• Extrusion or compression molding followed by curing/expansion and die-cutting

Final product types

• Footwear midsoles and insoles (sports shoes, safety boots)
• Protective sports pads (mats, guards, helmet liners)
• Industrial and consumer packaging foam blocks/sheets
• Yoga/exercise mats and camping equipment foam products

5. Film and Sheet for Food Packaging

Food packaging converters select EVA1820 for blown and cast film extrusion to enhance sealability, puncture resistance, and clarity in multi-layer food contact films. Its well-controlled VA content and melt flow characteristics enable efficient co-extrusion with polyolefins or as tie layers in laminated films. Regulatory compliance for food safety is critical, requiring documentation of extractables, migration, and manufacturing hygiene. Final film structures vary by food type, packaging process temperature, and end-product shelf-life requirements.

Industry compliance standards

• FDA 21 CFR 177.1350 (Ethylen-vinyl acetate copolymers for food contact)
• EU 10/2011 (Plastic food-contact materials)
• GB 9685-2016 (Chinese Standard on food additive use for food contact materials)
• GMP Regulation EC 2023/2006 (Good Manufacturing Practice for food contact materials)

Typical usage ratio

• Typically 5% to 20% as tie layer or sealant layer in multi-layer films; can serve as up to 100% in mono-layer for select food wraps

Downstream process integration

• Feeding into multi-layer blown or cast film extrusion lines, often as a middle or sealant layer
• On-line corona or flame treatment pre-lamination

Final product types

• Laminated food pouches and sachets
• Fresh produce and frozen food bags
• Pharmaceutical and personal care flexible packaging
• Sealant components in retort and vacuum bags