Applications of Sinopec Yanshan 24J6X EVA in Industrial Manufacturing

Sinopec Yanshan 24J6X EVA is an ethylene-vinyl acetate copolymer recognized for its balance of flexibility, clarity, and impact resistance. With controlled vinyl acetate content and melt index, this grade meets demanding standards across polymer processing industries worldwide. Detailed below are the principal industrial application segments, outlining regulatory benchmarks, precise usage ratios, points of entry into production, and finished product formats based on verified usage within global supply chains.

1. Hot Melt Adhesives for Packaging and Bookbinding

Bookbinding and packaging manufacturers incorporate 24J6X grade EVA for its fast-setting behavior, high tack, and strong adhesion on coated and uncoated substrates. Operators prefer this grade for high-speed gluing lines and automated carton sealing, where controlled viscosity and minimal odor are required. The raw material serves both continuous and batch compounding, offering stable performance even under temperature variation during storage and logistics.

Industry compliance standards

• FDA 21 CFR 175.105 Adhesives (for indirect food contact)
• EN 923:2015 (European Adhesive Terminology and Characterization)
• REACH SVHC substance restrictions (Europe)
• China GB 9685-2016 for Adhesives in Food Packaging

Typical usage ratio

• 15–35% of total adhesive formulation; adjusted based on softening point and intended peel strength. Higher concentrations improve flexibility for spine gluing in bookbinding.

Downstream process integration

• Direct addition to heated mixing tanks during adhesive compounding; melting and blending with waxes, resins, and stabilizers. Forms the polymer backbone in both reactive and non-reactive hot melt lines, granulated or pelletized for dosing.

Final product types

• Printed carton adhesives (case & carton sealing sticks/granules)
• Perfect binding adhesives for books and catalogs
• Labeling hot melts for beverage and canned goods packaging
• Edge banding adhesives for wood and furniture laminate surfaces

2. Film Grade EVA for Greenhouse and Agricultural Films

Agricultural film extruders leverage 24J6X EVA for multi-layer greenhouse covers and mulch films, exploiting its clarity, UV resistance, and softness. The raw material enables controlled shrinkage, improved tear resistance, and retention of mechanical integrity under sunlight exposure. Specially designed blown and cast film lines employ this EVA for formulations requiring both flexibility and consistent gauge control.

Industry compliance standards

• ISO 9001:2015 (Quality management systems)
• EN 13206 (Plastics – Film for silage and agriculture)
• China GB/T 11115-2009 (Polyethylene for Agriculture Film)
• RoHS Directive (2011/65/EU) substance limitations

Typical usage ratio

• 8–25% incorporation in co-extruded agricultural films; higher content imparts improved low-temperature flexibility and transparency but is moderated for mechanical strength. Adjusted according to film gauge and climate performance targets.

Downstream process integration

• Fed through gravimetric blenders into extruders during mono- or multi-layer film production. Blended with LDPE/LLDPE and stabilizer packages at the hopper to achieve the balance of flexibility, puncture, and optical clarity.

Final product types

• Greenhouse covering films with UV stabilization
• Mulching and soil fumigation films
• Low tunnel and protective vegetable films
• Horticultural shrink wrap and lamination films

3. Cable Sheathing and Wire Insulation Compounds

Wire and cable compound manufacturers routinely select 24J6X EVA to achieve flame-retardancy, flexibility, and dielectric strength in insulation and sheathing applications. Its compatibility with various flame retardant additives and plasticizers supports UL and international requirements for low-smoke, non-halogenated cables used in commercial and industrial wiring systems, especially where flexible installation is required.

Industry compliance standards

• UL 1581 (Reference Standard for Electrical Wires, Cables)
• IEC 60502-1 & IEC 60332 (power cables/fire performance)
• RoHS (Restriction of Hazardous Substances)
• CE Marking protocols for electric cables

Typical usage ratio

• 25–38% of cable compound by weight; content adjusted per flame retardant, UV stabilizer, and target hardness. Higher ratios for increased flexibility in low-voltage, appliance, and portable cordage insulation.

Downstream process integration

• Integrated into masterbatch compounding via twin-screw extruders; premixed with ATH (aluminum trihydrate), stabilizers, and processing aids, then pelletized for subsequent extrusion as sheath or insulation over copper/aluminum conductors.

Final product types

• Low-voltage flexible power cables
• Signal and data wire insulations
• Halogen-free flame-retardant cable sheaths
• Control and instrumentation cable jackets

4. Foamed Sports and Leisure Goods

Manufacturers producing sports mats, shoe midsoles, and leisure foams employ this EVA for its resilience and energy absorption properties. The 24J6X grade allows for controlled cell structure during the crosslinking and foaming processes, delivering consistent density and cushioning for athletic and yoga-related products. Its chemical stability ensures compliance with health safety in contact applications.

Industry compliance standards

• REACH regulation (EC 1907/2006) compliance for chemical safety
• EN 71 Part 3 (Safety of Toys – migration of certain elements)
• Prop 65 compliance (California OEHHA substances)
• ISO 14001:2015 (Environmental Management, for manufacturing sites)

Typical usage ratio

• 60–80% of foam compound; content regulated in relation to azodicarbonamide or expanding agent dosage and required shore hardness. Lower ratios applied for denser, weight-critical athletic goods.

Downstream process integration

• Dispensed into batch blenders; mixed with crosslinking agents, color pigments, and foaming additives, then subjected to thermal press or continuous foaming lines. Sheet or block foam is then die-cut or laminated depending on product format.

Final product types

• Sports and yoga mats
• Foamed midsoles and insoles for athletic footwear
• Leisure and beach slippers
• Protective padding and puzzle mats

5. Solar Panel Encapsulation Films

Photovoltaic module processors incorporate this EVA grade for encapsulation lamination, benefiting from its high optical transmittance, cross-linkability, and resistance to UV-induced degradation. The polymer maintains electro-insulating characteristics throughout the service life of the module, ensuring stability under thermal cycling and environmental stress. Laminators rely on precise melting and flow under vacuum and pressure conditions for defect-free encapsulation.

Industry compliance standards

• IEC 61215 (Crystalline silicon terrestrial photovoltaic modules)
• TUV Rheinland standards for PV encapsulants
• UL 1703 (Flat-Plate Photovoltaic Modules and Panels)
• China GB/T 9535-2008 (EVA resin for solar cells encapsulation)

Typical usage ratio

• 100% of individual encapsulation sheet; compounded with UV absorbers and crosslinking agents as per module design. Thickness and exact formulation tailored to module size and climatic exposure profile.

Downstream process integration

• Co-extruded or cast into membrane sheets; these preformed films are laminated onto photovoltaic cell assemblies in vacuum presses at temperatures between 140–155°C, ensuring uniform coverage, crosslinking, and moisture barrier performance.

Final product types

• Punch-cut encapsulation films for mono and polycrystalline PV modules
• Flexible and rigid solar panel laminates
• Building-integrated photovoltaic (BIPV) encapsulant layers
• Specialty modules for outdoor and mobile power applications