Applications of Jiangsu Sailboat UE28400 EVA in Industrial Manufacturing

Jiangsu Sailboat UE28400 EVA, an ethylene-vinyl acetate copolymer with specified VA content and melt index, enables reliable performance across several critical industrial sectors. As the direct manufacturer, we ensure strict product uniformity and supply consistency for industrial processors seeking high transparency, flexibility, and thermal stability in high-volume production settings.

1. Photovoltaic Module Encapsulation

In solar panel manufacturing, the encapsulant layer requires a resin that offers strong UV stability, adhesion to glass and cells, and minimal water vapor transmission. Our raw material supports tight lamination cycles and uniform gel content, crucial for PID resistance. Downstream processors select formulation parameters to meet IEC industry standards, calibrating crosslinking initiator and antioxidant dosages for 25+ year module lifespans.

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 PV modules and panels
• RoHS; REACH SVHC (for hazardous substances)

Typical usage ratio

• Encapsulant blends use 80–95% EVA by mass, with the remaining formula comprising curing agents, UV absorbers, and antioxidants. Processors adjust EVA content based on desired elasticity and crosslinking speed for different module architectures.

Downstream process integration

• Feeds directly into extrusion, calendaring, or sheet casting to form pre-crosslinked sheets. These sheets undergo thermal lamination with glass and solar cells in vacuum laminators, where the crosslinking degree is tightly controlled.

Final product types

• Photovoltaic encapsulant films
• Solar panel front and backsheet encapsulation
• Building-integrated photovoltaic (BIPV) modules
• Flexible solar units

2. Foam Shoe Soles and Injection Molding Footwear

Footwear manufacturers utilize our EVA to achieve lightweight, cushioned, and resilient foam soles by direct injection or compression molding. Control over cell structure and hardness enables production of shoes meeting distinct performance and chemical safety specifications. Processors use batch or continuous foam expansion lines, carefully balancing foaming agent and filler ratios to meet end-customer ergonomic demands.

Industry compliance standards

• EN ISO 20344: Personal protective equipment test methods for footwear
• GB 30585: Safety requirements for children’s shoes (China)
• REACH Annex XVII (phthalates, restricted substances)
• California Proposition 65 (if exporting to US)

Typical usage ratio

• Base compound typically contains 55–80% EVA, 5–15% foaming agent (e.g., azodicarbonamide), and 10–25% fillers and crosslinkers. Adjustments depend on durometer, expansion ratio, and regrind content.

Downstream process integration

• Melt compounded in internal mixers, sheeted and pelletized, then foamed either by direct injection or in compression molds. Final molding and vulcanization completed in multi-stage thermal presses.

Final product types

• Sports shoe midsoles
• Slippers and sandals
• Safety shoe cushioning soles
• Antistatic work shoe bases

3. Hot Melt Adhesive Formulations

Adhesive specialists formulate hot melt systems using our EVA grade for applications demanding rapid tack, flexible bonds, and tailored open times. Its melt viscosity and polarity support stable blending with resin tackifiers, plasticizers, and waxes for both packaging and industrial assembly lines. Strict traceability in each lot guarantees predictable softening points and minimal gel formation, even in high-throughput lines.

Industry compliance standards

• FDA 21 CFR 175.105 for indirect food contact adhesives
• ISO 9001:2015-certified quality management in adhesive production
• REACH compliance (additives and overall mixture)
• ASTM D6496: Hot melt adhesive performance and bond strength

Typical usage ratio

• Pure EVA base 30–65% by mass, adjusted according to required bond strength and rheology. Tackifiers 20–50%, waxes/plasticizers 5–30%, with ratios fine-tuned for substrate compatibility.

Downstream process integration

• Our resin melts with co-additives in jacketed premelters or high-shear mixers, then dispensed onto substrates via extrusion, slot, or spiral spray during fast-paced automated assembly or packaging lines.

Final product types

• Carton and case sealing adhesives
• Bookbinding spines and edge glues
• Woodworking assembly adhesives
• Bottle labeling adhesives

4. Cable and Wire Insulation Compounds

Cable manufacturers use our EVA in halogen-free, flame-retardant insulation and sheathing compounds for voltage-rated wires. Its blend compatibility with inorganic fillers and fire retardants yields excelsior process stability, while tight particle size control assures defect-free cable extrusion. The materials' specified density and MI facilitate consistent processing parameters on high-speed extrusion lines.

Industry compliance standards

• IEC 60502: Power cables with extruded insulation
• UL 62: Flexible cords and cables
• IEC 60754-2: Low halogen content
• RoHS Directive 2011/65/EU

Typical usage ratio

• Compound formulations use 30–60% EVA, with ATH or magnesium hydroxide flame retardants up to 65% by weight. Specific ratios depend on target LOI and mechanical/tensile requirements per cable type.

Downstream process integration

• Incorporated into twin-screw extruders as the polymeric phase, co-compounded with retardants and crosslinkers prior to continuous extrusion onto copper or aluminum conductors, followed by online cooling, cutting, and marking.

Final product types

• Low smoke zero halogen (LSZH) cable jackets
• Building wire insulation
• High-voltage power cable covers
• Optical fiber buffer coatings

5. Film Blowing for Packaging Applications

Flexible packaging converters employ our EVA to enhance clarity, tear strength, and cold resistance in multilayer and monolayer blown films. Its defined melt flow properties support continuous blown film extrusion at narrow gauge tolerances, providing either barrier or sealing layers in food, medical, and specialty packaging. Downstream partners control layer thickness and blend ratio to match specific pack format and chemical contact needs.

Industry compliance standards

• FDA 21 CFR 177.1350: EVA copolymers in food packaging
• EU Regulation No 10/2011 on plastic materials for food contact
• GB 9685-2016: Food safety standards for plastic additives (China)
• BRCGS Packaging Materials Issue 6

Typical usage ratio

• EVA constitutes 5–35% of multilayer film blends, and up to 100% for specialty shrink or low-temperature sealing films. Processors modify EVA proportion based on target elasticity, seal initiation temperature, and transparency.

Downstream process integration

• Supplied as free-flowing pellets for direct feeding to blown or cast film extruders, with online gravimetric dosing for layer co-extrusion. Films receive corona or flame treatment before slitting and winding to maintain print adhesion.

Final product types

• Food wrapping and lidding films
• Cold-storage packaging films
• Medical packaging barrier liners
• Shrink overwraps and stretch film

6. Masterbatch Carrier Resin for Additive Dispersion

Color concentrate and additive masterbatch producers utilize EVA as a carrier due to its polarity and compatibility with various pigments and functional additives. With tailored viscosity, the resin ensures efficient dispersion in single-screw or twin-screw compounding, reducing screw torque and maintaining pellet integrity even during high pigment loadings. Proper selection of the grade avoids plate-out and agglomerate defects in finished pellets.

Industry compliance standards

• ISO 9001:2015 for documented quality and traceability in masterbatch production
• FDA 21 CFR 177.1350 and EC No 10/2011 for plastics in contact with food, as applicable for final applications
• REACH compliance of pigment/additive components
• RoHS (for electrical/electronic color batch uses)

Typical usage ratio

• EVA concentration in masterbatches is 35–75% by weight, depending on pigment or additive loading and processing temperatures in end-user lines. Processors balance between carrier flow and color strength needs.

Downstream process integration

• Melt compounding with pigments, UV stabilizers, or antistatics in extruders, followed by underwater or strand pelletizing. Processors control cooling and screening to ensure pellet uniformity and free-flowing delivery.

Final product types

• Color masterbatch concentrates
• Antistatic/UV stabilizer masterbatches
• Functional additive pellets for cables, films, and injection molding
• Low-processing temperature masterbatches