Applications of Zhejiang Petrochemical V6110S EVA in Industrial Manufacturing

Zhejiang Petrochemical V6110S EVA sees extensive adoption across various manufacturing sectors due to its consistent melt flow, controlled vinyl acetate content, and stable physical properties. As the original producer, we closely observe application-driven formulation, local compliance requirements, and end-product performance at scale. Here we detail several core downstream application scenarios relevant to industrial users.

1. Hot Melt Adhesives Formulation for Packaging & Bookbinding

Manufacturers select V6110S for hot melt adhesive compounding because of its moderate VA content and reliable melt index. The resin delivers balanced tack, flexibility, and processability—crucial during high-speed packaging line runs and precision bookbinding. Compounders precisely adjust the resin-to-wax-to-tackifier ratio based on substrate and adhesion requirements. Each plant aligns with regional contact materials regulations and downstream equipment compatibility, ensuring adhesives fulfill both mechanical and certification needs for packaging, lamination, and hardcover books.

Industry compliance standards

• FDA 21 CFR 175.105 (Indirect food contact adhesives, United States)
• EU Framework Regulation (EC) No 1935/2004 for food packaging safety
• China GB 9685-2016 for additive use in food-contact adhesives
• REACH SVHC requirements for chemical safety

Typical usage ratio

• 20%–40% by weight in adhesive base (typically adjusted for viscosity—higher ratios for carton sealing, lower for spine glues; modifiers and waxes adapted to application demands)

Downstream process integration

• Feed directly to high-shear mixers or continual compounding extruders as backbone resin
• Dilute with tackifiers and waxes, followed by pelletizing or direct melt application
• Precise temperature and residence time control during blending to prevent crosslinking or degradation
• Quality checkpoints after cooling and pelletizing to verify adhesion, open time, and flexibility

Final product types

• Hot melt adhesive pellets for corrugated box sealing
• Spine glues for bookbinding machines
• Case and carton sealant sticks for automated lines
• Label adhesives for beverage, dairy, and consumer goods packaging

2. Solar Cell Encapsulant Sheet Production

Ethylene-vinyl acetate copolymers with controlled VA content—such as V6110S—form the primary base for encapsulant films in crystalline silicon solar panel modules. Conversion lines require consistent melt behavior for flat lamination and bubble-free filling between glass and cell layers. The processing must meet global clean energy and electrical safety standards, alongside stringent optical clarity, crosslinking control, and long-term UV durability benchmarks demanded by solar panel manufacturers.

Industry compliance standards

• IEC 61215/61730 Photovoltaic module qualification (global electrical & safety performance)
• UL 1703 PV module standard (North America)
• TÜV Rheinland safety and fire resistance for solar films
• RoHS Directive (2011/65/EU) for hazardous substance limits

Typical usage ratio

• 65%–85% by weight in encapsulant sheet masterbatch (resin proportion fine-tuned for thickness, crosslink agent level, and optical additive requirements)

Downstream process integration

• Continuous extrusion into sheets, with crosslinking system and UV stabilizers dosed inline
• Sheet calendering, cooling, and slitting into module-size rolls
• Vacuum lamination within module stack, thermal curing to form crosslinked barrier
• Quality control for gel content, transparency, and shrinkage at every batch

Final product types

• Solar encapsulant films and sheets for photovoltaic panels
• Pre-laminated module interlayers for multi-glass modules
• Custom compound films for flexible or building-integrated PV
• PV module repair and assembly tape rolls

3. Wire and Cable Insulation Compounding

Wire and cable manufacturers demand repeatable insulation performance from EVA grades like V6110S, owing to its electrical insulation, flexibility in cold conditions, and easy blending with flame retardants and stabilizers. Cable compounders carefully balance resin, plasticizers, and mineral fillers based on voltage class. After compounding, material must pass rigorous mechanical, flame resistance, and migration tests in cable jacketing and insulation production.

Industry compliance standards

• UL 1581 Wire & cable flame test (U.S. market)
• IEC 60332-1-2, 60754-1/2, and 61034 for fire and halogen performance (global/EU)
• GB/T 2951-2010 for cable insulation (China)
• REACH Annex XVII for restricted substances

Typical usage ratio

• 15%–45% by weight in compound formula (high VA levels for low voltage, lower for high-voltage insulation; loaded with 30–50% flame retardants as process and performance require)

Downstream process integration

• Dry-blend resin with imported or local fillers and stabilizers
• Feed to Banbury or twin screw extruder for direct pelletization
• Extrude through cable coating lines onto wire cores or over sheathing layers
• In-process tensile and elongation tests after cooling, followed by electrical property checks

Final product types

• Power cable insulation for household and industrial wiring
• Data and telecommunication cable jackets
• Flexible flat ribbon wires for appliances
• Fire-retardant sheathings for building cables

4. Foam Shoe Sole and Midsole Manufacturing

EVA foaming lines for athletic and casual footwear rely on the balance of flexibility, resilience, and cell structure density offered by 6110S-grade resin. Producers customize ratios to control rebound and foam shrinkage to achieve cloud-like comfort or high-density shock absorption. Compounding must meet global footwear chemical content restrictions, specific mechanical properties, and local labeling requirements. Process engineers monitor foaming agents, mold cycle times, and post-curing for dimensional stability in batch and continuous mold systems.

Industry compliance standards

• EN 71-3 Safety of toys (extractable elements for consumer shoes in EU)
• REACH SVHC & Annex XVII (phthalates, PAHs, and restricted substances limits)
• GB 25038-2010 for EVA foam physical properties (China)
• California Proposition 65 for consumer chemical safety (U.S. retail)

Typical usage ratio

• 40%–90% by weight as foam base (filled and blended per desired foam hardness and function; adjustments for pigment or filler content)

Downstream process integration

• Premix with blowing agents, crosslinkers, and pigments in intensive mixer
• Sheet extrusion, followed by foaming and molding in press or rotary mold
• Cooling, demolding, and trimming with in-line hardness testing
• Surface activation or printing for branding (where required)

Final product types

• Shoe midsoles for athletic, sandals, and leisure footwear
• Outsole sheets for cut-and-press systems
• Injection-molded slipper soles
• Anti-fatigue floor mats and sports pads (secondary processed foam)

5. Film and Sheet for Agricultural Coverings

EVA finds widespread use in coextruded greenhouse films and tunnel covers, favored for their capacity to enhance flexibility, increase light diffusion, and resist low-temperature crack propagation. Compounds require strict adherence to limits on extractables and must meet optical clarity and aging performance mandated by international and country-specific agricultural standards. Process integration takes place alongside stabilizer and UV absorber dosing, with mechanical properties tightly monitored for prolonged field life.

Industry compliance standards

• EN 13206:2021 Agricultural plastic films for use in agriculture and horticulture (Europe)
• GB 13735-2017 Agriculture-use plastic film (China)
• ISO 4892-2 Accelerated aging/weathering protocols
• REACH and RoHS for environmental and crop safety

Typical usage ratio

• 10%–25% blended with LDPE/LLDPE as coextrusion layer (adjusted based on desired haze, mechanical strength, region, and season longevity requirements)

Downstream process integration

• Premix EVA with PE pellet masterbatches in gravimetric feeders
• Coextrude in blown film lines with multi-layer die head
• Add functional additives inline, such as UV, IR stabilizers, and anti-drip agents
• Continuous testing for film thickness, haze, tensile strength, and weatherability

Final product types

• Greenhouse covering films (diffusion, thermal, and UV stabilized)
• Tunnel and mulch films for field crops
• Protective horticultural sheets for orchard and nursery use
• Anti-drip film rolls for intensive cultivation