Applications of ExxonMobil Escorene Ultra LD 720 EVA in Industrial Manufacturing

ExxonMobil Escorene Ultra LD 720 EVA serves as a specialty ethylene-vinyl acetate copolymer widely adopted for advanced compounding and conversion in adhesive, packaging, cable, and film production. Our direct supply chain supports large-scale, continuous manufacturing in sectors demanding consistent material performance aligned with evolving compliance frameworks.

1. Hot Melt Adhesive Formulation

Industrial producers of hot melt adhesives employ LD 720 EVA as a primary polymeric base due to its balance of flexibility, tack, and compatibility with a wide range of tackifiers and waxes. It supports low-temperature processing and rapid set properties critical for high-speed packaging lines and woodworking assembly. Its consistent vinyl acetate content yields reliable bond strength for automated dispensation onto substrates including corrugated board, textile, plastics, and lightweight metals, and it demonstrates stable performance during extended storage conditions without significant degradation or yellowing.

Industry compliance standards

• EU Regulation (EC) No 1935/2004 for food contact materials (indirect use, adhesives)
• FDA 21 CFR 175.105 (Adhesives in food packaging)
• REACH SVHC absence declaration on phthalates/regulated plasticizers
• ISO 9001 process quality certification required for industrial adhesive batching

Typical usage ratio

• 30% to 45% by weight in total adhesive batch; ratio adjusted based on required tack and viscosity
• Higher content for bookbinding and case sealing; lower content for general purpose packaging adhesives

Downstream process integration

• Feedstock melted in jacketed tanks at 120–150°C
• Blended with hydrocarbon tackifiers, waxes, stabilizers using high-shear mixers
• Pumped to extrusion or pelletizing units for block or pellet adhesive forms
• Directly dosed in in-line compounding for continuous adhesive coating lines

Final product types

• Hot melt glue sticks for manual and automated application
• Pressure-sensitive label adhesives
• Case and carton sealing hot melts for food and beverage packaging
• Bookbinding and spine adhesives for publishing lines

2. Film Casting for Flexible Packaging

Converters in the flexible packaging sector select this EVA material for its outstanding film clarity and impact resistance. The polymer’s stable melt index supports low gauge blown film and cast film processes that demand pinhole-free layers and homogeneous sealing characteristics. This enables manufacturers to produce pouches, bags, and lamination substrates with controlled shrinkage, low haze, and enhanced printability for both food and non-food products. Consistency in resin supply and performance supports 24/7 extrusion and lamination lines meeting customer shelf-life requirements.

Industry compliance standards

• EU 10/2011 regulation for plastics intended for food contact (film substrates)
• FDA 21 CFR 177.1350 (Ethylene-vinyl acetate copolymers, food packaging)
• BRCGS Packaging Materials Standard for hygienic manufacturing
• ISO 14001 certification for environmental management in packaging plants

Typical usage ratio

• 20% to 60% by weight, depending on target sealing temperature and flexibility
• Typical 35% in multilayer food pouches; higher levels for deep freeze and vacuum bags

Downstream process integration

• Direct feeding to blown film or cast film extruders
• Coextruded as middle or sealant layer with polyethylenes or barrier resins
• Online corona or plasma treatment before printing or laminating
• Regrind integration from trim scrap to support closed-loop manufacturing

Final product types

• Food pouch films (retort, vacuum, frozen foods)
• Lidding films for rigid trays (dairy, meat)
• Wrap-around shrink sleeves for beverage bottles
• Non-food film linings (detergent sachets, medical device packaging)

3. Wire and Cable Insulation Compounding

Wire and cable manufacturers incorporate this EVA copolymer into insulation compounds where its electrical insulating properties and stress crack resistance are critical. It supports extrusion at moderate temperatures with low gel content, minimizing dielectric loss and reducing line failures during high-speed cable jacketing. Specific grades support flame retardant compounding, leveraging tight vinyl acetate content control for consistent mechanical flexibility, essential when producing cables for electronics, automotive, and communications infrastructure.

Industry compliance standards

• IEC 60502-1: Power cables with extruded insulation and their accessories
• UL 62/758 for flexible cords and appliance wiring material
• RoHS 2011/65/EU for lead-free, hazardous substance control
• ISO/TS 16949 for automotive cable manufacturing QA

Typical usage ratio

• Up to 60% by weight in insulation compound formulations
• Lower levels (20–35%) for semi-conductive or flame-retardant layers, adjusted for dielectric strength

Downstream process integration

• Melt blending with mineral fillers, fire retardants (ATH, Mg(OH)₂), and antioxidants
• Compounding via twin-screw extrusion
• Pelletizing for subsequent transfer to cable coating extruders
• Direct extrusion onto copper or aluminum wire cores for continuous insulation lines

Final product types

• Low voltage building wire insulation
• Flexible appliance cable jackets
• Automotive wire harness coverings
• Ethernet and telecom cable sheaths

4. Solar Panel Encapsulation Sheet Production

Photovoltaic module producers rely on LD 720 EVA for producing encapsulation sheets that protect solar cells against weathering, moisture ingress, and electrical degradation. With precisely controlled melt flow and low gel formation, our EVA enables uniform sheet extrusion and consistent cross-linking during lamination. This ensures high optical transmission, secure cell fixation, and long-term stability when subjected to UV exposure and temperature cycles, supporting extended warranty periods and international certification for solar power installations.

Industry compliance standards

• IEC 61215: Crystalline silicon terrestrial photovoltaic modules (qualification test)
• UL 1703 for US solar panel safety
• ISO 9001 process controls for module manufacturing
• RoHS and REACH compliance on absence of critical substances

Typical usage ratio

• 95% to 100% EVA as the encapsulant layer
• Small additives for cross-linking and UV stabilization (not exceeding 5% by weight)

Downstream process integration

• Sheet extrusion at 120–145°C, direct calendering to desired thickness
• Laminate stack assembly with glass/tarpaulin and backsheet
• Thermal lamination and cross-linking during module encapsulation
• In-line optical inspection for gel and bubble minimization

Final product types

• Encapsulant sheets for crystalline silicon PV modules
• Backsheet lamination for flexible or thin-film solar panels
• Glass-glass module encapsulation layers
• Specialty solar film rolls for emerging photovoltaic technologies

5. Footwear Sole and Foam Injection Molding

Industrial converters in the footwear sector use this EVA grade in foam compound recipes for direct injection molding of midsoles, insoles, and outsole components. Its balanced flexibility and low temperature response support efficient cross-linking and blowing agent compatibilization, providing footwear OEMs with consistent cell structure, energy return, and abrasion resistance. EVA foams manufactured with this material meet targeted compression set and density ranges required by sports, leisure, and safety footwear brands, maintaining process reproducibility under high-volume manufacturing cycles.

Industry compliance standards

• GB/T 15107-2013 for EVA sole technical specifications
• ISO 9001 and ISO 14001 for process and environmental controls in footwear
• REACH compliance for non-use of restricted colorants or phthalates
• EN ISO 20345 safety requirements for protective footwear

Typical usage ratio

• 65% to 90% of foam compound bulk; reduced content in blends for specialty properties
• Higher content for soft midsoles; lower content for rigid outsole blends

Downstream process integration

• Premix with cross-linking agents, chemical blowing agents, and color masterbatches
• Foam granulate produced via twin-screw extrusion or in-line blending units
• Direct metering to foam injection or compression molding machines
• Post-mold hot cure/cooling to achieve target expansion, cell size, and surface texture

Final product types

• Athletic shoe midsoles and insoles
• Children's and casual footwear sole units
• Safety boot outsoles
• Injection molded sandals and flip-flop soles