Applications of Sinopec Yanshan 14J2 EVA in Industrial Manufacturing

Sinopec Yanshan 14J2 EVA is an ethylene vinyl acetate copolymer designed specifically for industries requiring high flexibility, clarity, and stress-crack resistance. Our material serves as an essential performance component in several downstream sectors, enabling diverse processing methods and consistent product quality for a wide range of finished goods.

1. Cable and Wire Insulation Compounds

Sinopec Yanshan 14J2 EVA serves as a core raw material in low-voltage cable and wire jacketing applications where mechanical toughness and electrical properties must remain consistent under thermal cycling and prolonged outdoor exposure. Cable compound manufacturers rely on this EVA for its clean melt processability and compatibility with flame-retardant ingredients without compromising physical properties during extrusion and subsequent crosslinking.

Industry compliance standards

• IEC 60502-1: Power cables with extruded insulation and their accessories for rated voltages from 1 kV up to 30 kV
• UL 1581: Reference Standard for Electrical Wires, Cables, and Flexible Cords
• RoHS Directive (2011/65/EU): Restriction of Hazardous Substances
• REACH Regulation (EC No 1907/2006)

Typical usage ratio

• 15% – 35% by weight in insulation or sheathing compounds; adjusted based on required flexibility, elongation at break, and fire resistance grades

Downstream process integration

• Direct blending in the compounding stage with polyolefins, fillers, antioxidants, and flame retardants; pelletized mixture supplied for continuous extrusion onto conductor wires followed by crosslinking (either silane, peroxide, or irradiation methods) to achieve final insulation characteristics

Final product types

• Low-voltage power cables
• Telecommunication wires and LAN cables
• Flexible appliance cords and automotive wiring harnesses

2. Solar Photovoltaic Encapsulant Films

Module film production plants utilize 14J2 EVA for solar encapsulation because of its clarity, long-term UV durability, and reliable adhesion to glass and silicon wafer surfaces after crosslinking. The resin’s melt flow and purity ensure bubble-free lamination and optimal photovoltaic conversion by minimizing light loss through scattering or chemical instability throughout the module lifecycle.

Industry compliance standards

• IEC 61215: Crystalline silicon terrestrial photovoltaic modules – Design qualification and type approval
• UL 1703: Flat-Plate Photovoltaic Modules and Panels
• TÜV Rheinland 2PfG 1169/08.2007 (PV Modules: Encapsulation Material Test)
• ISO 9001: Quality Management System (film production process)

Typical usage ratio

• 60% – 100% by weight as the major resin in encapsulant formulations; loading determined by required lamination thickness and crosslinking parameters

Downstream process integration

• Pelletized resin melted and fed to blown or cast film extrusion lines; compounded with curing agents and adhesion promoters; extruded films calendered, cut, and supplied for two-layer lamination over photovoltaic cells prior to crosslinking in module assembly lines

Final product types

• Encapsulant sheets for crystalline silicon and thin-film PV modules
• Backsheet composite films for enhanced module durability

3. Hot Melt Adhesives

Adhesive manufacturers employ this EVA grade in formulating hot melt adhesives where balance between adhesion, flexibility at low temperatures, and compatibility with varied tackifiers is critical. 14J2 EVA supports fast-melt processing, stable viscosity control, and strong bonding performance across packaging, woodworking, textile, and automotive lamination lines, minimizing char formation and ensuring easy machine cleanup.

Industry compliance standards

• FDA 21 CFR 175.105: Adhesives for indirect food contact (where relevant)
• ISO 9001: Quality certification in adhesive production
• GB/T 2793-1995: General test methods for adhesives
• European Packaging and Packaging Waste Directive 94/62/EC

Typical usage ratio

• 20% – 45% by weight in hot melt adhesive bases; dosage varies with adhesive grade, open time, and required bonding strength of end-use

Downstream process integration

• Continuous blending of EVA pellets with tackifiers, waxes, and plasticizers in high-shear kettles; mixture passed through extruders and pelletized or formed into blocks or pillows; these are melted and applied to substrates during packaging or product assembly

Final product types

• Case and carton sealing adhesives
• Bookbinding glues
• Automotive interior trim adhesives
• Textile and footwear hot melts

4. Foam Sheet and Profile Production

Producers of crosslinked and non-crosslinked foam rely on 14J2 EVA as a matrix polymer due to its fine cell structure, cushioning properties, and chemical compatibility with foaming agents and crosslinkers. This grade enables lightweight foam with consistent resiliency, shock absorption, and thermal insulation, essential for consumer products as well as sports and leisure goods.

Industry compliance standards

• EN 71-3: Safety of Toys – Migration of certain elements (for toy foams)
• REACH Regulation (EC No 1907/2006)
• ISO 14001:2015 (environmental management relevant to foam production)
• GB 9685: Hygienic standards for the use of additives in food contact materials (for relevant foams)

Typical usage ratio

• 55% – 85% by weight; adjusted according to desired foam density, cell structure, and the proportion of blow agents and crosslinking systems

Downstream process integration

• EVA granules mixed homogeneously with blowing agents, nucleators, pigments, and crosslinkers; processed in batch or continuous extrusion foam lines; foamed via autoclave, oven, or chemical crosslinking to achieve closed or open cell structures, then cut or molded to shape

Final product types

• Shock-absorbing pads and mats
• Shoe sole inserts and insole sheets
• Protective packaging foams
• Leisure and sports surface mats

5. Film Blowing and Flexible Packaging

Flexible packaging manufacturers use this resin grade in blown film applications for its sealing strength, puncture resistance, and optical clarity. The controlled vinyl acetate content supports easy processing on high-speed film lines and provides consistent dispersion of slip and anti-block additives, resulting in reliable film performance for food, medical, and industrial packaging end-uses.

Industry compliance standards

• FDA 21 CFR 177.1350: Ethylene-vinyl acetate copolymers for food-contact packaging
• EU Regulation 10/2011: Plastics materials and articles intended to come into contact with food
• ISO 22000: Food safety management systems (for packaging facilities)
• GB 4806.6-2016: National Food Safety Standard – Plastic Resins for Food-Contact

Typical usage ratio

• 10% – 30% blended with LDPE or LLDPE; proportion set according to film thickness, clarity, and sealing temperature required for the specific packaging grade

Downstream process integration

• EVA resin fed into the gravimetric dosing hopper and dry-blended with other base polymers, followed by melt compounding in the extruder; extruded as mono-layer or multi-layer films; slitted and wound for secondary printing, lamination, and pouch forming

Final product types

• Food and medical pouch films
• Frozen food and vacuum packaging
• Hygienic product wrapping films
• Flexible tube and bag stock