Applications of Jiangsu Sailboat 18J3 EVA in Industrial Manufacturing

Jiangsu Sailboat 18J3 EVA finds broad use in high-value downstream sectors due to its tailored vinyl acetate content, controlled melt index, and proven batch consistency. As a primary raw material, it integrates into established industrial chains for specialty polymers, foam materials, hot melt adhesives, footwear compounding, and wire & cable insulation. Our production adheres to strict traceability, molecular weight control, and specification discipline to ensure processing stability in each targeted application field.

1. Solar Photovoltaic Encapsulant Film Manufacturing

Manufacturers use 18J3 type EVA for encapsulant film in crystalline silicon solar modules, leveraging its transparent, crosslinkable matrix. The raw material enters the extrusion and calendaring process, with precise peroxide crosslinking schedules and antioxidant stabilization to meet outdoor weathering and lamination durability. Film producers must validate each batch against both electrical and optical safety benchmarks, balancing transmittance and adhesion with stringent dimensional control.

Industry compliance standards

• IEC 61215:2016 (Crystalline Silicon Terrestrial Photovoltaic Modules)
• UL 1703 (Flat-Plate Photovoltaic Modules and Panels)
• RoHS Directive 2011/65/EU (Restriction of Hazardous Substances)
• ISO 9001:2015 Quality Management System

Typical usage ratio

• 85–95% base polymer in encapsulant masterbatch; 5–15% additives (crosslinking initiator, UV absorbers) adjusted for module design, process temperature, and laminate thickness.

Downstream process integration

• Entering melt compounding and film extrusion, followed by inline peroxide blending, sheet forming, and in situ crosslinking before lamination onto PV cells.

Final product types

• Encapsulant film sheets for photovoltaic modules
• Backsheet intermediate materials
• Cured multilayer solar panel composites

2. Hot Melt Adhesives for Packaging and Bookbinding

Formulators rely on 18J3 grade EVA to produce high-cohesion hot melt adhesives, benefiting from its balanced flow properties and vinyl acetate percentage. This raw material, processed via melting and mixing, provides open time, tack, and pot life control to optimize machine runnability. Adherence to composition disclosure requirements and product performance scope underpins compliant operation for end-users in automated packaging and industrial bookbinding lines.

Industry compliance standards

• FDA CFR 21 175.105 (Adhesives for Food Packaging)
• REACH Regulation (EC) No 1907/2006 (Safety Data and Registration)
• EN 15460 (Hot Melt Adhesives for Bookbinding)
• ISO 14001 (Environmental Management System)

Typical usage ratio

• Base polymer content of 30–60% in adhesive matrix; ratio tailored with wax and tackifier depending on melt viscosity, application temperature (100–160°C), and required set speed for end-use substrates.

Downstream process integration

• Used in hot mix tanks with real-time dosing of resins and stabilizers, proceeding to extrusion or slot-die coating onto packaging substrates or book spines before immediate assembly and cooling.

Final product types

• Case and carton closing adhesives
• Spine glues for perfect binding in books and magazines
• Product assembly and labeling adhesives

3. Crosslinked Foam Production for Sports and Footwear

Consumer product sectors specify 18J3 EVA for crosslinked foam blocks used in midsoles, insoles, and protective padding. The manufacturing protocols require careful temperature control and nucleating agent selection for uniform cell structure. Regulatory focus lies in safe polymer decomposition, migration limits, and mechanical resilience standards, especially for items in direct skin or foot contact, prompting in-depth compound validation and finished foam testing.

Industry compliance standards

• REACH Regulation (Annex XVII, phthalates and PAHs restrictions)
• ISO 20344:2021 (Footwear Testing Methods)
• GB/T 28011-2011 (Footwear Mechanical Performance, China)
• EN 71-3 (Safety of Toys: Migration of Certain Elements, for children's foam parts)

Typical usage ratio

• 60–95% EVA resin in foam compound; content varies per density target, with azodicarbonamide or other blowing agents at 2–5%, crosslinking at 0.8–3%.

Downstream process integration

• Incorporation in Banbury or twin-screw mixers, with pre-blending of colorants and expansion agents, followed by continuous sheet extrusion, thermal expansion, crosslinking, and die-cutting.

Final product types

• Sports shoe midsoles and insoles
• Shock-absorbing mats
• Protective foam for safety gear
• Recreational foam tiles

4. Flexible Wire and Cable Insulation Compounds

Electrical component makers use 18J3 series EVA for low-voltage wire and cable insulation. Its composition supports flame retardant loading and stable processing in twin-screw extrusion. Downstream compliance comprises both material purity and dielectric property benchmarks, with continuous sample tracking to avoid migration of restricted substances. Compounding partners focus on cable surface finish, tensile retention, and heat aging for performance over years of field use.

Industry compliance standards

• IEC 60245-1:2017 (Rubber and PVC Insulated Cables)
• UL 1581 (Reference Standard for Electrical Wires, Cables)
• RoHS Directive (EU) 2015/863 (Phthalate and heavy metal content)
• GB/T 2951.1–2008 (Electrical Cable Insulation Test, China)

Typical usage ratio

• Major constituent at 40–75% in wire compound; flame retardant fillers (ATH or magnesium hydroxide) at 20–60%, with ratio determined by local insulation thickness and flexibility specifications.

Downstream process integration

• Feeding to compounding extruder with cable-grade plasticizers and stabilizers, melt-kneading, pelletizing, and direct jacket co-extrusion onto copper or aluminum conductors.

Final product types

• Flexible power cable insulation
• Automotive wire sheathing
• Jacket compounds for control and signal cables