Applications of Mitsui Chemicals 150 EVA in Industrial Manufacturing

Mitsui Chemicals 150 EVA is a high-quality ethylene-vinyl acetate copolymer widely adopted in advanced manufacturing environments for its consistent performance in critical polymer modification, film production, and specialty foam processing. Below, we detail its primary industrial downstream use cases, outlined by industry-specific requirements and technical integration.

1. Photovoltaic Encapsulation Films for Solar Modules

Leading solar module manufacturers consistently select this grade due to its high transparency, controlled melt flow, and moisture resistance, all of which significantly enhance module longevity and power output. The raw material forms the core element of encapsulation films that safeguard sensitive solar cells during the lamination phase, offering strong crosslinking performance and electrical insulation in field-deployed modules.

Industry compliance standards

• IEC 61215 for crystalline silicon terrestrial photovoltaic modules
• TÜV Rheinland 2 PfG 1169/11.2007
• UL 1703/UL 61730 for safety of flat-plate photovoltaic modules
• RoHS Directive (2011/65/EU) for hazardous substances

Typical usage ratio

• 70-85% as the base polymer in encapsulant film formulations; adjustments made for UV stabilizer and crosslinker loadings based on module type and service environment

Downstream process integration

• Compounders dry-blend EVA copolymer with curing agents and formulate masterbatches; downstream, film extrusion lines convert this mix into rollstock for lamination

Final product types

• P/V encapsulation films for crystalline silicon and thin-film solar modules
• UV-resistant laminated sheets for bifacial and high-efficiency solar panels

2. Hot Melt Adhesives for Packaging and Bookbinding

Adhesive formulators rely on this EVA’s melt viscosity and flexibility to produce thermoplastic hot melt systems with controlled open times—essential in high-throughput packaging lines and must-bond book spines where heat resistance and peel strength determine end-product reliability. The material’s compatibility with tackifiers and waxes improves bond formation on coated and uncoated substrates.

Industry compliance standards

• FDA 21 CFR 175.105 for adhesives used in food packaging
• REACH Regulation (EC) No 1907/2006 for chemical safety
• ISO 12460-3 for formaldehyde emission (bookbinding)
• EN 923:2015 (Adhesives terminology and test methods)

Typical usage ratio

• 20-40% by weight in final hot melt adhesive formulations; ratio determined by desired flexibility, set speed, and bond strength requirements

Downstream process integration

• Producers melt-blend EVA with tackifiers, waxes, and plasticizers; the resulting compound is pelletized or melted directly into packaging or bookbinding application equipment

Final product types

• Hot melt adhesives for case and carton sealing
• Perfect binding adhesives for softcover books
• Pressure-sensitive adhesives for specialty labeling

3. Cable Sheathing and Wire Insulation Compounds

The raw material’s intrinsic electrical properties make it an essential component in the insulation layer of low and medium voltage cables for data centers, automotive harnesses, and industrial control lines. Its resilience against weathering, UV, and stress cracking stabilizes cable lifecycle performance, especially in outdoor and buried cable installations, where failure risks must be minimized by material integrity.

Industry compliance standards

• IEC 60502 for power cables with extruded insulation
• UL 1581 (Reference Standard for Electrical Wires, Cables, and Flexible Cords)
• EN 50363-3 for insulation and sheathing materials
• RoHS and REACH for restriction of hazardous substances

Typical usage ratio

• 35-60% as the primary polymer matrix in insulation or sheath blends; ratios adjusted for required dielectric strength, flexibility, and fire performance

Downstream process integration

• Compounding facilities incorporate EVA into masterbatches with plasticizers and flame retardants, followed by extrusion or co-extrusion onto conductor cores during cable production

Final product types

• Insulation for low/medium voltage electrical cables
• Outer sheathing for automotive and industrial wiring
• Special fire-retardant cables for public infrastructure

4. Flexible Foam Sheets for Sports and Footwear

This EVA is extensively used in foam sheet manufacturing serving athletic shoe midsoles, sports equipment padding, and protective mats. Its fine cell structure, energy absorption capacity, and consistent expansion rate during crosslinking meet stringent requirements for performance, durability, and shock diffusion in end-use sports and safety items.

Industry compliance standards

• EN ISO 20345:2011 (Safety footwear)
• REACH compliance for phthalate-free formulations
• OEKO-TEX Standard 100 for textile and footwear safety
• California Proposition 65 for finished product safety

Typical usage ratio

• 60-95% as the core polymer blend for foaming; actual content depends on required hardness, rebound, and density of the finished article

Downstream process integration

• Downstream processors directly blend the copolymer with blowing agents, colorants, and crosslinking peroxides, then extrude and expand in batch or continuous foam lines for sheeting and molding

Final product types

• Impact-absorbing midsoles for sports footwear
• Exercise, yoga, and athletic foam mats
• Protective spacers and cushioning pads in helmets and guards

5. Film Modification for Flexible Packaging

Flexible packaging converters value this material for its impact on tear resistance, seal initiation temperature, and puncture strength when blended into LDPE- or LLDPE-based films. Its inclusion supports downgauging targets and eliminates seal failure in multilayer pouch films and shrink wrap applications in food and consumer goods logistics.

Industry compliance standards

• FDA 21 CFR 177.1350 for resinous and polymeric coatings
• EU Regulation (EU) No 10/2011 for food contact plastics
• ISO 22000 food safety management in converters
• GMP Regulation (EC) No 2023/2006 for food contact material production

Typical usage ratio

• 3-18% blended with polyolefin matrices; adjusted to achieve target hot tack, clarity, and mechanical properties per customer and market requirements

Downstream process integration

• Converters dry-blend EVA with base resins prior to film extrusion via blown film or cast film lines, then optionally orient and laminate for downstream printing or pouch formation

Final product types

• Heat-sealable films for food packaging
• High clarity shrink wrap for consumer products
• Multilayer bag and pouch films for perishables

6. Injection Molding of Soft Industrial Components

Molders working in the appliance, automotive, and consumer electronics industries choose this copolymer for non-slip, impact-resistant parts requiring high flexibility and post-molding dimensional stability. Its ability to permit precise control over part softness and tactile feel facilitates the design of ergonomic and functional products.

Industry compliance standards

• ISO 19069 (Plastics - Polyolefin moulding materials)
• UL 94 for flammability rating of plastic materials
• RoHS 2011/65/EU for hazardous substance compliance
• ISO 9001 certified quality management in molding plants

Typical usage ratio

• Primary resin (up to 100%) for soft-core parts or 10-50% as a modifier in blends; the content depends on product thickness, flexibility, and tactile properties desired in the molded article

Downstream process integration

• Molders introduce the material directly to single- or multi-shot injection machines, often blending on-line with color masterbatches or fillers, then cool and demold under controlled temperature cycling

Final product types

• Soft-touch appliance buttons and grips
• Automotive pedal pads and flexible seals
• Consumer electronics protective covers and shock-absorbing panels