Formosa Plastics TAISOX® 7470M is a high-VA (26%) EVA resin featuring 800% elongation at break and a -70°C brittleness temperature, ideal for footwear foaming, hot melt adhesives, and photovoltaic films.
| Manufacturer | FPC |
|---|---|
| Density | 0.948 g/cm³ |
| MFR | 7.5 g/10min |
| Tensile Strength at Yield | 2.94 MPa |
| Tensile Strength at Break | 13.7 MPa |
Note: See the product description for additional technical specifications
Formosa Plastics TAISOX® 7470M is a premium ethylene-vinyl acetate (EVA) copolymer resin manufactured by Formosa Plastics Corporation. Physically, this grade presents as clean, colorless, transparent cylindrical pellets characterized by exceptional flexibility and high optical clarity. As a flagship high vinyl acetate (VA) content grade within the Formosa TAISOX® EVA family—boasting a VA content of 26.0 wt%—7470M holds a prominent position across the global foaming, footwear, and adhesive industries.
Combining superior elasticity, low melting points, and excellent compatibility, TAISOX® 7470M is widely utilized in high-grade foamed midsoles, EVA films, hot melt adhesive (HMA) formulations, and solar cell encapsulation materials. It not only provides finished goods with outstanding shock absorption, cushioning, and tactile comfort, but also delivers remarkable processing stability and yield rates during injection molding, extrusion, and foaming operations, making it a specified raw material for major global footwear and industrial brands.
| Physical Properties | Test Value | Test Unit | Test Standard |
| Density | 0.948 | g/cm3 | ASTM D1505 |
| Melt Flow Rate (MFR)(190 °C, 2.16 kg) | 7.5 | g/10min | ASTM D1238 |
| Vinyl Acetate (VA) Content | 26 | wt% | — |
| Shore Hardness A | 82 | — | ASTM D2240 |
| Shore Hardness D | 32 | — | ASTM D2240 |
| Mechanical Properties | Test Value | Test Unit | Test Standard |
| Tensile Strength, Yield | 2.94 | MPa | ASTM D638 |
| Tensile Strength, Break | 13.7 | MPa | ASTM D638 |
| Tensile Elongation, Break | 800 | % | ASTM D638 |
| Flexural Modulus | 6.86 | MPa | ASTM D790 |
| Thermal Properties | Test Value | Test Unit | Test Standard |
| Brittleness Temperature | -70 | °C | — |
| Vicat Softening Point | 48 | °C | — |
Disclaimer: The technical data sheet (TDS) of Formosa Plastics TAISOX® 7470M EVA material from Formosa Plastics Corporation, if there are differences, please refer to the official website of Formosa Plastics Corporation.
High Vinyl Acetate Content (26% VA): The elevated VA ratio imparts rubber-like flexibility, high resilience, and exceptional optical clarity while effectively reducing crystallinity.
Superior Low-Temperature Toughness: Features an ultra-low brittleness temperature of -70.0 °C, ensuring end products maintain crack resistance and toughness even in freezing environments.
High Elongation at Break (800%): Exhibits outstanding tensile deformation capability, preventing tearing under severe flexing or high-impact loads.
Excellent Compatibility and Rheological Processability: Favorable melt flowability (7.5 g/10min) allows seamless blending with resins, tackifiers, and waxes, enhancing processing efficiency in hot melt adhesives and foaming compounds.
Low Softening Point & Thermal Sensitivity: Features a Vicat softening point of 48 °C, enabling rapid melting, bonding, and fast-curing at lower temperatures.
Athletic Footwear & Foamed Midsoles: Functions as a core base resin for premium athletic and casual shoe foamed midsoles, providing lightweight structure, excellent rebound energy, and comfortable underfoot cushioning.
Hot Melt Adhesives (HMA): Serves as a primary polymer in hot melt adhesive formulations, extensively applied in carton sealing, woodworking edge-banding, bookbinding, and textile bonding.
Extruded Films & Encapsulation Sheet: Utilized in industrial packaging films, specialty laminated barriers, and photovoltaic EVA encapsulation films due to its optical clarity and weatherability.
Consumer Goods & Flexible Toys: Applied in manufacturing high-toughness soft toys, anti-slip mats, floor pads, yoga mats, and various foamed sheets requiring high shock-absorbing performance.
Wire & Cable Compound Modification: Acts as a carrier resin in halogen-free flame-retardant (HFFR) cable compounds, improving filler capacity for inorganic flame retardants such as ATH/MDH.
Q1: Does Formosa Plastics TAISOX® 7470M EVA require pre-drying prior to processing?
A: Although EVA resin inherently exhibits low moisture absorption compared to hygroscopic polymers like nylon, 7470M is a highly flexible grade with 26% VA content, making its pellet surfaces prone to absorbing trace atmospheric moisture during shipping or storage in humid conditions. To prevent moisture bubbles, silver streaks, or altered expansion ratios during foaming and extrusion, pre-drying with a dehumidifying dryer at 50–55 °C for 2–4 hours is recommended (ensure drying temperatures do not exceed its Vicat softening point of 48–50 °C to prevent pellet agglomeration).
Q2: How does 26% VA TAISOX® 7470M compare to lower VA EVA grades (e.g., 18% VA)?
A: Increasing VA content reduces overall polymer crystallinity. Compared to 18% VA EVA, 7470M (26% VA) offers higher transparency, greater flexibility, lower melting/softening points, and enhanced adhesion to polar substrates; concurrently, its tensile modulus and hardness are lower (Shore A hardness of 82), making it preferable for high-rebound foaming, hot melt adhesives, and clear films.
Q3: Does this grade comply with international regulatory and food contact standards (such as RoHS, REACH, FDA)?
A: Yes. Formosa TAISOX® 7470M is produced under ISO 9001 and ISO 14001 certified manufacturing facilities, fully complying with EU RoHS directives and REACH SVHC restrictions. For food contact applications, specific prime compliant lots meet US FDA and relevant European food contact regulations. Customers can request official Certificates of Analysis (COA), Food Contact Declarations, or RoHS statements from our sales team during bulk procurement.
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