SK Functional EVA Evatane 28-25
Evatane 28-25 is a premium, random ethylene–vinyl acetate copolymer (EVA) from SK Functional Polymer (formerly Arkema Evatane), featuring 28% vinyl acetate and a melt flow rate of ~25 g/10 min. Produced by high-pressure radical polymerization and stabilized with antioxidants, this grade delivers a unique combination of softness, flexibility, polarity, and medium-high fluidity. It is widely recognized as a top choice for hot melt adhesive (HMA) formulations, HFFR (halogen-free flame-retardant) cable compounds, masterbatches, and cast/film extrusion. Evatane 28-25 offers high cohesive strength with fillers, excellent compatibility with tackifying resins and waxes, and achieves 800–1000% elongation at break, tensile strength ~14 MPa, and Shore A hardness ~75. Supplied as unfilled, ready-to-use granules, it is trusted for demanding adhesive, cable, and film applications across India.
Functional Features & Technical Authority
- 28%-VA-Soft: Delivers flexibility, softness, and high polarity for superior compounding and adhesion.
- MFI-25-Fluid: Medium-high melt flow for efficient HMA compounding and fast film extrusion.
- Cohesive-Strong: Maintains mechanical integrity and high cohesive strength in filled systems and masterbatches.
- Tackifier-Friendly: Compatible with most tackifying resins and waxes for robust hot melt blends.
- Antioxidant-Stabilized: Built-in antioxidant package for thermal stability in processing and long-term use.
- Unfilled & Pure: Supplied as unfilled granules for direct use or custom compounding.
- Processable: Suitable for a wide range of equipment—adhesive kettles, twin-screw extruders, cast film lines.
- Regulatory Compliance: Meets global standards for adhesives, cables, and film applications; technical documentation and SDS available.
Applications
Hot Melt Adhesives
Evatane 28-25 is engineered as an efficient, fast-processing base resin for hot melt adhesives, including packaging HMA (case/carton sealing, edge banding), product assembly adhesives (filters, woodwork, bookbinding), footwear and leather adhesives, and PSA/technical HMA. Its high VA content and MFI 25 ensure easy pumping, coating, and robust, tunable adhesive formulations with tackifiers and waxes. Antioxidant stabilization supports reliable processing and shelf life.
Key Bullets:
- Packaging HMA (case, carton, edge banding)
- Product assembly adhesives
- Footwear/leather adhesives
- PSA/technical HMA (labels, tapes)
HFFR Cable Compounds & Masterbatches
Evatane 28-25 delivers high cohesive strength with mineral, flame-retardant, or sound-damping fillers and is a reference EVA for HFFR sheathing/insulation, masterbatches, and sound-damping compounds. Its polarity ensures strong interaction with fillers (ATH/MDH), while antioxidant stabilization resists thermal aging in cable and masterbatch applications.
Key Bullets:
- HFFR cable compounds (sheathing, insulation)
- Filler-rich masterbatches
- Sound-damping compounds
Film & Cast Film Extrusion
Well-suited for cast film and co-extruded film applications, Evatane 28-25’s high VA and MFI 25 enable thin-gauge cast films, tie/sealing layers, and specialty films requiring flexibility and adhesion to other polymers. Its processability supports high-speed film lines and technical film requirements.
Key Bullets:
- Cast film for laminates/packaging
- Tie-layer/sealing layer in co-extruded films
- Specialty/technical films
PV & Specialty Context
While Evatane 28-25 base grade is not the dedicated PV encapsulant, SK offers a related 28‑25 PV variant for solar modules. The base grade is primarily for HMA, HFFR, and film, but “solar EVA/PV sheet” keywords are included for discoverability.
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FAQs
Frequently Asked Questions
What exactly is Evatane 28-25 and who makes it now?
What are the main applications of SK Functional EVA Evatane 28-25?
How does Evatane 28-25 compare to other 28% VA, 25 MFI HMA EVAs (like LG EA28025 or Lotte VA600)?
How is Evatane 28-25 typically formulated in hot melt adhesives?
Why is Evatane 28-25 popular for HFFR cable compounds and masterbatches?
What are the typical specifications and quality controls for Evatane 28-25?
Why does transparent sourcing of Evatane 28-25 matter for Indian HMA, cable and film manufacturers?
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