Silicone sleeves are specialized, high-performance dielectric covers designed to fit tightly over ground metal rollers in corona treatment systems. They play a critical role in treating plastic films, foils, paper, and non-woven substrates by providing uniform electrical insulation, preventing dielectric breakdown, and ensuring smooth, consistent surface tension modification for improved ink, adhesive, and coating adhesion.
Applications & Suitable Substrates
-
Blown Film Extrusion: Ideal for inline corona treating of LDPE, LLDPE, HDPE, PP, and stretch film lines.
-
Flexible Packaging & Lamination: Ensures high dyne levels on PET, BOPP, and aluminum foil before solvent-based or solvent-less lamination.
-
Printing Machinery: Enhances ink anchorage on non-porous synthetic substrates running on flexographic and rotogravure presses.
-
Specialized Materials: Suitable for treating metallized films, coated paper, medical-grade barrier packaging, and non-woven fabrics.
Silicone Sleeves for Corona Treater
-
Standard Sizes Available
-
Physical Properties
-
Features
-
Other Features
| Sr. No. | Roller Diameter (Inches) | Roller Diameter (mm) | Sleeve Inner Diameter (ID) | Wall Thickness Options (mm) | Available Roll Lengths |
| 1 | 1.5” | 38 mm | 34 mm | 2.0, 2.5, 3.0, 4.0 | 10 Meters / Custom Cut |
| 2 | 2.0” | 48 to 50 mm | 47 mm | 2.0, 2.5, 3.0, 4.0 | 10 Meters / Custom Cut |
| 3 | 2.5” | 63 to 65 mm | 58 mm | 2.0, 2.5, 3.0, 4.0 | 10 Meters / Custom Cut |
| 4 | 3.0” | 73 to 78 mm | 69 mm | 2.0, 2.5, 3.0, 4.0 | 10 Meters / Custom Cut |
| 5 | 3.5” | 88 to 90 mm | 82 mm | 2.0, 2.5, 3.0, 4.0 | 10 Meters / Custom Cut |
| 6 | 4.0” | 98 to 102 mm | 93 mm | 2.0, 2.5, 3.0, 4.0 | 10 Meters / Custom Cut |
| 7 | 4.5” | 115 to 118 mm | 107 mm | 2.0, 2.5, 3.0, 4.0 | 10 Meters / Custom Cut |
| 8 | 5.0” | 124 to 127 mm | 115 mm | 2.0, 2.5, 3.0, 4.0 | 10 Meters / Custom Cut |
| 9 | 6.0” | 148 to 152 mm | 140 mm | 2.0, 2.5, 3.0 | 10 Meters / Custom Cut |
| 10 | 8.0” | 200 mm | 190 mm | 2.0, 2.5, 3.0 | 10 Meters / Custom Cut |
-
Hardness: 60 to 65 ± 5 Shore A
-
Working Temperature Range: -70°C to +230°C (continuous high-heat endurance)
-
Dielectric Strength: 18 to 22 kV/mm
-
Tensile Strength: Approx. 9 MPa
-
Elongation at Break: 350%
-
Tear Strength: 20 N/mm
-
Density / Specific Gravity: 1.15 g/cm³
-
Tracking Resistance: 3.5 kV for 10–30 minutes
-
Arc Resistance: 80 to 100 seconds
-
Volume Resistivity: 10¹⁵ – 10¹⁶ Ω·cm
-
High Dielectric Insulation: Engineered to handle continuous high-voltage discharge without electrical breakdown, ensuring even surface tensioning.
-
Exceptional Thermal Resistance: Retains elasticity, mechanical integrity, and insulation performance under elevated processing temperatures.
-
Uniform & Straight Extrusion: Precision 180-degree straight construction with close dimensional tolerances ensures a smooth, gap-free fit over dielectric rollers.
-
Ozone & Corona Resistance: Highly resistant to degradation from ozone gas and high-frequency discharge generated during the corona process.
-
Non-Stick Surface Finish: Smooth inner and outer diameters prevent film tracking issues and reduce resin or contamination buildup.
-
Easy Installation: Flexible design allows simple mounting and slip-on replacement directly over existing treaters.
-
Universal Compatibility: Fits all major standard corona treaters used in flexible packaging, film blowing, printing, and lamination machinery.
-
Color Customization: Standard availability in high-visibility Orange; optional colors include Red Oxide, Sky Blue, and custom shades for bulk production.
-
Chemical & Solvent Resistance: Resists degradation from inks, laminating adhesives, solvents, and industrial washing agents.