In modern cable manufacturing, protecting sensitive conductors and optical fibers from electromagnetic interference (EMI) and moisture ingress is critical for long-term network reliability. Copolymer Coated Aluminium Tape (also known as EAA Coated Aluminum Tape or Copolymer Aluminium Tape) from RLB delivers a high-performance, dual-function solution that combines excellent electrical shielding with superior waterproofing and adhesion properties.
This composite material consists of a high-quality aluminum tape coated on one or both sides with an ethylene acrylic acid (EAA) copolymer layer. It has become an essential component in communication cables, coaxial cables, fiber optic cables, and power cables where both EMI protection and environmental sealing are required.
High-quality copolymer coated aluminium tape rolls ready for cable manufacturing — available in various widths and core diameters.
What is Copolymer Coated Aluminium Tape?
Copolymer Coated Aluminium Tape (also known as EAA Coated Aluminum Tape) is a semi-flexible composite shielding material consisting of a high-purity aluminum foil base coated on one or both sides with an ethylene acrylic acid (EAA) copolymer layer.
The aluminum layer delivers outstanding electrical conductivity for effective EMI/RFI shielding, while the EAA copolymer coating ensures excellent heat-seal adhesion to polyethylene cable sheaths (LLDPE, MDPE, HDPE) and forms a robust, long-lasting moisture barrier. This integrated design eliminates the need for separate shielding and waterproofing layers in many cable constructions, simplifying production and improving reliability.
Primary Applications in Cable Manufacturing
Copolymer coated aluminum tape is widely used across multiple cable types:
- Communication and Data Cables — Provides effective EMI shielding and moisture protection in copper pair, coaxial, and data transmission cables.
- Fiber Optic Cables — Serves as a metallic moisture barrier and shielding layer in underground, aerial, and submarine optical cables.
- Power Cables — Used as composite shielding and waterproofing in medium- and high-voltage power cables, especially in harsh or buried environments.
- Specialty Cables — Applied in cables requiring combined electrical shielding and environmental protection, such as those used in renewable energy, industrial, and infrastructure projects.
Its ability to bond reliably with common cable sheath materials (LLDPE, MDPE, HDPE) makes it particularly valuable for high-performance, long-life cable constructions.
Key Advantages
- Excellent EMI/RFI Shielding — High-conductivity aluminum layer provides effective electromagnetic interference protection.
- Superior Moisture Barrier — EAA copolymer creates a strong, sealed barrier against water, flooding compounds, and humidity, significantly reducing corrosion and signal degradation risks.
- Strong Adhesion & Sealability — High peel strength (≥6.13 N/cm) and heat-seal performance (≥17.5 N/cm) ensure reliable bonding during extrusion and prevent delamination throughout the cable’s service life.
- Good Mechanical Properties — Tensile strength ≥65 MPa and elongation ≥15% provide durability during high-speed processing, handling, and installation.
- Corrosion & Environmental Resistance — Grade 7 corrosion resistance, proven performance after prolonged exposure to water and filling compounds.
- Flexible Processing — Wide range of widths (typically 12–1070 mm) and core diameters; available in single-sided or double-sided configurations and clear or blue coating colors.
Technical Specifications
| Parameter | Typical Value | Test Condition / Standard |
|---|
| Aluminum Thickness | 0.08–0.50 mm | Base tape |
| EAA Coating Thickness | 0.03–0.10 mm | One or both sides |
| Tensile Strength | ≥65 MPa | ISO 527 |
| Elongation at Break | ≥15% | ISO 527 |
| Peel Strength | ≥6.13 N/cm | Internal test |
| Heat Seal Strength | ≥17.5 N/cm | Internal test |
| Corrosion Resistance | Grade 7 | 168 hours at 68°C in filler/flood |
| Dielectric Strength | No breakdown at DC 1 kV | Two-side coated version |
Custom widths, thicknesses, coating colors (clear or blue), and single/double-sided configurations are available to meet specific project requirements.
Primary Applications in Cable Manufacturing
Copolymer Coated Aluminium Tape is widely used across high-reliability cable types:
- Communication & Data Cables — Effective EMI shielding and moisture protection in copper pair, coaxial, and data transmission cables.
- Fiber Optic Cables — Metallic moisture barrier and shielding layer for underground, aerial, and submarine optical cables.
- Power Cables — Composite shielding and waterproofing in medium- and high-voltage power cables, especially in harsh or buried environments.
- Specialty Cables — Renewable energy, industrial, and infrastructure projects requiring combined electrical shielding and environmental protection.
Its reliable bonding with common sheath materials makes it particularly valuable for long-life, high-performance cable constructions.
Manufacturing Standards & Quality
RLB Copolymer Coated Aluminium Tape is manufactured under strict quality control to ensure consistent coating thickness, adhesion performance, and cleanliness — critical for high-speed cable production lines.
The product complies with the Chinese national standard YD/T 723-2007 for copolymer coated aluminum tape used in communication cables and is suitable for cables produced under major international standards.
Manufacturing Process Highlights:
- EAA copolymer film is produced via mono-extrusion.
- Film is heat-laminated onto high-purity aluminum foil in a controlled tunnel oven for strong, uniform bonding.
- Final slitting and packaging according to customer specifications.
Packaging & Supply
Supplied in rolls with inner core diameters of 76 mm, 102 mm, 150 mm, 205 mm, or 406 mm (steel, aluminum, or plastic cores). Maximum outer diameter up to 1200 mm. Rolls are securely packed in sturdy wooden cases for safe international transportation and storage.
Why Cable Manufacturers Choose RLB Copolymer Coated Aluminium Tape
When integrated with RLB’s complete cable manufacturing solutions — including high-speed stranding equipment, extrusion lines, and complementary shielding materials — this tape delivers a reliable, cost-effective component that enhances both electrical performance and environmental durability of finished cables.
Its combination of shielding effectiveness, strong adhesion, and proven moisture resistance makes it the preferred choice for manufacturers producing high-reliability communication, fiber optic, and power cables for demanding global markets.
Inquiry Now to discuss technical specifications, custom configurations, or complete shielding and waterproofing solutions for your cable production lines. Our team offers professional consultation and reliable long-term partnership.
Copolymer Coated Aluminium Tape – Reliable Cable Material
Copolymer Coated Aluminium Tape provides effective EMI shielding and robust moisture barrier for fiber optic, communication, and power cables. Strong adhesion to LLDPE/HDPE sheaths, high peel strength, and excellent corrosion resistance. Available in custom widths and single/double-sided options. Inquiry Now for technical details.
Product SKU:
Copolymer Coated Aluminium Tape
Product Brand:
RLB Machinery
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Product Price:
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