Explore our laboratory-certified, precision-slit electrical insulation and high-tack bonding solutions supplied globally to OEMs, Tier-1 system integrators, and die-cutting fabricators.
In high-density electronics, autonomous mobility, high-power telecom infrastructure, and precision medical monitoring, electromagnetic interference (EMI) and radio frequency interference (RFI) present significant threats to signal integrity. EMI self-adhesive copper foil tape serves as an essential, high-performance solution combining high-purity copper backing with advanced pressure-sensitive adhesives (PSA).
By harnessing the low electrical resistivity of electrolytic copper (Cu ≥ 99.95%) or rolled annealed copper foil, our tapes achieve superior magnetic and electrostatic reflection and absorption, providing reliable shielding attenuation exceeding 80 dB to 100 dB across critical RF spectra.
Available in single-sided conductive (conductive copper foil with non-conductive insulation acrylic) and double-sided conductive (conductive copper foil infused with dispersed nickel or silver-plated copper microspheres in the adhesive) to accommodate distinct grounding paradigms.
Beyond electromagnetic suppression, copper's superior thermal conductivity (~390 W/m·K) enables our tapes to function as planar heat spreaders while rapidly draining dangerous electrostatic charges (ESD) away from sensitive microprocessors, sensors, and optical interfaces.
The convergence of 5G/6G communication systems, artificial intelligence acceleration hardware, electric vehicle (EV) battery management modules, and renewable power inverters has led to surging demand for precision electromagnetic shielding solutions worldwide.
Hyperscale AI accelerators, high-speed optical transceivers, and switch fabrics operate under high thermal stress and dense RF environments, necessitating high-tack conductive copper tapes for enclosure seams, cable shielding, and backplane grounding.
Battery Management Systems (BMS), high-voltage power distribution units (PDU), onboard DC-DC chargers, and ADAS Radar/LiDAR systems require stable, heat-resistant copper foil tapes to mitigate parasitic oscillations and prevent crosstalk between power and control circuitry.
High-gain bioelectric amplifiers, diagnostic ultrasound arrays, and MRI telemetry equipment demand zero-distortion signal pathways. Conductive copper foil ensures zero stray RF leakage from internal switching converters and external ambient noise.
Lightweighting mandates drive the replacement of heavy cast-aluminum shielding enclosures with thin composite structures lined with rolled annealed copper foil tapes, delivering critical weight reductions while meeting MIL-STD-461 EMC testing thresholds.
Zhuhai Huayuan Electronics utilizes high-precision reverse-roll coater lines and automated thickness gauging to ensure micro-level consistency across foil caliper, adhesive coat weight, and conductive particle distribution.
| Property Parameter | Single Conductive Grade (HY-CU-S) | Double Conductive Grade (HY-CU-D) | Thick Embossed Grade (HY-CU-EM) | Test Standard |
|---|---|---|---|---|
| Base Copper Backing | 18 μm – 50 μm (Purity ≥99.95%) | 18 μm – 70 μm (Purity ≥99.95%) | 35 μm – 100 μm Embossed ED/RA | ASTM B152 |
| Adhesive Matrix | Non-conductive Acrylic Polymer | Nickel/Ag Coated Conductive Acrylic | Conductive Solvent Acrylic | Proprietary Huayuan Tech |
| Total Caliper Thickness | 0.045 mm – 0.085 mm (±0.003) | 0.050 mm – 0.100 mm (±0.003) | 0.075 mm – 0.135 mm (±0.005) | ASTM D3652 |
| Shielding Attenuation | 70 dB – 95 dB (30MHz to 10GHz) | 85 dB – 110 dB (10MHz to 18GHz) | 90 dB – 115 dB (10MHz to 20GHz) | ASTM D4935 / MIL-STD-285 |
| Through-Resistance (Z-Axis) | Insulative (>1010 Ω) | < 0.05 Ω / in2 | < 0.01 Ω / in2 (Embossed Tooth) | MIL-STD-202 Method 307 |
| Peel Adhesion (to Steel) | ≥ 12.0 N / 25mm | ≥ 10.5 N / 25mm | ≥ 13.5 N / 25mm | PSTC-101 / ASTM D3330 |
| Thermal Endurance | -20°C to +120°C (Continuous) | -25°C to +130°C (Continuous) | -40°C to +155°C (Short peak 180°C) | UL 510 Thermal Profiling |
| Holding Shear Power | > 24 Hours (at 23°C / 1kg) | > 24 Hours (at 23°C / 1kg) | > 48 Hours (at 80°C / 1kg) | PSTC-107 |
ED copper offers high tensile modulus and optimal planar surface flatness for rigid PCB backplanes and stained-glass crafting, whereas RA copper provides fatigue ductility, enabling repeated 180° folding across dynamic hinges and flexible flat cables (FFC).
Our proprietary dispersion system achieves uniform distribution of nickel-plated and silver-coated spherical particles. Under mild assembly pressure, these spheres puncture through surface oxidation to establish low-resistance ohmic contact pathways across the adhesive matrix.
All copper foils undergo chemical surface passivation treatments that protect against copper green patina, galvanic tarnishing, and corrosion under humid operating environments without degrading electrical contact conductivity or solderability.
Procuring specialized functional tapes for mission-critical assemblies requires uncompromising supply chain reliability, traceable batch documentation, and strict international compliance.
Huayuan Electronics operates strictly under ISO 9001 quality management procedures established since 2013. Raw materials, online infrared coat-weight monitoring, tension-controlled rewinding, and final optical inspection are registered into unalterable batch production logs.
Every grade of our EMI copper foil tape complies strictly with EU RoHS Directive (EU) 2015/863, REACH Regulation (EC No 1907/2006) SVHC candidate lists, and Halogen-Free requirements (IEC 61249-2-21). Official third-party testing reports are renewed annually by SGS.
With factories in Zhuhai (Nanping Science & Tech Park) and Zhongshan (Tanzhou), alongside Huayuan International Technology (Hong Kong) Co., Ltd. established in 2014, overseas clients benefit from fast currency settlements, bonded warehouse access, and rapid multi-modal shipping through HK, Shenzhen, and Guangzhou ports.
Our EMI self-adhesive copper foil tapes are custom-converted to address distinct physical and electrical constraints across major industrial applications worldwide.
Applied between primary and secondary windings in high-frequency flyback transformers and EV switch-mode power units. Copper foil blocks capacitively-coupled common-mode switching noise, draining parasitic spikes directly to ground before they enter AC mains.
Precision kiss-cut die-cut copper components with conductive pressure-sensitive adhesive ground display OLED panels and camera sensors directly to magnesium-aluminum chassis ribs, shielding internal processors from RF radiation emitted by 5G antenna arrays.
Used to seal copper panel seams, feedthrough penetration panels, and doors in medical imaging suites and EMC test facilities. Prevents minute electromagnetic leakage from corrupting diagnostic signal readings or compromising compliance testing.
Eliminates mains 50/60Hz electromagnetic hum, electrostatic buzz, and ambient lighting interference in electric guitars and high-gain audio electronics by creating a continuous Faraday cage around pickup coils and potentiometers.
Supplied with split-back easy-peel liners, extended pull-tabs, and custom roll wound indexing for pick-and-place automated assembly robots, reducing labor handling cycles across contract electronic manufacturing facilities.
Our soft-temper electrolytic copper foil tapes bond smoothly to stained glass piece contours, accepting standard 60/40 lead-tin and lead-free solders smoothly. They also serve as an eco-friendly slug and snail barrier for agricultural beds.
As operating frequencies advance into high millimeter-wave (mmWave) bands and electronic packages shrink to sub-millimeter profiles, Huayuan's adhesive laboratories continue to pioneer next-generation shielding materials.
Developing ultra-thin rolled annealed foils to accommodate micro-wearables, foldable display hinges, and high-density semiconductor SIP packaging without adding parasitic bulk or micro-crack risks.
Synthesizing multi-walled carbon nanotubes (MWCNT) and graphene nanoplatelets within conductive adhesives to maintain superior electrical contact while mitigating galvanic oxidation across harsh automotive and marine environments.
Optimizing surface skin-depth performance and magnetic permeability for upcoming 6G telecommunications and automotive 77GHz autonomous radar units, delivering broadband attenuation up to 100GHz.
Key technical, testing, and supply chain insights for procurement officers, component engineers, and production managers.
Single-conductive copper tape features conductive copper foil coated with an electrically non-conductive acrylic adhesive. Electrical conduction occurs along the backing foil surface only. Double-conductive copper tape utilizes conductive particles (nickel or silver-plated spheres) blended into the adhesive matrix, establishing vertical (Z-axis) conductivity directly through the adhesive to the mounting substrate.
Yes. Our pure electrolytic and rolled annealed copper backings are fully solderable using standard lead-free (SAC305, Sn-Cu) or tin-lead solders. The copper backing withstands soldering temperatures up to 260°C for typical wave or hand soldering cycles without blistering or delaminating from the adhesive layer.
As a factory manufacturer equipped with high-precision imported slitters, we supply slit widths from 3mm up to 1200mm jumbo master rolls. Standard roll lengths are 20m, 33m, and 50m, with custom lengths up to 500m for automated rotary die-cut converting lines.
We perform rigorous temperature-humidity cycling tests (85°C / 85% RH for 1000 hours) to verify that contact resistance does not exceed 0.05 Ω/in². Furthermore, the copper foil surface is chemically passivated to prevent atmospheric oxidation during storage and deployment.
Yes. We provide sample rolls and die-cut prototype sheets for engineering qualification. Let us know your substrate material, operating temperature range, shielding requirements, and preferred roll width, and our application engineers will ship matched samples within 24 hours.
For standard slit widths, our typical production lead time is 3 to 7 working days. Custom laminations or specialized die-cut geometries require approximately 7 to 12 working days. We support low trial MOQs for new qualification projects, scaling to containerized volumes for global distribution.
Complete your sourcing portfolio with our heavy-duty industrial tapes engineered for structural fastening, thermal endurance, and surface protection across demanding environments.
Accelerate your electromagnetic compliance testing and streamline your supply chain with factory-direct pricing, custom slit widths, and ISO 9001 certified batch consistency. Free sample testing kits available upon request.
