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Laminax Cuffed Foil Shielding
At Bridgeport Magnetics Group, we help electronics design engineers, EMC compliance specialists, and OEM manufacturers ensure superior EMI/RFI shielding performance, reliable signal integrity, and simplified integration in their products. Our Laminax shielding tapes deliver high-conductivity copper foil laminated with durable PET film in fully custom widths, lengths, and adhesive configurations.
Laminax™ Custom Copper Foil + PET Shielding Laminates
Since 1982, Bridgeport Magnetics has designed and manufactured premium toroidal transformers and custom magnetics for demanding applications. Our Laminax™ line of copper foil + PET film laminates was developed specifically to provide high-performance cuffed foil shielding and electrostatic shielding for toroidal and custom-wound transformers.
Laminax delivers custom-engineered shielding laminates in cuffed, enclosed, fringed, and specialized bonding configurations that integrate cleanly into automated winding processes. These laminates offer superior dielectric strength, consistent shielding performance, and thinner builds while eliminating the long-term reliability issues associated with traditional adhesive-backed tapes.
Laminax cuffed foil shielding is ideal for medical isolation transformers, audio power transformers, high-performance custom magnetics, power electronics, and precision test equipment where reliable electrostatic shielding, clean signal integrity, and efficient production are essential.
Every Laminax laminate is manufactured to your exact specifications in our Shelton, Connecticut facility, with full engineering support and fast U.S. lead times.
Why Choose Laminax™ Cuffed Foil Shielding
Traditional copper foil tapes and manual cuffing methods often create challenges in toroidal transformer production, including adhesive degradation over time, inconsistent edge coverage, added thickness, and difficulties with automated winding.
Laminax™ was specifically engineered to overcome these limitations. Our custom copper foil + PET film laminates deliver high-performance electrostatic shielding and grounding shields for toroidal and custom-wound transformers.
Laminax provides cuffed, enclosed, fringed, and specialized bonding constructions that offer complete edge insulation, thinner overall builds, and clean integration into automated winding equipment. These laminates maintain consistent dielectric performance and shielding effectiveness without the long-term reliability issues associated with pressure-sensitive adhesive tapes.
For engineers and OEMs building toroidal transformers, medical isolation transformers, audio transformers, and other custom magnetics, Laminax (cuffed foil shielding) offers clear advantages:
- Superior Edge Coverage & Consistency — Cuffed and fringed constructions reduce the risk of shorted turns and improve shielding reliability compared to hand-cuffed foil.
- Thinner, High-Performance Builds — Adhesive-free and specialized bonding options deliver equal or higher dielectric strength in a lower overall profile.
- Optimized for Automated Winding — Clean, residue-free surfaces eliminate gumming and buildup on winding equipment, improving throughput and yield.
- Long-Term Reliability — No adhesive degradation means stable electrostatic shielding performance throughout the life of the transformer.
- Custom Configurations for Exact Requirements — Multiple series and bonding methods allow precise matching to your winding geometry and voltage needs.
- Made in USA with Full Certifications — Manufactured in Shelton, Connecticut with full traceability, UL recognition, and recognized safety certifications.
Laminax™ Shielding Specifications
Laminax B-Series
Laminax BM-Series
Laminax C-Series
Laminax EB-Series
Laminax EC-Series
Laminax J-Series
Laminax custom shielding laminates shine in toroidal transformer electrostatic shielding and automated winding applications.
Medical Isolation Transformer Shielding
Low-leakage electrostatic shielding laminates for medical isolation transformers and patient-safe power systems.
Audio Power Transformer Shielding
Low-noise cuffed foil shielding for high-end audio and toroidal power transformers.
Precision Test & Measurement Transformer Shielding
Low-noise electrostatic shielding for test equipment, laboratory power supplies, and precision measurement transformers.
Power Electronics & Inverter Shielding
High-performance flat conductor shielding and electrostatic shielding for EV inverters, solar, and BESS systems.
Toroidal Transformer Electrostatic Shielding
Custom cuffed foil shielding and electrostatic shielding laminates for toroidal and custom-wound transformers.
Let's build yours to spec.
Custom cuffed foil shielding engineered and manufactured in the USA. Tell us your requirements and our engineers will help.
Frequently Asked Questions
What is cuffed foil shielding?
Cuffed foil shielding is a specialized copper foil + PET film laminate designed for electrostatic and grounding shields in transformers. The cuffed edges provide complete insulation, reduce the risk of shorted turns, and integrate cleanly into automated winding processes.
What is electrostatic shielding in transformers?
Electrostatic shielding uses a conductive layer (such as Laminax cuffed foil shielding) placed between primary and secondary windings to reduce capacitive coupling. This significantly lowers leakage current and EMI/RFI noise transferred to the secondary side.
How does Laminax compare to traditional copper foil tape?
Unlike standard pressure-sensitive adhesive copper foil tapes, Laminax offers specialized bonding configurations (including adhesive-free options), complete edge insulation, thinner builds, and clean integration into automated winding equipment without long-term adhesive degradation.
Is cuffed foil shielding better for automated winding?
Yes. Laminax cuffed foil shielding is specifically engineered for automated toroidal winding. The clean, residue-free surfaces prevent gumming and buildup on winding machines, improving throughput and yield.
What are the benefits of Laminax for medical isolation transformers?
Laminax provides low-leakage electrostatic shielding with consistent dielectric performance and long-term reliability – critical for medical isolation transformers that must meet strict IEC 60601 safety and leakage current requirements. Laminax cuffed foil shielding.
Can Laminax be used in audio power transformers?
Yes. Laminax delivers clean, low-noise electrostatic shielding that helps reduce hum and interference in high-end audio and toroidal power transformers, improving overall signal integrity.
What makes Laminax different from other transformer shielding laminates?
Laminax offers multiple specialized series with cuffed, enclosed, and fringed constructions. It is optimized for automated winding, provides superior edge coverage, and is manufactured in the USA with full UL recognition and traceability.
Where is Laminax manufactured?
Laminax (cuffed foil shielding) is manufactured in our Shelton, Connecticut facility in the USA. Every laminate is produced to exact customer specifications with full engineering support and fast domestic lead times.
What configurations are available with Laminax?
Laminax is available in cuffed, enclosed, fringed, jacketed, and multi-conductor configurations. These can be fully customized in width, length, and bonding method to match your specific winding geometry and voltage requirements.
Does Laminax help with EMI/RFI compliance?
Yes. By providing effective electrostatic shielding between windings, Laminax helps reduce conducted and radiated EMI/RFI, supporting electromagnetic compatibility (EMC) compliance in medical, industrial, audio, and power electronics applications. Laminax is cuffed foil shielding.
