Why Choose Our Copper Foil Roll？
Copper Foil Roll Manufacturer for Electronic & EMI Applications
- With over 10 years of experience and a team of professional engineers.
- Support for prototyping and bespoke product development.
- Equipped with infrared detection and tracking devices to achieve stringent tolerance control.
- Thickness, width, surface finish, and copper purity can all be customised.
- All copper foil rolls are certified to ISO 9001:2008, ISO 14001, IATF 16949, and ISO 45001.
- Rapid delivery of projects ranging from small to large-scale batches
Your Reliable Copper Foil Roll Supplier
As a professional and reliable supplier of copper foil rolls, GALLOP INNOTEK provides bespoke solutions for diverse industries, including consumer electronics, communications, energy, automotive, and industrial automation. Copper foil rolls combine electrical conductivity, electromagnetic shielding, and thermal dissipation properties, making them the best choice for enhancing equipment reliability and service life.
GALLOP INNOTEK has extensive experience and a specialised team, bringing end-to-end services from product selection to development. All manufactured products undergo over 30 tests within our in-house testing laboratory. Furthermore, with over 22 production lines, we maintain a stable and rapid supply for large volumes.
Features of Copper Foil Roll
High conductivity and extremely low resistance form a persistently stable conductive layer, effectively absorbing and reflecting interfering electromagnetic waves.
Can be integrated with a variety of materials, suitable for functional conductive layers in composite structures.
Various types are available for selection. Different surface finishes are also offered. Thickness, width, and coil length can be customised.
Ultra-thin copper foil coils are available for equipment requiring compact, high-density designs and lightweight construction.
Designed for Automated & Roll-to-Roll Manufacturing
Coil lengths may exceed one kilometre, making it suitable for continuous production. This minimises downtime for material changes, thereby helping you to achieve satisfactory efficiency. It also facilitates efficient material utilisation, reducing waste and yielding higher output. This proves highly cost-effective for large-scale processing.
Lower Total Cost for Mass Production
On the one hand, the initial cost of copper foil rolls is lower than that of copper foil sheets, requiring a smaller budget. On the other hand, copper foil rolls offer higher material utilisation, further reducing procurement costs. Moreover, we provide bespoke services and one-to-one support from model selection through to pre-installation, minimising significant losses caused by incorrect selection or operational errors.
Applications of Copper Foil Roll
Electromagnetic interference shielding layers for mobile phones, computers, cameras, and other devices to enhance reliability
It can be processed into electromagnetic shielding tape for use in electronic enclosure grounding, conductive shielding layers, etc.
Mass production for electromagnetic slip rings and energy storage systems, helping with continuous operation. It can also reduce energy consumption.
Benefiting from their lightweight construction and resistance to bending, they can withstand the flexing design of flexible printed circuit boards.
Using copper foil rolls in industrial electrical and automation equipment prevents downtime and failure risks, enhancing industrial safety and production efficiency.
Copper foil rolls are utilised in vehicle electronics, control units, and powertrain systems to improve signal accuracy and achieve more stable operation
Copper foil rolls effectively reflect electromagnetic interference in communications and avionics equipment, preventing signal distortion.
Copper Foil Roll Specifications
| Specification | Available Options / Range |
| Copper Purity | >99.5% |
| Manufacturing Type | ED / RA |
| Thickness | 3–35 μm |
| Width | Up to 620–1300 mm |
| Coil Length | Customizable; >1 km available |
| Electrical Conductivity | ≥90% IACS; up to ≥98.3% IACS |
| Surface Roughness | Ra ≤0.3–0.43 μm; Rz ≤3.0–3.5 μm |
| Surface Finish | Shiny / Matte / Double Shiny / Surface Treated |
| Core ID | 76 mm / 152 mm / Custom |
| Material Compatibility | Adhesives / PI / PET / Composite Materials |
Their manufacturing processes differ: ED copper foil coils are produced via electrochemical deposition, whereas RA copper foil coils are fabricated through rolling and annealing processes. They also have differences in surface roughness, thickness, and cost.
Both are roll materials and their applications are different. Copper foil rolls can measure up to several thousand metres in length and are used for continuous processing in industrial settings. Copper foil tape, conversely, constitutes a compact material frequently utilised as a temporary solution in maintenance tasks and DIY projects. For industrial-grade electromagnetic interference shielding and automated production, copper foil rolls are the better solution.
Yes. Copper foil rolls feature continuous lengths and uniform thickness, making them highly suitable for automated industrial production lines and enhancing production efficiency. Moreover, they consistently offer the same quality in different batches while minimising material wastage.
Copper foil roll has good electrical conductivity, which helps block and reduce electromagnetic interference. In general, higher conductivity means better electrical conductivity of the copper foil, which is more beneficial for EMI shielding. However, the actual shielding performance also depends on the foil thickness, structure, and how it is used. Therefore, if you mainly use it for EMI shielding, we recommend considering the foil thickness and specific application along with conductivity when choosing the right copper foil roll.
Surface roughness affects how well the copper foil bonds with adhesives or other materials. If your copper foil roll needs to be bonded to other materials, you need to choose a surface condition that matches them. You can ask us about the surface roughness and surface treatment, select the right copper foil based on your bonding or lamination process.
Thickness tolerance mainly depends on the processing accuracy and the requirements of the final product. If your product requires high dimensional consistency, you need to choose a tighter and more stable thickness tolerance. This can help reduce dimensional variations during processing.
If your copper foil needs to be bent, stamped, or formed to fit curved surfaces, we recommend choosing a softer Temper with good ductility. Softer copper foil is easier to bend and form and is less likely to crack during processing.
Yes. In some electronic products, copper foil roll can use copper’s good electrical and thermal conductivity to provide both EMI shielding and heat spreading.
What is the Copper Foil Roll？
For ease of transportation and subsequent processing, copper foil is typically formed into continuous coils, sheets, cut pieces, and other formats. Thinner copper foil is typically manufactured as copper foil rolls (3–35μm). These offer excellent thermal and electrical conductivity, serving functions such as electrical conduction, electromagnetic shielding, and heat dissipation in many industries, including automotive and electronics. Compared to individual copper foil sheets, copper foil rolls are better suited for continuous processing, achieving higher processing efficiency in high-volume production lines.
Types of Copper Foil Roll
Electrolytic Copper Foil Roll and Rolled Annealed Copper Foil Roll
Depending on the manufacturing process, copper foil rolls can be classified as electrolytic copper foil rolls and rolled copper foil rolls.
- Electrolytic(ED) Copper Foil Roll: Electrolytic copper foil rolls are produced by electrochemically depositing high-purity copper material into foil sheets, which are then rolled into coils. This method offers superior thickness control and lower cost compared to rolled copper foil. Due to its rougher surface, it is advisable for products needing high adhesion, such as electromagnetic shielding tape and PCB laminates.
- Rolled Annealed(RA) Copper Foil Roll: Rolled copper foil is manufactured through repeated mechanical rolling and annealing. Although its production is more complex and costly, it offers superior flexibility, resistance to bending, and a smoother surface finish. This allows you to use it in flexible printed circuit boards, bendable assemblies, and similar applications.
High Purity Copper Foil Roll
High-purity copper foil rolls are made from copper of superior purity, containing virtually no alloying elements such as silver, tin, or zinc, with a copper content of 99.9%. This significantly reduces the impact of impurities on their performance, resulting in ultra-low electrical resistance and outstanding thermal conductivity. They demonstrate enhanced stability and durability in electromagnetic shielding and heat dissipation applications. These foils are suitable for precision equipment, high-performance electronics, semiconductor components, and similar applications.
Ultra-Thin Copper Foil Roll
Ultra-thin copper foil rolls measure approximately 3 to 9μm in thickness, and can even be thinner. Compared to standard copper foil rolls, they not only save space and weight but also offer equally outstanding performance. Furthermore, they have better bend resistance compared to common copper foil, with reduced fatigue and fracture. For densely packed designs and miniature devices, ultra-thin copper foil rolls are the ideal choice. Their application is particularly well-suited for batteries, high-density flexible circuit boards, and portable devices.
Adhesive-Backed Copper Foil Rolls
Copper foil has good processing characteristics and can be bonded to adhesive layers to get better adhesion strength. The protective liner may be removed directly for application without additional adhesives, thereby improving high-volume processing efficiency. Conductive adhesive-backed copper foil rolls and non-conductive adhesive-backed copper foil rolls are available. Conductive adhesive-backed copper foil rolls are suitable for EMI and RFI shielding, grounding connections, and similar applications. Non-conductive adhesive-backed rolls are best for applications where high conductivity is not required.
Copper Foil Roll VS Copper Foil Sheet
Copper foil rolls are supplied in continuous lengths, whereas copper foil sheets are typically pre-cut into fixed-size individual sheets. We can precisely cut its sizes and shapes to your product. Consequently, they are better suited for prototyping and precision machining.
Feature Comparison
Firstly, copper foil rolls are typically thinner, ranging from approximately 3–35 μm. Copper foil sheets, however, are generally manufactured from thicker copper foil (9–70 μm). Both of them offer multiple thickness options. Secondly, copper foil rolls feature continuous lengths, allowing non-stop processing during high-volume production runs. Copper foil sheets, conversely, are supplied in fixed dimensions. You can customise it according to your product.
Processing Capabilities
Copper foil sheets offer greater processing flexibility compared to copper foil rolls. Thickness, shape, and dimensions can all be changed for specific applications. They support processing methods such as stamping, etching, and CNC machining. For small-batch precision designs and custom prototyping, they are the best choice. Copper foil rolls, processed via roll-to-roll methods, lamination, coating, and laminating, are better suited for high-volume production and continuous manufacturing.
Performance Comparison
Beyond differences in supply format, both copper foil rolls and copper foil sheets boast excellent electrical conductivity, thermal conductivity, and extremely low thermal resistance. They perform identical heat dissipation and electromagnetic shielding functions, though their suitable applications differ. Copper foil rolls are commonly used in flexible printed circuits, lithium battery current collectors, EMI shielding tapes, and composite materials. Copper foil sheets, however, are better suited for printed circuit boards (PCBs), precision stamped components, and grounding plates.
How to Choose the Right Copper Foil Roll Thickness?
Consider Your Processing Method
If you need to die-cut, stamp, bend, or continuously laminate the copper foil, you should first match the thickness to your processing method. A thinner copper foil roll is easier to bend and die-cut, making it suitable for products that require flexibility and light weight. A thicker copper foil is easier to keep its shape and is more suitable for structures that require a certain level of mechanical strength. Therefore, when you choose the thickness, you should first consider your processing method and final product structure, and then select the right specification.
Consider Your Conductivity and Shielding Needs
If you mainly use the copper foil roll for electrical connections or EMI shielding, you need to choose the thickness based on your actual shielding needs. In general, a thicker copper foil can provide a more stable conductive path, but thicker is not always better. You should choose the target thickness based on your application environment and shielding structure instead of simply comparing foil thicknesses.
Consider Your Available Space
If you need to install the copper foil in a narrow space or use it with other materials in a layered structure, the thickness will directly affect the final structure size. In this case, you need to consider the space taken up by the copper foil, adhesive layer, and other functional materials. For example, electronic products with limited space usually require thinner copper foil, while structures that need some support can use a thicker specification.
How to Choose the Right Copper Foil Roll for EMI Shielding?
Determine the EMI Shielding Location
Before choosing a copper foil roll, you need to first determine whether you will use the copper foil for cables, electronic components, equipment housings, or other areas that need shielding. Different locations have different requirements for foil thickness, flexibility, and processing. For example, areas that require wrapping or bending usually need more flexible copper foil, while shielding structures fixed to equipment surfaces may focus more on bonding performance.
Focus on Copper Grade and Conductivity
When you use copper foil for EMI shielding, we recommend that you confirm the copper grade and conductivity in advance. Good electrical conductivity helps form a continuous shielding layer. Therefore, when you purchase the product, you should not only consider the price or thickness. You should also confirm the material grade and conductivity data provided by the supplier. If your product has specific conductivity requirements, you can directly provide the target grade or conductivity range when asking for a quotation.
Choose the Right Temper for Your Processing Method
If you need the copper foil to be bent, stamped, formed, or bonded to curved surfaces, Temper is an important parameter to confirm. Softer copper foil is usually easier to process and is suitable for structures that require more bending. Harder copper foil is more suitable for applications that require better shape retention. You can choose the right Temper based on your actual processing method and bending requirements instead of specifying only the thickness of the copper foil roll.
Confirm Thickness and Dimensional Tolerances
For EMI shielding products, you need to choose the right foil thickness and confirm whether the thickness and width tolerances meet your processing requirements. If you need to die-cut, laminate, or use the foil in automated processing, stable dimensions can help reduce variations during processing.
Confirm the Surface Condition Based on Bonding Method
If you need to bond the copper foil roll with adhesive, insulating film, or other materials, you also need to confirm the surface condition in advance. Different bonding and lamination processes may have different requirements for the copper foil surface. Therefore, you need to tell your supplier about your bonding method and materials, so they can help you choose the right surface treatment and roughness. This can help reduce problems such as poor bonding during later processing.
