Your Professional Ultra-thin Copper Foil Supplier!

 

 

Shaanxi Huiyou Shengbang Precision Foil Manufacturing Co., Ltd. specializes in the production of Non-Ferrous Metal Foils, Refractory Metal Foils, Rare (Precious) Metal Foils, Speaker Parts, Titanium Stamping Parts,etc.

 

Product Application
Our company's titanium foil is used in 3C, chemical, and battery industries; tin foil is used in the electronics field to make circuit boards, etc.zirconium foil is mainly used in nuclear reactors and aerospace; copper foil is used in condensers, heat exchangers, etc.


Advanced Production Equipment
Our company has advanced Sendzimir twenty-high rolling mill, four-high rolling mill, tensioning and leveling machine, annealing furnace, metal slitting machine, foil cleaning and deoiling unit and other equipment.


Quality Guaranteed
Shaanxi HYSB Precision Foil Co., Ltd.Companies get GB/T19001-2016/1S09001:2015Quality management system certification.

 

Quick response
We promise to respond to your inquiries within 24 hours to ensure that you receive the information and support you need in a timely manner.

Characteristics of Ultra-thin Copper Foil
 

Extremely thin: The thickness of ultra-thin copper foil is extremely small, usually below a few microns, to adapt to smaller packaging sizes and higher wiring density.

 

High conductivity: As an excellent conductive material, ultra-thin copper foil has higher conductivity and can effectively improve the energy density and charging and discharging efficiency of the battery.

 

Lightweight: Its thinner thickness and lighter weight help to achieve the thinness of the battery and improve the portability of the product.

 

Excellent ductility: Ultra-thin copper foil can adapt to various complex shapes and structures during the battery manufacturing process, improving the manufacturing efficiency and reliability of the battery.

 

High precision and flatness: In order to ensure the fine circuit production on the packaging substrate, ultra-thin copper foil needs to have extremely high surface flatness and thickness uniformity.

 

Excellent heat resistance: During the packaging process, copper foil needs to withstand high temperatures, so it requires good stability at high temperatures.

 

Good peeling performance‌: For peelable ultra-thin copper foil, it is required to be able to be easily and cleanly peeled off from the carrier layer or insulating base film while maintaining the integrity of the copper foil itself‌.

 

Application of Ultra-thin Copper Foil

‌Electronic Product Manufacturing
Ultra-thin copper foil is widely used in the manufacture of various electronic products, such as mobile phones, tablet computers, laptops, etc., due to its excellent conductivity and strippable properties. In mobile phone production, it can be used to make mobile phone antennas and circuit boards.

 

‌Lithium Battery‌

Ultra-thin copper foil is one of the key materials for lithium batteries. As a carrier of negative electrode active materials and negative electrode current collector, it can efficiently conduct current and improve the energy density and charge and discharge performance of the battery. At the same time, it also helps to reduce the amount of negative electrode materials and reduce costs.

‌Solar Cells

Ultra-thin copper foil can be used as a conductive layer for solar cells, helping solar cells to efficiently convert solar energy and improve the power conversion efficiency of solar cells.

‌Flexible Circuit Boards

Using the strippable properties and flexibility of ultra-thin copper foil, flexible circuit boards can be made, which can be disassembled and reused multiple times, and are suitable for application scenarios that require frequent replacement or adjustment of circuits.

‌Other fields‌

Ultra-thin copper foil is also widely used in electronics, communications, electricity and other fields, such as as a supporting material for diaphragms to improve the mechanical strength and stability of diaphragms, and in various occasions requiring high electrical conductivity, high thermal conductivity and high flexibility‌.

 

Thickness of ultra-thin copper foil

According to the thickness classification of copper foil, the thickness of ultra-thin copper foil is defined in the range of 6μm to 12μm. Due to its extremely thin thickness, ultra-thin copper foil is particularly suitable for high-frequency circuits and miniaturized devices, and can meet the strict requirements of these fields on material thickness and performance.

Rolled Copper Foil HA, HA-V2 Foil

 

Processing process of ultra-thin copper foil

 

 

‌Electrolytic copper dissolution
Electrolytic copper or wire return material of equivalent purity is used as raw material and dissolved in a solution containing copper sulfate. Through the electrolytic process, copper ions are deposited on the cathode roller to form copper foil. The thickness of the copper foil is controlled by the cathode current density and the rotation speed of the cathode roller‌.

 

‌Surface treatment
This process is mainly based on electrochemical reaction and is divided into three stages. The first stage forms a coarsening layer to maintain the dendritic crystal structure composed of copper and copper oxide; the second stage adds brass or zinc as a barrier layer to prevent substrate contamination such as particle migration; the third stage is to plate zinc, nickel, tin and other metals or alloys on the surface of the copper foil as an anti-oxidation coating‌.

 

‌Slitting and packaging
The electrolytic and surface-treated copper foil is sheared and packaged for subsequent application and transportation‌.

 

Electrolytic Copper Foil for Rigid Circuit Boards

 

Conductivity and thermal conductivity of ultra-thin copper foil

‌Conductivity‌:
As a processed product of metallic copper, ultra-thin copper foil retains the excellent electrical conductivity of copper itself. Its electrical conductivity is second only to silver, and its price is much lower than silver, so it has become a key material in the electrical industry‌.In the electronics industry, ultra-thin copper foil is a key material for printed circuit boards (PCBs), and plays an important role as a conductor to connect various electronic components.

 

‌Thermal conductivity‌:
Ultra-thin copper foil also has excellent thermal conductivity and can quickly transfer heat from one place to another.However, as the thickness of the copper foil decreases, especially when the thickness drops to a certain extent, the temperature gradient will rise sharply, which may affect the thermal conductivity. Therefore, in some applications with high thermal conductivity requirements, it is necessary to select copper foil of appropriate thickness to ensure good thermal conductivity‌.

 

 
Packaging and transportation of ultra-thin copper foil
 
01/

Handling method‌: Considering the thin and fragile characteristics of ultra-thin copper foil, handling tools and equipment designed for copper foil, such as padded transport vehicles or suction cup handling machinery, should be used to minimize damage to the copper foil.

02/

Pre-packaging preparation‌: Before packaging, the copper foil products need to be strictly inspected for quality to ensure that their surfaces are clean and dust-free and meet quality standards. In addition, waterproof treatment is required, and the copper foil is placed on a waterproof film to prevent it from moisture and corrosion.

03/

‌Packing operation‌: Use cushioning material to wrap the copper foil evenly to avoid physical impact. Then put the wrapped copper foil neatly into the carton and add additional cushioning material to fix its position. Finally, use sealing tape to seal the carton to ensure the integrity of the package.

04/

Marking and inspection‌: Clearly mark the product name, specifications, quantity and related warning signs on the package for identification and inspection. After the packaging is completed, the package must be inspected to ensure that the carton, sealing tape, packaging logo and the stability of the copper foil meet the requirements.

 

Certificate

 

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Frequently Asked Questions

 

Q: What is non-ferrous metal foil?

A: Non-ferrous metal foil refers to dyed or thin films made of non-ferrous metals (such as aluminum, copper, titanium, nickel, zinc, magnesium, etc.). Usually, these metals are rolled, stretched or even processed to set certain standards for thickness, usually between a few microns and a few millimeters. Non-ferrous metal coatings have a variety of properties, such as good electrical conductivity, thermal conductivity, corrosion resistance and lightness, and are widely evaluated in electronics, aviation, packaging, construction, automotive and other fields.

Q: What kind of metal is foil made of?

A: It is usually made of metals such as gold, silver or aluminum. Gold and silver foil are often used in decoration, art, crafts and food decoration, while aluminum foil is widely used in food packaging and cooking. Gold and silver foil have the same ductility and can be hammered into very thin sheets

Q: How is non-ferrous metal foil produced?

A: The foil production process generally includes the following main steps:
Raw material selection: Foil is usually made of metal (such as aluminum, copper or gold) or some abbreviation materials (such as plastic). According to different uses, choose the appropriate raw materials.
Melting and casting: First, the metal raw materials are melted at high temperature, and then the molten metal is cast into blocks. This process is usually carried out in a special melting furnace.
Rolling: The cast metal block is cold rolled or hot rolled. The purpose of rolling is to swell the metal to the required thickness. Cold rolling can produce a thinner and smoother surface, while hot rolling is suitable for processing thicker metals.
Amplifier: During the rolling process, the metal will harden, so it needs to be amplified. The amplifier heats the metal to a certain temperature and then slowly cools it down to restore its plasticity and flexibility.
Cutting and shaping: The rolled output is cut to the required requirements, and then customized or further processed to meet specific needs.
Surface treatment: Depending on the purpose, the coating will be coated, sprayed or otherwise treated to enhance its corrosion resistance, conductivity and other properties.
Packaging and shipment: The processed foil will be packaged according to the standards and finally shipped to customers or markets.

Q: What is the difference between aluminum foil and tin foil in terms of composition?

A: Aluminum foil: The main component is aluminum, which is usually made by rolling aluminum ingots. The thickness of aluminum ingots is generally between 0.02 mm and 0.1 mm.
Tin foil: The main component is tin, and tin foil is significantly lower than aluminum foil. It is a dark color made by rolling tin or tin alloy.

Q: What are the physical differences between aluminum foil and tin foil?

A: Aluminum foil: Has good flexibility, corrosion resistance, can withstand higher temperatures, and has good heat and oxygen insulation properties.
Tin foil: Is usually more brittle, not as flexible as aluminum foil, and has poorer heat resistance. Tin foil may react when it comes into contact with certain chemicals, especially acidic and alkaline substances.

Q: What is the difference between aluminum foil and tin foil in terms of usage?

A: Aluminum foil: Widely used in packaging materials such as food, pharmaceuticals and cosmetics. It is often used to prevent moisture, oxidation and keep food fresh due to its good barrier properties. At the same time, aluminum foil is also used in cooking and baking, such as wrapping food or using it in baking trays.
Tin foil: Historically, it was widely used in food packaging, but with the popularity of aluminum foil, the application of tin foil has been greatly reduced. Now, tin foil is mainly used in some specific industries or as a material for certain crafts.

Q: What is titanium foil?

A: Titanium foil is a thin sheet material made of titanium metal, usually with a small thickness, usually below 0.1 mm. Titanium foil is widely used due to its excellent physical and chemical properties, including high strength, light weight, excellent corrosion resistance and biocompatibility.

Q: What is ultra-thin zirconium foil?

A: Ultra-thin zirconium foil refers to very thin zirconium metal sheets, usually between a few microns (μm) and a few millimeters (mm). Zirconium has excellent corrosion resistance, high melting point and good mechanical properties, so it is widely used in aerospace, nuclear energy, medical equipment and chemical industries. Due to the characteristics of ultra-thin zirconium foil, it has unique advantages in some special applications, such as lighter weight, better formability and improved thermal conductivity.

Q: What are the main applications of ultra-thin copper foil?

A: Printed circuit boards (PCBs): Widely used in various electronic devices to support complex circuit designs.
Flexible circuits: Used in bendable or foldable electronic products such as smartphones and wearable devices.
Battery components: Used in new energy devices such as lithium batteries to improve battery performance and efficiency.

Q: What is titanium foil?

A: Titanium foil is a thin sheet made of titanium metal, usually less than 0.2 mm thick. Titanium foil has many excellent properties, including light weight, high strength, corrosion resistance and high temperature resistance.

We're professional ultra-thin copper foil manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to buy ultra-thin copper foil for sale here and get pricelist from our factory. For price consultation, contact us.

Electrolytic Copper Foil for Rigid Circuit Boards, Copper Cathode, ultra thin copper foil

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