YSA aluminum foil production process

Papel de aluminio, a seemingly ordinary material, carries countless possibilities in modern industry and daily life. From food packaging to new energy batteries, from electronic components to building insulation, aluminum foil has become an indispensable functional material with its lightweight, high barrier and excellent conductivity.

At YSA, we not only produce aluminum foil, but also promote innovation and breakthroughs in aluminum foil technology. Our innovation journey spans decades, and our craftsmanship is constantly improving to ensure that every roll of aluminum foil we produce meets the highest quality and performance standards. We are proud to be at the forefront of aluminum foil production.

This article will take you to explore the complex and fascinating production process of aluminum foil.

The core value of aluminum foil

Aluminum foil is a material that is widely used around the world. This material runs through all aspects of our daily lives, from snack packaging to advanced applications in batteries and capacitors. This is mainly due to its unique properties:

• Excellent barrier properties: completely block oxygen, moisture and light, extending the shelf life of food and medicine.
• Excellent thermal and electrical conductivity: widely used in lithium batteries, capacitors and electronic heat dissipation.
• Lightweight and plastic: easy to process into different shapes, suitable for packaging, construction and industrial use.
• 100% recyclable: environmentally sustainable, in line with the global green manufacturing trend.

Table1: The main application areas of aluminum foil

Industry	Typical Application	Key Performance Requirements
Food Packaging	Chocolate, dairy products, ready meals	High barrier properties, food safety certification
New Energy Batteries	Lithium battery positive electrode current collector	Ultra-thin (9-20μm), high conductivity
Electronic Industry	Capacitors, electromagnetic shielding	High purity (≥99.9%), low pinholes
Architectural Decoration	Thermal insulation film, decorative veneer	Weather resistance, printability

Precision manufacturing process of YSA aluminum foil

1. Raw material selection: Purity determines quality.

We use high-purity electrolytic aluminum liquid with a purity of more than 99.7%, and strictly test the content of trace elements to ensure that the material is free from impurities. For special needs, we can provide 99.99% ultra-high purity aluminum foil, which is suitable for the high-end electronics industry.

2. Melting and casting: precise temperature control to remove impurities.

• Melting temperature: 700±5℃ to ensure the fluidity of aluminum liquid.
• Refining process: sodium chloride + potassium fluoride composite refining agent is used to remove hydrogen and alumina impurities
• Casting specifications: aluminum ingot thickness 50-300mm, providing a uniform substrate for subsequent hot rolling.

3. Hot rolling: optimizing grain structure.

We heat the aluminum plate to a temperature of 480°C to 500°C (896°F – 932°F) and then feed it into our powerful hot rolling mill. This process gradually thins the thickness of the aluminum ingot to about 3-5 mm. Hot rolling is essential to eliminate casting defects and perfect the internal grain structure of the material, thus preparing it for the next stage.

Table2:

Parámetro	Estándar	value Function
value Function	480-500℃	Eliminate casting defects and refine grains
Target thickness	3-5mm	Provide uniform material for cold rolling

4.Cold rolling and finishing rolling, precision control to create ultra-thin aluminum foil.

• Cold rolling: multiple rolling at room temperature, reducing the thickness to 0.13-0.2mm.
• Intermediate annealing: eliminate work hardening and restore the flexibility of aluminum foil.
• Intermediate annealing: eliminate work hardening and restore the flexibility of aluminum foil.

5. Annealing We put the finished specification aluminum foil into a large annealing furnace.

Here, we heat the aluminum foil, keep it at a specific temperature, and then slowly cool it. The annealing temperature is usually 200°C to 350°C (392°F – 662°F), and the duration depends on the thickness of the aluminum foil and the expected final performance. This process can eliminate the residual stress generated during rolling, enhance ductility and flexibility, and optimize the end use of the aluminum foil.

Table3:

Product type	Temperatura de recocido	Annealing time	Performance optimization target
Food packaging foil	260-490℃	2-6 hours	Improve flexibility
Battery foil	350-450℃	4-8 hours	Balance strength and conductivity
Capacitor foil	425-500℃	≤15 hours	Improve dielectric properties

6: Surface treatment and polishing.

The rolling process sometimes leaves subtle surface defects. To ensure the product is flawless, we will perform various surface treatments, including precision slitting, polishing and brushing.

Tratamiento de la superficie: polishing, coating, printing, to meet food grade or industrial grade requirements.

Precision slitting: width tolerance ±0.1mm, to ensure that the coil is flat and burr-free.

Two YSA’s technical advantages

1. Strict quality control system.

• Online detection: X-ray thickness gauge monitors thickness fluctuations in real time.
• Physical performance testing: tensile strength, elongation, pinhole count full inspection.
• Food safety certification: passed FDA, EU 10/2011 and other international standards.

2. Sustainable production commitment.

Waste recovery rate ≥ 95%, reducing resource waste. Low-carbon process: waste heat recovery system reduces energy consumption.

Three Why Choose YSA

Our commitment to excellence is reflected in every aspect of production. Careful selection of raw materials, precise control of casting and rolling temperatures, and strict quality control measures all create high-quality aluminum foil products that we are proud of. We are well aware that customer needs are diverse, so we continue to innovate and expand our product range. Whether you are looking for standard household aluminum foil or professional industrial-grade aluminum foil, YAS can meet your needs.

• Global supply chain: Products are exported to 30+ countries, supporting fast delivery.
• Customized service: Alloy composition, thickness, and surface treatment can be adjusted according to needs.
• Technical support: Provide aluminum foil application solutions to help customers upgrade their products.

From the initial melting stage to the final packaging product, we have explored all aspects of aluminum foil production, and it is obvious that this seemingly simple material is the result of complex processes and unwavering dedication. We sincerely invite you to visit our website to learn more about our rich product line and excellent service. From raw materials to finished products, YSA empowers aluminum foil with technology and provides reliable support for your business!