I. Structure and Principle of Aluminum Foil Packaging Bags for Mechanical and Electrical Equipment

Aluminum foil packaging bags for mechanical and electrical equipment are generally made of multi-layer composite materials. Common structures include PET/AL/PA/PE, PET/AL/PE, and PET/AL/NY/CPP. Different layers of materials, after lamination, form a high-barrier, multi-functional protective barrier. Specifically:

The PET layer primarily provides excellent mechanical strength and printability, giving the bag a certain degree of stiffness and abrasion resistance.

The AL aluminum foil layer is the core component, possessing extremely high barrier properties, effectively isolating moisture, oxygen, light, and odors, and is crucial for achieving moisture and rust prevention.

The PA or NY layer mainly serves to resist punctures and tears, preventing the packaging bag from breaking during loading or transportation.

The PE or CPP inner layer has good heat-sealing properties, ensuring a firm seal at the bag opening and maintaining a sealed state for a long time after vacuum degassing.

This multi-layer structure is firmly bonded through high-temperature lamination technology, which not only improves the overall mechanical strength of the bag but also significantly enhances its protective performance. The principle behind this design lies in using an aluminum foil layer to block the penetration of air and moisture, while simultaneously creating an "oxygen-free environment" through vacuum sealing, thus inhibiting metal oxidation and moisture absorption of electronic components at the source.

II. Main Performance Advantages of Aluminum Foil Packaging Bags for Mechanical and Electrical Equipment

**Outstanding Moisture and Rust Prevention**

Aluminum foil material has extremely low moisture permeability, effectively preventing water vapor in the air from entering the packaging, thereby preventing rust or mold growth on metal parts in mechanical and electrical equipment. Even in high-humidity warehousing environments in the south or during long-distance sea transport, it can keep the equipment surface dry.

**Significant Oxygen Barrier and Light Protection**

The aluminum foil layer almost completely isolates air and light, effectively preventing problems such as aging of plastic parts and oxidation of circuits caused by ultraviolet radiation. This characteristic is particularly crucial for equipment requiring long-term storage.

**Excellent Antistatic and Electromagnetic Shielding Performance**

Mechanical and electrical equipment often contains electronic control systems and precision chips. Static electricity interference can cause system damage. Aluminum foil packaging bags provide excellent electrostatic shielding protection, avoiding potential risks caused by static electricity buildup during transportation.

High mechanical strength and strong puncture resistance

Compared to ordinary plastic packaging bags, aluminum foil composite structures can withstand higher tensile and frictional impacts, are less prone to breakage, and are ideal for packaging large or irregularly shaped electromechanical equipment.

Excellent environmental protection and recyclability

Modern aluminum foil packaging materials widely use environmentally friendly adhesives and recyclable processes in production, conforming to the concept of green packaging, allowing for recycling and reducing industrial packaging waste.

III. Typical Application Scenarios of Aluminum Foil Packaging Bags for Electromechanical Equipment

Aluminum foil packaging bags for electromechanical equipment are used almost throughout the entire equipment manufacturing industry's outer packaging process, especially in export and long-distance transportation scenarios. For example:

Export Packaging for Precision Machine Tools and Automated Equipment

Products such as CNC lathes, machining centers, and testing equipment typically contain high-precision metal parts and electronic control systems. Vacuum aluminum foil packaging effectively prevents damage to equipment caused by salt spray corrosion and transportation vibrations.

Electrical Control Cabinets and Motor Protective Packaging

Electrical control cabinets, frequency converters, motors, and other equipment exposed to humid air for extended periods are prone to oxidation and short circuits. Aluminum foil sealed packaging ensures the internal environment remains dry during storage and transportation, extending the equipment's lifespan.

Export Packaging for New Energy and Electronic Equipment

Products such as energy storage battery modules and photovoltaic inverters have extremely high moisture-proof requirements. Aluminum foil vacuum packaging not only prevents moisture penetration but also effectively prevents external electrostatic interference.

Protective Packaging for Military and Aerospace Equipment

These devices have extremely stringent sealing requirements. Aluminum foil packaging bags can be used in conjunction with rust-preventive desiccants and vacuum extraction equipment to ensure stability even under extreme conditions.

IV. Key Points for Customizing Aluminum Foil Packaging Bags for Electromechanical Equipment

Different types of equipment have different requirements for packaging bag specifications, thickness, number of composite layers, and functions. Companies should consider the following aspects when customizing:

Dimensions and Thickness

Determine the bag's length, width, and thickness based on the equipment's external dimensions. For heavier equipment, a composite film thickness of 0.12mm or more can be selected to improve load-bearing capacity and tensile strength.

Structural Design

A suitable composite layer structure should be selected based on the storage and transportation environment. For example, a PET/AL/PA/PE structure is suitable for long-term maritime transport, while a PET/AL/PE structure is suitable for short-term warehousing.

Antistatic and Vacuum Functions

For electronic and electromechanical products, an antistatic layer can be added; if vacuum packaging is required, the inner PE layer must have excellent heat-sealing and airtight properties.

Printing and Labeling

Companies can customize the appearance printing according to export requirements, including product information, company logo, moisture warnings, etc., which facilitates identification and enhances brand image.

Environmental Protection and Certification Standards

In international trade, aluminum foil packaging bags should comply with environmental standards such as RoHS and REACH to ensure smooth customs clearance for exported products.

V. Usage Procedures and Precautions for Aluminum Foil Packaging Bags for Electromechanical Equipment

To ensure packaging effectiveness, the use of aluminum foil packaging bags for electromechanical equipment should strictly follow the standardized procedures:

Cleaning and Pre-treatment

Before packaging, ensure the equipment surface is clean and free of oil or moisture. For metal parts, apply rust-preventive oil or place rust-preventive sheets to enhance protection.

Bagging and Vacuum Degassing

After placing the equipment in Aluminum Foil Bags, a vacuum sealer is used to remove air, creating a low-oxygen environment inside. The bag is then heat-sealed at high temperature.

Using Desiccants and Rust Inhibitors in Combination

Depending on the size of the equipment and the air humidity, desiccant bags or rust inhibitor sheets are placed appropriately to further enhance the moisture-proof effect.

Sealing Test and Outer Packaging Protection

After heat sealing, a sealing test should be conducted. Once it is confirmed that there is no leakage, a corrugated cardboard box or wooden crate is added for reinforcement and protection.

Transportation and Storage Conditions

The packaged equipment should be protected from contact with sharp objects or heavy pressure. The storage environment should be kept dry and well-ventilated, avoiding direct sunlight.

VI. Industry Development Trends of Aluminum Foil Packaging Bags for Electromechanical Equipment

With the development of intelligent manufacturing and international trade, the requirements for packaging safety and environmental performance of electromechanical equipment are constantly increasing. In the future, aluminum foil packaging will develop in the following directions:

Multifunctionality: High-performance composite structures integrating moisture-proof, rust-proof, anti-static, and UV-proof properties will become the mainstream.

Green and Environmentally Friendly: Utilizing biodegradable materials and recyclable technologies to reduce environmental pollution.

Intelligent Identification: Achieving tracking and management through QR codes or RFID tags to improve warehousing and logistics efficiency.

Automated Packaging System Application: Integrating vacuum packaging, testing, and sealing into automated production lines for standardized operations.