I. Material Structure and Composition of Vacuum Bags for Aluminum Foil Equipment

Vacuum bags for aluminum foil equipment are typically made of multi-layer composite materials, including an aluminum foil layer (AL), polyester film (PET), nylon film (NY), and Polyethylene Film (PE). Each layer has a unique function, and through composite bonding, they form a high-performance packaging bag that meets the protective needs of equipment during transportation and storage.

Outer Layer (PET or Nylon)

The outer layer primarily enhances mechanical strength and abrasion resistance, while also providing high-definition printing capabilities for easy printing of company logos, model numbers, and precautions. PET film is not only highly abrasion-resistant but also allows for high-definition printing of patterns and information, while nylon film enhances puncture and tear resistance, making the packaging bag less prone to damage during handling and transportation.

Middle Layer (Aluminum Foil Layer)

The aluminum foil layer is the core functional layer of the vacuum bag for aluminum foil equipment. Its low air permeability and low moisture permeability effectively block air, moisture, light, and odors, ensuring that metal parts do not rust, precision electronic components are protected from moisture, and the performance of instruments and equipment remains stable.

Inner Layer (PE or CPP)

The inner layer, acting as a heat-sealing layer, comes into direct contact with the equipment, providing excellent flexibility and heat-sealing performance. This ensures the packaging bag remains completely sealed during vacuuming and sealing, preventing air ingress or liquid leakage.

Functional Composite Layer (Optional)

For specific equipment needs, antistatic, UV-resistant, or high/low temperature resistant layers can be added to the composite structure to ensure the packaging bag performs its protective function in various environments.

This multi-layered composite structure guarantees the comprehensive advantages of aluminum foil vacuum bags in terms of protection, barrier properties, mechanical strength, and environmental resistance.

II. Core Performance of Aluminum Foil Vacuum Bags for Equipment

Aluminum foil vacuum bags for equipment are widely used in the industrial field. Their core performance is mainly reflected in the following aspects:

Excellent Barrier Performance

The aluminum foil layer almost completely blocks air and water vapor, preventing metal parts from rusting, electronic components from getting damp, or equipment from oxidizing, extending storage time and improving transportation safety.

Vacuum Sealing Capability

The inner heat-sealing film ensures a tight seal. Vacuum extraction removes air from the bag, further reducing the risk of oxidation and moisture damage, while also minimizing vibration and friction damage during transport.

Anti-static and Anti-contamination

An anti-static layer can be added to protect electronic components and precision instruments from electrostatic damage. The composite structure also blocks dust and impurities, maintaining equipment cleanliness.

High Mechanical Strength and Puncture Resistance

The composite material enhances the bag's tear and puncture resistance, ensuring the integrity of even sharp or heavy equipment.

High and Low Temperature Resistance

Suitable for use in environments ranging from -40℃ to +120℃, suitable for sea transport, cold chain transportation, and high-temperature production environments, ensuring equipment safety.

Chemical Corrosion Resistance and Sunlight Protection

The aluminum foil layer blocks ultraviolet rays and some chemical gases, protecting photosensitive and chemically sensitive equipment from environmental damage.

Environmental Performance

Some aluminum foil vacuum bags use recyclable or biodegradable composite materials, conforming to industrial green packaging principles.

III. Production Process of Vacuum Bags from Aluminum Foil Equipment

The high quality of vacuum bags from aluminum foil equipment stems from a precise production process, including composite material preparation, printing, bag making, and quality inspection:

Composite Material Preparation

Through dry lamination or extrusion lamination processes, PET, aluminum foil, PE, and other materials are combined into a multi-layer composite film. During the lamination process, the amount of adhesive, temperature, and tension must be strictly controlled to ensure uniform bonding and prevent delamination of each layer.

Curing Treatment

The composite film undergoes a constant-temperature curing treatment to fully solidify the adhesive, improving the adhesion and mechanical strength of the composite layers.

Printing and Slitting

The outer PET film can be printed in full color, displaying the company logo, product model, production batch, precautions, and anti-counterfeiting labels. It is then slitted into rolls or semi-finished products according to equipment specifications.

Bag Making Process

Automatic bag making machines are used for three-side sealing, four-side sealing, or three-dimensional bottom sealing to form stand-up or flat-bottom vacuum packaging bags.

Quality Inspection

Strict testing is conducted on heat seal strength, tensile strength, puncture resistance, and sealing performance to ensure that each batch of products meets industrial packaging standards.

IV. Application Scope of Aluminum Foil Vacuum Bags for Equipment

Aluminum foil vacuum bags for equipment are suitable for packaging various industrial equipment and parts. Main application areas include:

Machinery Parts Packaging

Gears, bearings, hydraulic components, metal screws, etc., are susceptible to moisture or oxidation. Vacuum Aluminum Foil Bags effectively prevent rust and performance degradation.

Electronic Components and Precision Instruments

Chips, circuit boards, sensors, CNC instruments, etc., are susceptible to moisture, static electricity, or dust contamination. Anti-static aluminum foil vacuum bags provide complete protection.

Metal Materials and Powder Packaging

Powder metallurgy materials, alloy particles, precision castings, etc., are susceptible to moisture or oxidation. Vacuum aluminum foil bags can extend shelf life and maintain performance stability.

Export Equipment Transportation

Long-distance transportation, sea freight, and high-humidity environments require high-quality packaging. Aluminum foil vacuum bags effectively prevent moisture, salt spray, and shock.

Packaging for Chemical and Pharmaceutical Raw Materials

Powdered chemical reagents and pharmaceutical raw materials are sensitive to humidity. Aluminum foil vacuum bags can maintain the stability of their components and prevent contamination.

V. Specifications and Customization Points for Aluminum Foil Equipment Vacuum Bags

When selecting aluminum foil vacuum bags for equipment, companies should customize them according to the type, size, transportation, and storage conditions of the equipment:

Size and Thickness

The bag size should match the volume of the equipment. The thickness is generally between 0.08mm and 0.25mm. Thicker films are suitable for heavy or sharp parts.

Functional Composite Design

Antistatic, UV-resistant, high and low temperature resistant, and chemical corrosion resistant layers can be added as needed to cope with complex industrial environments.

Sealing Method

Heat sealing, vacuum sealing, nitrogen filling, or double sealing methods can be selected. Some equipment can be equipped with zippers or easy-tear designs to improve operational convenience.

Three-Dimensional Bottom Design

For large or specially shaped equipment, a three-dimensional bottom or side sealing design is used to improve stability and handling convenience.

Printing and Labeling

Company logos, product models, production batches, and precautions can be printed for easy management and brand promotion.

VI. Recommendations for the Use and Storage of Vacuum Bags for Aluminum Foil Equipment

Storage Environment

Maintain a dry, cool environment free of corrosive gases. Avoid direct sunlight and high temperatures.

Operating Precautions

Avoid scratching the bag with sharp objects during filling. Use professional equipment for vacuuming to ensure a tight seal.

Handling and Transportation

Avoid heavy pressure and prolonged compression to ensure the bag and equipment remain intact.

Regular Inspection

For equipment stored long-term, regularly check the sealing and integrity of the packaging bags. Replace packaging materials as needed.