Material And Precautions for Using Anti-static Bubble Wrap Bags
In the fields of electronic manufacturing, semiconductors, precision instruments, etc., the protection of some electrostatic sensitive items, such as chips, PCB boards, sensors, etc, is required. not only needs to isolate the risk of electrostatic breakdown, but also needs to resist collision damage during transportation and turnover. As a functional packaging that combines electrostatic protection and buffering protection, Anti Static Bubble Wrap perfectly solves this pain point and becomes the core choice that balances safety and practicality.
As a professional flexible packaging customization service provider, MTPAK has long cooperated with related enterprises and accumulated rich experience in anti-static packaging products. This article will systematically analyze the types, core characteristics, and scenario applications of Anti Static Bubble Wrap, helping electronic enterprises accurately match protection needs.
Before understanding anti-static bubble wraps, let's first understand the principles of anti-static packaging bags.
What is the principle of anti-static packaging bags?
There are two main situations in which common electronic components generate static electricity: frictional charging and contact charging. In order to avoid the impact of static electricity on use, an anti-static bag made of LDPE and LLDPE began to emerge.
Different types of anti-static bags have slightly different protection principles, but the essence of anti-static bags is to break the conditions for static electricity accumulation through material modification or structural composite, and to achieve static dissipation and shielding function by adding anti-static agents or composite conductive layers. The general data standard is that the inner layer surface resistivity is 10 ^ 5-10 ^ 10 Ω/sq, the outer layer is less than 10 ^ 8 Ω/sq, and the static attenuation time is less than 0.05 seconds.
Surface anti-static treatment (for internal static electricity generation): Coating or adding anti-static agents, such as cationic and nonionic surfactants, on the surface of basic substrates such as PE (polyethylene) and PET (polyethylene terephthalate). These anti-static agents can absorb trace amounts of moisture in the air, forming a very thin conductive film on the surface of the bag, allowing the static electricity generated by friction to be quickly conducted to the outside through the film, avoiding the accumulation of static electricity. This principle of anti-static bags mainly solves the problem of the bag body not generating static electricity, and is commonly found in pink and transparent basic anti-static bags.
Faraday cage shielding effect (against external electrostatic interference): For items that require a higher level of protection, such as chips and circuit boards, the anti-static bag will use a multi-layer composite structure to form a shielding space similar to a Faraday cage. The metal coating layer (usually aluminum foil or aluminum-plated film) can reflect the external electrostatic field and prevent static electricity from penetrating the bag body; The inner layer of PE avoids direct contact between the metal layer and the items inside the bag, and also has basic anti-static function. This principle of anti-static bags can prevent internal static electricity and shield external static electricity, with a higher level of protection. They are commonly found in silver metal shielding bags and black conductive bags.
What is an anti-static bubble wrap?
Anti-static bubble wrap is a special packaging material that combines the dual functions of anti-static and bubble wrap. It is designed to protect static-sensitive items such as electronic components and precision parts. Its core function is to eliminate or control the accumulation of static electricity and avoid damage to items caused by electrostatic discharge (ESD). In fields such as electronic manufacturing, semiconductors, and the military industry, static electricity may penetrate chips, burn circuits, or interfere with precision equipment. Through special materials or structural designs, it becomes a safety barrier for the storage, transportation, and production processes of such items.
What are the materials for anti-static bubble wrap？
Anti-static bubble bags are usually composed of three layers of materials, with the outer layer being anti-static material, the middle layer being bubble film, and the inner layer being PE film.
Outer anti-static layer: Its main function is to quickly dissipate surface static electricity generated, avoiding damage to electronic components due to static electricity. It is usually made of materials with good conductivity.
Middle layer bubble film: Its main function is buffering and shock resistance, which can effectively absorb external impact forces and protect products from damage. The thickness and bubble size of the bubble film can be customized for products of different weights and precision.
Inner PE film: a PE film used for packaging and moisture resistance, with good heat sealing performance to ensure complete bag sealing, reduce water vapor and dust intrusion, and can be used in conjunction with a vacuum sealing machine.
What are the precautions for using anti-static bubble wrap？
Before use, a comprehensive inspection of the anti-static bubble bag is required:
Firstly, observe the appearance. If any defects, such as damage, scratches, or bubble rupture, are found on the bag body, it should be replaced immediately because the damaged area will cause the anti-static coating to fail and cannot provide a cushioning effect.
Next, confirm the status of the bag body, ensuring that there are no attachments such as moisture, oil stains, dust, etc. Moisture can reduce the conductivity of anti-static materials, while dust and oil stains may contaminate internal products or generate additional static electricity during transportation.
When packing the product into an anti-static bubble bag, two core requirements should be noted:
One is to avoid direct contact between hands and the surface of the product or the inner wall of the bag. It is recommended to wear anti-static gloves during operation, as the static electricity carried by the human body can easily be transferred to the product or bag through contact, especially for sensitive components such as chips and PCB boards, which pose a high risk.
The second is to control the gap between the product and the bag body, ensuring that the product fits snugly inside the bag without shaking. If the gap is too large, it may cause the product to collide with the bag body during transportation, which not only weakens the cushioning and shock-absorbing effect of the bubbles but may also generate new static electricity due to friction.
The sealing process needs to select an appropriate sealing method based on the bag material and product requirements:
Conventional scenarios can use anti-static sealing machines for heat sealing, or be wrapped and sealed with heat shrink film; Accurate temperature control is required during operation. Overheating can damage the anti-static coating and bubble structure of the bag, while undercooling can lead to loose sealing, causing external impurities to enter or the internal anti-static environment to fail. In addition, residual air inside the bag must be discharged before sealing, and debris near the bag opening must be cleaned to avoid air expansion and squeezing bubbles, or static electricity generated by the friction of debris during transportation.
During use, it is necessary to dynamically check the status of the anti-static bubble bag. If any problems, such as damage to the bag body, detachment of the adhesive layer, or delamination of bubbles are found, the bag should be replaced immediately and cannot be continued to be used, as such damage can directly cause the anti-static and buffering functions to fail, which may result in product damage. Moreover, after a single use (if it meets the standard for repeated use), it is necessary to promptly clean the residual debris, dust, and stains inside the bag, keep the bag clean, avoid pollutants affecting the anti-static performance of the next use, and extend the service life of the bag.
Conclusion
Compared to ordinary anti-static bags, anti static bubble wrap is more practical. However, if used improperly, its anti-static and buffering protection performance may be compromised, and even pose a risk of product damage. Therefore, in practical operation, it is necessary to strictly follow the regulations for use.
Do you want to receive an immediate solution for anti-static bags? Please contact us to submit your requirements for free samples.
Email：account@mtpak.com
Contact us：https://mtpak.com/contact-mtpak