
Static electricity is a common issue with plastic, especially during production and packaging. There are several ways to discharge static electricity from plastic. One method is to use a diluted solution of water and dish soap, which forms a film that controls static buildup. Another method is to use anti-static brushes, which are commonly used in the photo business to remove dust or lint from negatives. Additionally, you can search for a static eliminator or deionizing bar that suits your specific application. These tools are often used in the plastic bag-making industry to prevent bags from repelling each other during packing and stacking.
| Characteristics | Values |
|---|---|
| Use a diluted solution | Spray a diluted solution of water and dishwashing soap on the plastic and do not wipe it off. It will form a film that controls static buildup. |
| Antistatic brushes | Use antistatic brushes to get rid of dust or lint pickup. |
| Static eliminator or deionizing bar | Use a static eliminator or deionizing bar to prevent plastic bags from repelling each other when packing or stacking. |
| Photoionization | Use photoionization around PCBs to reduce the risk of static electricity. |
| Higher humidity | Test a higher humidity to reduce static. |
| Conductive brushes | Arrange for the plastic to pass over conductive brushes so they can collect/equalize the charge from both sides. |
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What You'll Learn

Try a diluted solution of water and dish soap
A diluted solution of water and dish soap can be used to discharge static electricity from plastic. This method was used in early attempts at static electricity control in the aerospace and missile industries.
To do this, prepare a diluted mixture of water and dish soap in a spray bottle. Generously spray the solution onto the plastic surface without wiping it off. The soapy water will form a film on the plastic that helps to control static buildup.
It is important to note that this method may not be suitable for certain applications where moisture is a concern, such as with molding plastics. In such cases, alternative methods like using anti-static brushes or increasing humidity may be more effective.
Additionally, the presence of polyisobutylene in the plastic can contribute to static issues. This substance is often mixed into LDPE plastic as a cling agent, making the surface sticky and more prone to static adhesion. In these cases, a diluted water and dish soap solution may still be effective in reducing static, but it may require more frequent application or the need to address the root cause by choosing a different type of plastic.
Overall, using a diluted solution of water and dish soap is a simple and effective way to discharge static electricity from plastic surfaces, especially in situations where moisture is not a limiting factor.
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Use anti-static brushes
Anti-static brushes are an effective way to discharge static electricity from plastic. Anti-static brushes are used in a variety of industries, including aerospace, automotive, electronics, food service, forensics, and manufacturing. They are particularly useful for static-sensitive environments, such as munitions plants, where static electricity can be dangerous or even lethal.
When selecting an anti-static brush, it is important to consider the specific application and the type of material being used. Anti-static brushes can be made from natural fibres such as goat hair, horsehair, tampico, and hog bristle, synthetic fibres like static dissipative nylon, Thunderon, Statigo9, and carbon fibre, or metal fibres including brass, phosphor bronze, aluminium, and stainless steel. The type of fibre used depends on the conductivity and sensitivity of the application. For example, metal fibres are typically used for conductive brushes and some cleanroom applications, while natural fibres are suitable for non-electronic purposes.
The design of the anti-static brush is also important. Soft fibres are preferable as they abrade slower than stiffer fibres while achieving the same result. Additionally, it is recommended to choose the smallest diameter possible for the fibres to minimise brush wear. The handle material and design should also be considered, especially for manual applications. Wood is the most cost-effective option for brush handles, but it is not suitable for cleanrooms. Metal handles made of aluminium, brass, or stainless steel are commonly used for conductive applications.
Anti-static brushes can be customised to meet specific requirements and unique specifications. Customisation options include the brush style, size, fibre material, and handle design. It is important to consider the environmental factors that may influence the selection of the fibre and handle, such as temperature, chemical environment, and FDA requirements. By choosing the right anti-static brush and customising it to your needs, you can effectively discharge static electricity from plastic surfaces and protect sensitive equipment and products.
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Purchase a 'static eliminator' or 'deionizing bar'
Static electricity can pose significant challenges in various industries, including plastics manufacturing. The build-up of static electricity can lead to disruptions in operations, degraded product quality, and even safety hazards for workers. To mitigate these issues, the use of static eliminators or deionizing bars is highly effective.
Static eliminators, also known as ionizers, work by removing static charges from objects or surfaces. They are particularly useful in industries that work with non-conductive materials, such as plastics, that are susceptible to static build-up. By eliminating static electricity, these devices prevent issues like sheets sticking to rollers or parts not flowing smoothly on conveyors during manufacturing processes.
When purchasing a static eliminator or deionizing bar, it is important to consider the specific needs of your application. Different types of static eliminators are available, such as the SJ-H Series and SJ-F700 Series offered by KEYENCE America. The SJ-H Series includes a self-diagnosis function that monitors ion generation levels and alerts users when maintenance is required. On the other hand, the SJ-F700 Series offers complete automation of periodic maintenance, ensuring maintenance-free operation and best-in-class static elimination.
Additionally, some static eliminators are equipped with a ""visualizing light" feature, which allows users to instantly determine whether static has been properly eliminated from an object. This feature simplifies operation checks and saves time and effort in removing dirt and particles. It is also important to consider the size of the space where the static eliminator will be used, as bar-type static eliminators are more suitable for larger areas with airborne particles.
When choosing a static eliminator or deionizing bar, it is recommended to consider reputable brands such as Keyence, which offers deionizing equipment and has a strong presence in the industry. By selecting a well-known brand, you can benefit from their expertise, product quality, and customer support. It is advisable to reach out to their local sales representatives or contact their phone support to discuss your specific requirements and find the most suitable solution for discharging static electricity from plastic.
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Increase the humidity
Increasing the humidity can be an effective way to discharge static electricity from plastic. Higher humidity in the environment can help to reduce the build-up of static electricity on plastic surfaces. Here are some ways to increase humidity to dissipate static charge:
Use a Humidifier
One direct way to increase humidity is to use a humidifier in the space where the static-charged plastic is located. This is especially useful in dry environments where the air naturally holds less moisture. By releasing water vapour into the air, a humidifier can raise the humidity level, making it more difficult for static electricity to accumulate on plastic surfaces.
Spray with Water
Another approach is to introduce moisture directly onto the plastic surface. Try spraying a diluted solution of water and dishwashing soap onto the plastic and leaving it without wiping. This method forms a film that helps control static electricity build-up. This technique is similar to early attempts at static electricity control in aerospace/missile plants. Alternatively, you can simply use water without soap, as suggested by a user who recommended placing the plastic in a tub of water to increase humidity and discharge static electricity.
Use Antistatic Products
Antistatic products are designed to reduce static electricity build-up. For example, antistatic brushes were once used in the photo business to remove static charge from negatives before printing. These brushes can help dissipate static electricity from plastic surfaces. Additionally, antistatic sprays are available, commonly used by vinyl record enthusiasts to remove static charge without leaving a film that could interfere with sound quality.
Pass Over Conductive Brushes
When dealing with plastic film, consider passing it over conductive brushes as you draw out the film. These brushes can collect and equalise the charge from both sides of the plastic, helping to dissipate static electricity. This method is particularly useful when the static charge is desirable for its adhesive properties, such as in kitchen applications.
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Connect a nearby cable to the Earth
To discharge static electricity from plastic, one method is to connect a nearby cable to the Earth. This can be done through a tap, for example. By doing this, a spark discharge should occur, even without touching the plastic with the cable. The length of the spark will indicate the potential difference, with a 1mm spark corresponding to approximately 3000 volts.
This method can help equilibrate any imbalance within the plastic by connecting it to the Earth. It is a simple and effective way to discharge static electricity and can be easily done by anyone with access to a nearby cable and a grounded connection, such as a tap.
It is important to note that when dealing with static electricity and electrical discharges, safety precautions should always be taken to prevent any potential hazards or accidents. Ensure that you are working in a safe environment and are properly grounded before attempting to discharge static electricity using this method.
Additionally, you can also try placing the plastic in a tub of water and then unrolling it to discharge any static electricity. This method may be useful if you are looking for an alternative approach or if you want to avoid the use of cables and sparks.
By following these instructions and taking the necessary safety measures, you can effectively discharge static electricity from plastic using a nearby cable connected to the Earth.
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Frequently asked questions
Try increasing the humidity of the environment, as moisture can help reduce static electricity. Alternatively, you can try using anti-static products such as sprays, brushes, or deionizing bars.
You can try spraying a diluted solution of water and dishwashing soap onto the plastic and leaving it on without wiping. This will form a film that controls static buildup.
You can use anti-static brushes to remove static electricity from plastic. You can also look into deionizing bars or equipment from companies like Keyence.











































