Quality Die-Cutting EMI Shielding Foam Manufacturing
- Custom EMI Shielding Foam For Die-Cutting.
- IATF 16949:2016 Certification
- Over 20 years of Die Cutting experience
- Various materials available
- Product Details
- Application Overview
- Material Insights
- EMI Shielding Foam blocks signals really well, keeping devices safe from interference.
- The material stays in shape over time, ensuring long-lasting performance.
- It resists rust and wear, working well in different environments.
- It’s fire-safe and eco-friendly, meeting important safety and environmental standards.
- Approved for green standards like RoHS, making it safe for the environment.
Jiepu provides die-cutting services for the following areas:
-
- Automotive Electronics: EMI foam is used for shielding and grounding seams and holes, offering excellent conductivity and shielding in automotive electronics.
- Aerospace: EMI foam helps reduce electromagnetic wave propagation and provides structural support, thanks to its lightweight nature.
- Portable Electronics: In smartphones and tablets, EMI foam shields and absorbs microwaves, helping devices stay lightweight and compact.
- Military and Security: Used in military communications, EMI foam protects sensitive systems from electromagnetic interference, ensuring reliable operation.
- Construction: EMI foam is applied in walls and roofs to shield buildings from external electromagnetic waves, improving internal environments.
- Medical Devices: EMI foam protects sensitive medical equipment, like MRI and CT scanners, from electromagnetic interference, ensuring their proper functioning.
- Industrial Equipment: In industrial automation, EMI foam reduces interference between devices, enhancing system stability and reliability.
- Consumer Electronics: Used in TVs, speakers, and home appliances, EMI foam helps prevent electromagnetic leakage and shields users from radiation.
Jiepu recommends the following commonly used die-cutting materials for EMI Shielding Foam:
- Open-Cell Polyurethane Foam: This foam, ranging from 0.5mm to 16mm in thickness, is treated with copper-nickel for better conductivity and corrosion resistance.
- Conductive Fillers: High-conductivity particles like silver-coated aluminium or pure nickel are added to improve EMI shielding and environmental sealing.
- Metal Materials: Metals such as beryllium copper and stainless steel are used directly for electromagnetic shielding.
- Filler Materials: Conductive fillers like metal powders and fibres are added to non-conductive bases to make the material conductive.
- Surface Coatings and Conductive Paints: Electroplating and other methods apply metal coatings to improve conductivity.
- Conductive Rubber: Rubber filled with metal particles provides excellent shielding, conductivity, and moisture protection.
- Conductive Fabrics: Fabrics, often polyester, are coated with metal to create conductive materials for EMI shielding.
- Special Absorbing Materials: Materials like BandSorb® are used for noise reduction in tight spaces, effective for frequencies between 5 MHz to 40 GHz.
Custom Die-Cutting with EMI Shielding Foam
At JIEPU, we specialise in customised die-cutting solutions tailored to your specific needs. Whether for automotive electronics, security systems, or other industries, we provide high-precision services to ensure your product requirements are met. We offer a wide selection of materials, including EMI Shielding Foam, which effectively protects against electromagnetic interference.
Our services include personalised design, accurate cutting, and fast delivery, suitable for both small and large production runs. With JIEPU, you can enhance product quality, reduce costs, and speed up time to market. Let us help you stay ahead with our expert solutions.
Die Cutting Process for EMI Shielding Foam
Jiepu Certified Excellence in Die-Cutting Services
Jiepu proudly holds ISO9001, ISO14001, and IATF 16949 certifications, ensuring top-notch quality and responsible operations.
With ISO9001, we guarantee consistent high-quality die-cut products by continuously improving our processes. Our ISO14001 certification reflects our commitment to environmental responsibility—reducing waste and energy use. Finally, IATF 16949 proves our ability to meet the strict standards of the automotive industry, ensuring reliable supply chain management and product consistency.
Simple Guide to EMI Shielding Foam Samples and Quotes
At Jiepu, we have over 20 years of die-cutting expertise. Here’s how we simplify the process for you:
1. Share Your Needs
Tell us about your project—material type, shielding performance, and how it will be used.
2. Request a Sample
We offer quick prototypes for testing. Get your sample in just a few days.
3. Customised Solutions
Need something unique? We design tailored materials, combining EMI shielding with other features like thermal insulation.
4. Easy Quoting
Provide your specifications, and we’ll calculate costs for materials and processing before sending a clear quote.
5. Test for Approval
We create samples based on your specs so you can test and verify before production.
6. Move to Production
Once the sample meets your needs, place an order for bulk production.
7. Quality You Can Trust
Our strict quality checks and certifications, including RoHS, ensure reliability.
8. Support You Can Count On
Enjoy professional, timely after-sales service whenever you need it.
9. Store Smartly
Keep EMI foam at 23±2°C and 65±5% humidity. It stays fresh for up to 1 year.
Let Jiepu handle the details while you focus on your business!
EMI Shielding Foam is a material designed specifically to block electromagnetic interference (EMI). It plays a key role in ensuring electronic devices work properly without being disrupted by external signals. The following are common EMI Shielding Foam：
Fabric-Over-Foam (FoF)
This versatile material combines conductive fabric, conductive foam, copper foil, and pressure-sensitive adhesive. It’s widely used in mobile phones and similar devices where conductivity and strong bonding are both essential.
Conductive Foam Pads
These pads, made by coating or impregnating foam with conductive materials, are flexible and compressible. They are perfect for sealing gaps and preventing EMI and radio frequency interference (RFI).
X-Y-Z Conductive Foam
This foam provides conductivity in all directions and is a cost-effective solution for shielding applications requiring comprehensive electrical performance.
Fabric Over Foam Gaskets
Combining soft fabric with conductive materials, these gaskets achieve excellent shielding performance of up to 100 dB with very low surface resistance, making them ideal for demanding shielding tasks.
Each of these variations showcases the adaptability of EMI Shielding Foam to different needs. At Jiepu, we specialise in die-cutting services that meet the precise requirements of such advanced shielding materials.
When assessing the shielding effectiveness of EMI (Electromagnetic Interference) Shielding Foam, a few important factors are considered:
Shielding Effectiveness (SE) is the main indicator, usually measured in decibels (dB). The higher the SE value, the better the material’s shielding performance. To put it simply: SE < 10 dB means poor performance, 10-30 dB is fair, 30-60 dB is average, 60-90 dB is good, and over 90 dB is excellent.
Reflection Loss (R) refers to the energy lost when electromagnetic waves bounce off the foam’s surface. The higher the loss, the better the shielding. This can be calculated using a formula that takes into account the material’s reflectivity.
Transmission Loss (T) measures the energy lost as electromagnetic waves pass through the material. The greater the loss, the better the material at blocking interference. This is calculated using the material’s transmission rate.
Absorption Loss (A) is the energy lost when the foam absorbs the electromagnetic waves. This is also an important factor in determining the material’s overall shielding effectiveness.
The frequency range of the test is crucial because the foam’s shielding ability can vary at different frequencies. It’s usually tested from low to high frequencies to see how it performs across the spectrum.
Other material characteristics such as conductivity, thickness, surface resistance, and vertical resistance also affect how well the foam shields against interference. For example, combining conductive sponges with copper foil can improve performance.
Advanced testing techniques such as ion beam spectroscopy, electron microscopes, and various types of probes help accurately measure the material’s shielding effectiveness.
Lastly, network analysis using tools like Vector Network Analyzers (VNA) allows for precise measurements of reflection and transmission shielding efficiency, further helping to determine the material’s suitability for different applications.
At Jiepu, we offer die-cutting services, and with over 22 years of experience, we have helped brands like Apple, Samsung, and Foxconn enhance their products with high-quality die-cut materials.
To ensure the long-term stability of EMI Shielding Foam’s performance, a few methods can be applied.
One way is by using ultra-stable films made from conductive metal-organic frameworks (cMOFs). These materials can maintain high shielding effectiveness (SE), even after long-term exposure, high temperatures, repeated bending, or even immersion in artificial seawater.
Another approach involves improving heat stability. Adding reduced graphene oxide (rGO) to polyimide (PI) foam boosts its thermal stability, making the foam’s EMI shielding effectiveness more reliable over time. In fact, the temperature at which the foam loses 5% of its weight rises significantly with the addition of rGO.
Optimising the foam or film structure is also crucial. Introducing foam structures in the absorbing layer helps adjust impedance matching, reducing the reflection of electromagnetic waves on the surface. Additionally, the foam’s microstructure creates multiple scattering points, increasing the path length of the waves and improving their attenuation.
Lastly, natural antioxidants like melatonin and tea polyphenols can be used to protect materials such as Ti3C2Tx MXene from degradation, further improving the stability of the shielding performance.
At Jiepu, we provide die-cutting services that can help tailor materials to your specific needs, ensuring high-quality, reliable solutions.
To correctly install and use Jiepu EMI shielding foam in electronic devices, start by choosing the right material and thickness based on your device’s needs. Check that the foam fits well with the specific parts of your device to ensure optimal shielding.
If you’re using it on signal wires, confirm the type of wires and interfaces to make sure everything matches, including the polarity. Handle the foam carefully to avoid scratches or damage during installation.
For multiple foam pieces on the same cable, arrange them with enough space to prevent interference. After installation, double-check that all connections are secure and stable.
Before applying the foam, clean the surfaces to ensure good contact. When removing protective film, peel one side carefully, align the foam, and press down gently to avoid bubbles. If bubbles do appear, smooth them out carefully without damaging the foam.
Apply some pressure to secure the foam firmly and leave it for a while to settle.
Following these steps ensures the foam works effectively to reduce interference. At Jiepu, we can provide tailored die-cutting services to perfectly fit your shielding requirements.