Oyaide Electric will release a new noise suppression sheet "NRF-005L" using PULSHUT® (highly functional non-woven fabric) developed by Asahi Kasei Corporation. Following the tape type "NRF-005T," which has been well-received since its release in 2022, the new "A4 size sheet type" has been requested by many customers.
While NRF-005T is suitable for wrapping electric wires and attaching ICs and electronic components, NRF-005L is suitable for attaching to large areas such as inside and outside of chassis and around the base of audio equipment.
Once again, our emphasis is on avoiding "no fish in a clear water". Audio accessories that claim to absorb noise must be carefully designed, or they may filter out the nuances and realism that should be present in music and video, and cause the music or video to lose its life.
The NRF series solves the dilemma of noise reduction and original sound fidelity, and offers a revolutionary and innovative product for all audiophiles.
Features
PULSHUT ® : 5 Important Features
High performance non-woven fabrics that do not contain any magnetic material.
Effective against noise in a wide frequency range from MHz to GHz bands.
Substrate is as thin as 0.05 mm and extremely lightweight.
Excellent flexibility and can be attached to uneven surfaces.
Both the sheet surface and the cut surface have high insulation properties, so it can be attached to conductive surfaces.
What is "PULSHUT®" ?
Conventional noise suppression materials have the property that the amount of noise suppression can be controlled by adjusting the magnetic material and the amount of magnetic material used. They have high magnetic loss characteristics and achieve their noise-absorbing effect by converting electromagnetic noise into heat. On the other hand, the impedance in certain frequency bands increases, which also affects the original sound waveform. This is similar to the properties of ferrite cores. This means that, as with EMC/EMI countermeasures, appropriate noise countermeasures were necessary for audio as well.
PULSHUT® is a highly functional non-woven fabric with a special surface treatment that provides high noise suppression performance despite its non-magnetic nature. This characteristic makes it possible to suppress only the noise component while minimising the effect on the original sound waveform.
Reduced environmental impact by complying with RoHS Directive
The content of environmentally hazardous substances (lead, mercury, hexavalent chromium, cadmium, etc.) is below the limit of measurement and complies with the RoHS Directive.
Excellent noise absorption with simple use
It is very easy to use. By attaching it to the input/output terminals of audio equipment, around noise-prone areas, and on cables and plugs, it exerts a highly effective noise suppression effect. It lowers the noise floor without deforming or distorting the waveform of the original sound, and improves delicate expression with fewer incidental sounds. In addition, the effect on video is to reduce blurring of contours and increase the clarity of colors. In sound quality, the S/N ratio is improved, the center of gravity is stabilized, the localized sound image is brought into focus, the sense of noise filling the air space is eliminated, and the sense of sound field is expanded.
Cut and paste, Flexible Workability
Please use sharp scissors or cutters to cut the sheet type well. It excels in flexibility and can be affixed to curved surfaces such as cables, offering excellent processability and workability. The acrylic adhesive has reworkable adhesive strength, yet has sufficient holding power and can be reattached many times. The protective layer is made of PET resin, which remains stable even after cutting, allowing the non-woven fabric to be attached without fraying. The key to a beautiful finish is to apply it while applying light tension.
For Other than Audio Applications
arious applications as a high-frequency noise suppressant are expected.
*Example: "Noise suppression for devices that dislike magnetism," "As a lightweight and thin noise suppression material," "High-frequency noise suppression for PCs, smartphones, and game consoles," etc.
Cautions for Use
- Although the product can be used in a wide range of operating temperatures from -20 to 90°C, avoid attaching it to locations where overheating or cooling beyond this temperature is anticipated (CPU, GPU, vacuum tubes, etc.).
- Avoid using the product in such a way as to obstruct heat dissipation, such as by blocking heat dissipation holes in amplifiers or PCs.
- Avoid storing the product in direct sunlight.
- Avoid storing or using the product in high temperature and humidity as much as possible, as the adhesive may deteriorate.
- Wipe off any dust, oil, etc. on the adherend (mating surface) well before applying the adhesive.
- Although reworkable adhesive is used, repeated application and removal will weaken the adhesive.
- The adhesive is designed not to leave adhesive residue, but just to be safe, do not apply it to areas where adhesive residue is likely to be left.
- Although the adhesive can be removed by hand after application, please do not apply it to areas where it may be difficult to peel off.
Specification
Noise Suppression material: PULSHUT®※1
Adhesive surface: Acrylic adhesive (low adhesion on one side)
Size: A4 size (297mm×210mm)
Thickness: Approx. 0.11mm (substrate 0.05mm + adhesive thickness approx. 0.06mm)
Density: 0.8g/cm^3
Surface Resistance: ≧1.0 x 10^12Ω/cm
Volume Resistance: ≧1.0 x 10^12Ω/cm
Tensile Strength: 3.5kgf/cm^3
Operating Temperature Range: -20～90℃
Environmentally Conscious: RoHS compliant, halogen-free, REACH compliant
