Significant Improvement in Radio Wave Permeability for Communication Components: Low Dielectric Constant (Low-Dk) Glass Cloth
Making radio wave pathways smoother. Nittobo’s low-Dk glass cloth revolutionizes the permeability of increasingly sophisticated communication and radar equipment.
Nittobo's "Low-Dk Glass Cloth" is a product made from specialized glass fibers with a lower dielectric constant (Dk) and dissipation factor (Df) compared to conventional E-glass. In modern communication and radar technologies, the radio wave permeability of components is crucial. By using this product as a reinforcing material for FRP (Fiber Reinforced Plastics), it is possible to significantly enhance the radio wave permeability of communication-related components, such as radomes.A key feature of this material is its ability to maintain processability and mechanical properties nearly identical to those of standard E-glass cloth, while providing superior electrical characteristics. It also shows excellent compatibility with various resins, including epoxy and cyanate ester resins, allowing for integration using existing molding processes. This high-performance material offers a new solution for demanding environments—such as next-generation high-speed communications and the aerospace industry—where both precise signal transmission and high structural strength are required.
basic information
【Basic Structure】 ・Cloth products made from low-dielectric glass with minimized Dk and Df. 【Key Features】 ・Electrical Properties: Achieves lower $Dk$ and $Df$ compared to E-glass. ・Processability: Maintains excellent processability and mechanical properties equivalent to E-glass cloth. ・Resin Compatibility: High affinity with epoxy, cyanate ester, and other resins. 【Product Specifications】 ・Weave: Satin Weave ・Weight: 100gsm, 270gsm ・Form: Cloth / Fabric ※Specifications are subject to change without notice.
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Applications/Examples of results
【Applications】 ・Radomes: Protective covers for antennas that minimize radio wave attenuation. ・Millimeter-wave Radar Components: Improving the sensitivity of high-frequency radars essential for autonomous driving technology. ・Aerospace Structural Components: Parts for aircraft and spacecraft that require both high mechanical strength and radio wave permeability. 【Key Takeaways】 ・By replacing standard E-glass (Dk4.3) with this product (Dk3.6), the radio wave permeability of the overall component can be significantly improved. ・Due to its high resin compatibility, it is increasingly being applied to components with complex shapes and structures requiring high reliability.
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[Announcement] We will be exhibiting at the "Automotive Technology Exhibition 2026 NAGOYA"!
We will be exhibiting at the "Automotive Technology Exhibition 2026 NAGOYA" (Booth Number: 312) held at Aichi Sky Expo (Aichi Prefectural International Exhibition Center). At our booth, we will propose our unique fiberglass products and technologies that address the challenges of next-generation mobility development, such as electrification, lightweighting, and multi-materials in automobiles. ■ Main Exhibits ● High-Strength Thin-Walled GFRP → Achieves significant weight reduction and insulation through metal substitution. It also possesses non-combustibility and corrosion resistance, contributing to extended EV range and improved safety. ● Thermoplastic Woven Fabric → Excellent in impregnation and deep drawing during molding, making it ideal for complex shapes required in EV battery peripheral components. ● Dot Coating Technology → Our unique processing technology that enhances molding efficiency through hot melt application while maintaining the inherent breathability and flexibility of the substrate, adding various functions such as deodorization and antibacterial properties. ● Low Dielectric Glass Fabric → Features low dielectric properties (Low Dk/Df) with minimal transmission loss, contributing to improved communication environments and sensing accuracy for ADAS and autonomous driving. We sincerely look forward to your visit.
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[Notice] We will be exhibiting at the "Automotive Technology Exhibition 2026 YOKOHAMA"!
We will be exhibiting at the "Automotive Engineering Exposition 2026 YOKOHAMA" (Booth No. 299) held at Pacifico Yokohama starting tomorrow. At our booth, we will present our unique fiberglass products that address the challenges of next-generation mobility development, such as electrification, lightweighting, and multi-materialization of automobiles. ■Main Exhibits ● High-Strength Thin GFRP → Achieves significant weight reduction and insulation through metal replacement. It also possesses non-combustibility and corrosion resistance, contributing to extended EV range and improved safety. ● Thermoplastic Woven Fabric → Excellent in impregnation and deep drawing during molding, making it ideal for complex shapes required in EV battery peripheral components. ● Dot Coating Technology → Our unique processing technology that enhances molding efficiency through hot melt application while maintaining the inherent breathability and flexibility of the substrate, adding various functions such as deodorization and antibacterial properties. ● Low Dielectric Glass Fabric → Features low dielectric properties (Low Dk/Df) with minimal transmission loss, contributing to improved communication environments and sensing accuracy for ADAS and autonomous driving. Through these advanced materials, we will support the evolution of next-generation vehicles. We sincerely look forward to your visit.
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Nittobo Group: Creating a Healthy and Comfortable Future The Nittobo Group is dedicated to enhancing social value and contributing to a prosperous society. Under our long-term vision, "Big VISION 2030," we strive to be a Global Niche No. 1 provider in "Environment & Energy," "Digitalization," and "Health & Safety." Combining a century of expertise in glass fiber, functional chemicals, and textiles, we serve as the best partner for our customers' product development.