Material Performance Test

Effectiveness of MG Vest in Preventing PM Malfunctions in Wireless Devices

The silver fiber material "MGnet," which is created by coating nylon with silver and knitting it into a honeycomb mesh, was developed by the predecessor company, Freesia Co., Ltd. [Figure 1]. Silver has properties such as high electrical and thermal conductivity, providing electromagnetic shielding, insulation, and heat dissipation effects. Because MGnet is formed in a honeycomb mesh, it ensures uniformity in the silver’s properties within the material. Additionally, it offers advantages such as being lightweight, flexible, and highly breathable. The MG Vest utilizes MGnet’s effectiveness as an electromagnetic shielding material, applying four layers of MGnet throughout the entire protective garment. MGnet’s electromagnetic shielding performance has been confirmed to be effective against electric fields generated nearby in the 100kHz to 1GHz range, as well as electromagnetic waves incident from a distance in the 3GHz to 9GHz range.

June 2004: Patent acquired in the United States (Patent No. US6,855,883,B1)

March 2007: Patent acquired in Japan (Patent No. 3932205)

▲Figure 1: Silver Fiber Material "MGnet": The MG Vest uses two layers of MGnet throughout the entire protective garment.