MUMBAI, India, Sept. 22 -- Intellectual Property India has published a patent application (202647106054 A) filed by Toray Industries, Inc. on September 03, 2026, for Nonwoven For Sound-Absorbing Material, And Sound-Absorbing Material.
Inventors include Kitamura Koji; and Harada Masaru.
The application for the patent was published on September 18, 2026, under issue no. 38/2026.
Abstract: In order to provide a nonwoven for a sound-absorbing material having high sound absorption performance throughout a wide range of frequencies from low frequencies to ultra-high frequencies, this nonwoven for a sound-absorbing material is obtained by stacking nonwoven A and nonwoven B, wherein: the nonwoven A and the nonwoven B are stacked alternatingly in eight or more layers independently; the nonwoven A contains fibers A that have an average single fiber diameter of 0.1-5.0 µm, a single peak appears in a 0.1-5.0 µm histogram distribution range for the single fiber diameter, and a nucleating agent constitutes 0.005-1.000 mass%; the nonwoven A has a basis weight of 10-60 g/m2 and an apparent density of 0.100-0.200 g/cm3; the nonwoven B contains fibers B having an average single fiber diameter of 7.0-30.0 µm and has a basis weight of 10-50 g/m2; and the nonwoven for a sound-absorbing material has a basis weight of 150-650 g/m2.
Disclaimer: Curated by HT Syndication.
