Soundproof structure, sound absorbing panel, and sound adjusting panel
US10988924B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2019 |
| Grant date | Apr 27, 2021 |
| Priority date | — |
| Expiry date | Sep 26, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2607/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
There are provided a soundproof structure, which can have high soundproofing performance in a wide frequency band and in which visual recognition of through-hole can be suppressed, and a sound absorbing panel and a sound adjusting panel using the soundproof structure. A sheet member having a plurality of through-holes passing therethrough in a thickness direction and a sound absorbing body disposed in contact with one main surface of the sheet member are provided. An average opening diameter of the through-holes is 0.1 μm or more and less than 100 μm. Assuming that the average opening diameter of the through-holes is ϕ (μm) and an average opening ratio is σ a parameter A expressed by A=σ×ϕ2 is 92 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.