Sheet-film composite sound-absorbing panel and its processing method
A processing method and technology of sound-absorbing panels, which are applied in the field of environmental engineering, can solve problems such as low structural strength, complex micro-hole processing, and narrow sound-absorbing frequency band, and achieve the effects of long service life, convenient processing and wide sound-absorbing frequency band
Active Publication Date: 2021-07-16
BEIJING MUNICIPAL INST OF LABOUR PROTECTION
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Problems solved by technology
[0006] The purpose of the present invention is to provide a sheet-film composite sound-absorbing panel and its processing method to solve the technical problems of narrow sound-absorbing frequency band, low structural strength and complicated micro-hole processing of single-layer micro-perforated panels to a certain extent.
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[0034] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the system or component referred to must have a specific orientat...
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Abstract
The invention provides a plate-film composite sound-absorbing panel and its processing method, which relate to the technical field of environmental engineering and solve the problems of narrow sound-absorbing frequency band, small structural strength and complicated micro-hole processing of single-layer micro-perforated panels to a certain extent. technical problem. The sheet-film composite sound-absorbing panel provided by the present invention includes a substrate, an adhesive layer, and a film layer; the thickness of the substrate is 0.2mm-15mm, and a plurality of through holes penetrating the thickness direction are opened on the substrate, and the equivalent hydraulic power of the plurality of through holes is The diameter is not less than 1.0 mm; the film layer is bonded to the substrate through the adhesive layer, and the film layer covers the through hole; the position of the film layer corresponding to the through hole is formed with a gap.
Description
technical field [0001] The invention relates to the technical field of environmental engineering, in particular to a plate-film composite sound-absorbing panel and a processing method thereof. Background technique [0002] At present, the control methods for noise mainly include sound absorption, sound insulation and sound elimination, and sound-absorbing materials play an important role in the above three methods. Traditional resistive sound-absorbing materials face problems such as insufficient low-frequency sound-absorbing performance and poor weather resistance. However, the micro-perforated plate formed by piercing a large number of micro-holes on the thin plate relies on the resonance between the structure and the sound wave to consume sound energy to achieve sound absorption. , has the characteristics of no need to fill porous materials, light weight, excellent weather resistance, and no secondary pollution. It is widely used in many fields such as construction, indus...
Claims
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IPC IPC(8): B32B7/12B32B3/24B32B3/12B32B15/04B32B15/14B32B27/02B32B27/36B32B15/085B32B15/082B32B15/08B32B15/10B32B9/00B32B9/04B32B17/10B32B17/12B32B21/08B32B21/10B32B27/32B32B27/30B32B27/12B32B27/06B32B17/06B32B21/04B32B38/00B32B38/04B32B37/12
CPCB32B3/12B32B3/266B32B7/12B32B9/005B32B9/04B32B9/041B32B9/045B32B9/047B32B15/04B32B15/043B32B15/08B32B15/082B32B15/085B32B15/10B32B15/14B32B17/06B32B17/061B32B17/067B32B21/04B32B21/08B32B21/10B32B27/06B32B27/12B32B27/304B32B27/32B32B37/1284B32B38/0004B32B38/04B32B2038/045B32B2262/0276B32B2307/10B32B2307/5825
Inventor 蒋从双李贤徽肖伟民
Owner BEIJING MUNICIPAL INST OF LABOUR PROTECTION