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Composite multilayer filter structures used as subcomponents in general acoustics and electronics

A multi-layer filtration, electronic product technology, applied in the direction of layered products, electrical components, electronic equipment, etc.

Active Publication Date: 2020-10-02
SAATI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Transmission by passing air usually occurs through fabric materials designed to protect, for example, microphones or loudspeakers in general, or electronic equipment from unwanted solid particles, but not from water or other fluids

Method used

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  • Composite multilayer filter structures used as subcomponents in general acoustics and electronics
  • Composite multilayer filter structures used as subcomponents in general acoustics and electronics
  • Composite multilayer filter structures used as subcomponents in general acoustics and electronics

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Embodiment Construction

[0022] Description of the preferred embodiment

[0023] Referring to the above figures, the composite filter structure according to the present invention comprises as a first major component a precision fabric T comprising uniform "meshes" or openings (e.g. made of synthetic monofilaments and having a square mesh configuration ).

[0024] A very uniform mesh structure that is consistent throughout the entire fabric, together with its high mechanical strength and processability, make this precision monofilament fabric material T the ideal solution for filtration base materials.

[0025] These very homogeneous fabric materials have more constant properties than conventional multifilament fabrics in terms of their weight and thickness, surface properties and temperature behavior.

[0026] Uniformity of properties is maintained along the entire fabric roll from batch to batch.

[0027] Furthermore, the fabric T according to the invention is manufactured with very narrow manufact...

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Abstract

A composite multi-layer filter structure for use in filter applications requiring high filtration efficiency of particles on the order of microns and high permeability of filter media and used as a sub-component in acoustic and electronic products, especially microphones and speakers, the composite The multilayer filtration structure includes at least a first polymeric nanoporous membrane layer and at least a second synthetic monofilament precision fabric layer, the first polymeric nanoporous membrane layer being coupled to the second precision fabric layer, thereby providing a filter suitable for preventing even 1- Integral filter media through which 2μm particles and pressurized liquids pass.

Description

[0001] Background of the invention [0002] The present invention relates to a composite multi-layer filter structure particularly but not exclusively for use in acoustic and electronic products in general. [0003] It is well known that in acoustic applications, sound is transmitted by air through porous surfaces, or by vibrations of very thin materials such as thin films or membranes. [0004] Transmission by passing air usually occurs through fabric materials designed to protect eg microphones or speakers in general or electronic equipment from unwanted solid particles, but not from water or other fluids. [0005] Sound propagation through vibration, in turn, is typical in loudspeakers or electronic devices in general, and must also be designed to be immune to water and liquid penetration. [0006] Also known is the fact that sound travels better by passing air than by vibration, so an ideal filter medium should have the acoustic properties of a fabric and the protective pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R1/02H04R1/08H04R25/00
CPCH04R1/023H04R25/654H04R2410/07B32B5/26B32B7/04B32B7/14B32B2250/20B32B2255/02B32B2262/02B32B2262/023B32B2262/0253B32B2262/0261B32B2262/0276B32B2307/10B32B2457/00H04R1/086H04R2499/11
Inventor 卡尔米内·卢奇尼亚诺安娜·穆兹祖克埃莉莎·格里莫尔迪马可·米耶塔保罗·卡诺尼卡
Owner SAATI
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