Multi-layer filter and filter device

Abstract

A multi-layer filter and a manufacturing method thereof, a filter device having the same and a manufacturing method thereof are provided. The multi-layer filter includes a first screen layer, a filter layer, and a second screen layer, wherein the filter layer is disposed between the first screen layer and the second screen layer. The first screen layer and the second screen layer are made of material selected from metal, alloy, or metal oxide. The filter layer is made of material selected from glass fibers, ceramics fibers, metal fibers, alloy fibers, or metal oxide fibers. The multi-layer filter doesn’t include adhesive material. The filter device includes the multi-layer filter and a frame. The multi-layer filter is fixed in the frame. The frame is made of material selected from metal, alloy, or metal oxide. The filter device doesn’t include adhesive material.

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