| 摘要 |
PURPOSE:To acquire a shapable property, a good flexibility, and adaptability for everywhere as a whole, by burying and fixing a conductive fine wire net in a polyolefine resin layer to be the core, and laminating transparent plastic sheets on both sides of the polyolefine resin layer. CONSTITUTION:A transparent plastic sheet 1 is to give a strength and a shapable property to a filter F. In a net 4 consisting of conductive fine wire, the resin of a polyolefine resin layer 3 penetrates as if the net 4 is buried in the layer 3. The layer 3 is to keep and fix a specific form of the net 4, and its thickness is adequate to be 30-70mum at one side of the net 4 to keep the strength and transparency. The roughness of the net 4 is made at 100-300 meshes to avoid a moire on the image. Moreover, it is preferable to apply a black resin over the screen to reduce a flickering of the image.
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