BACK PAD CAPABLE OF COLOR RENDERING END-OF-LIFE AND MANUFACTURING METHOD THEREOF
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May 9, 2016
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Jan 20, 2016
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Abstract
A back pad capable of color rendering end-of-life includes an absorption layer, a dye capsule layer and a carrier layer. The absorption layer has a surface. The dye capsule layer is disposed on the surface of the absorption layer. The carrier layer is laminated onto the dye capsule layer. The dye capsule layer of the present disclosure can be dissolved to release dyes after water penetrates in the back pad, and the end-of-life of the back pad can be easily determined through a color-rendering effect of the dyes.
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