Patent ID: 8501317
Filing Date: 2013-08-06
Classification: A41D,D01D,D01F,D03D,D04B,D06M,D10B,Y10T

Abstract:
1. Cloth in which air permeability is variable by energization, the cloth comprising: a fibrous object comprising composite fibers, the composite fibers comprising: an electrical-conductive polymeric material formed of a polymer which is electrically conductive; and a material different from the electrical-conductive polymeric material, the different material being in direct contact with the electrical-conductive polymeric material; electrodes which are attached to the fibrous object, and through which an electric current flows to the electrical-conductive polymeric material; and a power supply which applies the electric current to the electrical-conductive polymeric material through the electrodes, wherein the composite fibers have a structure in which the material different from the electrical-conductive polymeric material is stacked on at least a part of a surface of the electrical-conductive polymeric material, or a structure in which either one of the electrical-conductive polymeric material and the material different from the electrical-conductive polymeric material penetrates the other material in a longitudinal direction, wherein when the power supply applies the electric current to the electrical-conductive polymeric material, the electrical-conductive polymeric material shrinks, and the electrical-conductive polymeric material causes a length difference from the material different from the electrical-conductive polymeric material, and wherein the composite fibers are arranged such that an air permeability or a sound absorption of the cloth is changed when the power supply applies the electric current.