抄録
Recently, copper foil is attracting attention due to the influence of Internet of Things because it has characteristics as a high electrical conductivity. Copper foil is mass-produced by a roll-to-roll production system in which a number of rollers can continuously perform from rolling to winding. However, troughs and wrinkles are generated in the copper foil in the transport process. In order to solve this problem, we have experimentally verified whether a web wrinkle theoretical model can be applied. Using two kinds of copper foils with different materials and thicknesses, the wrinkle generation experiment was conducted. According to the experimental results, when the velocity of the roller was increased, the copper foil B generated wrinkles in the high tension region. Comparing the experimental results with the theoretical prediction model, it was found that both copper foils went in the range of theoretical values. However, the theoretical value and the experimental value are different for copper foil B. This is thought to be due to the difference in the elongation of PET film and copper foil. In the misalignment angle exceeded θ = 0.6 deg from the trough photographs, the size and number of troughs did not change.
