Abstract: An elastically deformable braided string whose intermediate part excluding both end areas can deform elastically in the direction of axis under an external pulling force, wherein the intermediate part is divided into/constituted by multiple areas having different tensile moduli in the direction of axis. The above elastically deformable braided string can be applied for various purposes.

Abstract: A elastically deformable string includes an outer layer and a core material placed inside the outer layer, wherein the outer layer has knob parts that are constituted by loosely woven outer layer yarns and elastically deformable, and link parts that are constituted by densely woven outer layer yarns and have a smaller diameter than the knob parts, wherein the loosely woven outer layer yarns are woven more loosely than are the densely woven outer layer using same yarns, and the core material is constituted by a stretchable string and placed inside the knob parts in a slackened and/or meandering state. The elastically deformable string is suitable for shoes, for example, as a shoelace which does not require knots.

Abstract: In the conventional lace with knobby portions having elastic rubber core, there is difference in degree of stretch between both ends and core of the knobby portion. Therefore, there are a portion that is subjected to heavy stretching force and a portion that is subjected to no stretching force, and when large strain is accumulated at the boundary between the portions subjected to different stretching forces and the strain reaches the limit, the lace ruptures. In order to solve the above problem, we provide a lace provided with tubular lace body of elastic material, comprising knobby portions repeatedly placed at intervals, of which diameter vary depending on tension on the knobby portion in an axial direction.

Abstract: In the conventional lace with knobby portions having elastic rubber core, there is difference in degree of stretch between both ends and core of the knobby portion. Therefore, there are a portion that is subjected to heavy stretching force and a portion that is subjected to no stretching force, and when large strain is accumulated at the boundary between the portions subjected to different stretching forces and the strain reaches the limit, the lace ruptures. In order to solve the above problem, we provide a lace provided with tubular lace body of elastic material, comprising knobby portions repeatedly placed at intervals, of which diameter vary depending on tension on the knobby portion in an axial direction.