Patent ID: 8765248

Claim:
A continuous fastener element in a continuous element row formed by continuously molding thermoplastic synthetic resinous monofilament in a coil shape or a zigzag shape, the continuous fastener element comprising: a coupling head; upper and lower leg portions which extend from the coupling head in a width direction of the continuous element row; and a connecting portion which connects the leg portions adjacent to each other in a longitudinal direction of the continuous element row, wherein entire outer peripheral surfaces of the coupling head, the leg portions, and the connecting portion are formed as rough surfaces with a plurality of recesses, the outer peripheral surfaces of the leg portions are each formed to have an average roughness equal to or more than 0.1 μm and equal to or less than 100 μm, a head surface of the outer peripheral surface of the coupling head is formed to have an average roughness which is 90% or less of the average roughness of the outer peripheral surfaces of the leg portions, and the outer peripheral surface of the connecting portion is formed to have an average roughness smaller than the average roughness of the outer peripheral surfaces of the leg portions.