A continuous strand for a wig extended in a longitudinal direction thereof, wherein
- the continuous strand is in a form of:
- a simple strand that has an appearance formed by rotational twisting produced by rotations of a plurality of filaments and is extended in the longitudinal direction;
- or
- a composite strand that has an appearance formed by cross-twisting by revolutions of a plurality of simple strands, braiding, or cross-twisting and braiding the plurality of simple strands,
- each of the plurality of simple strands constituting the composite strand comprises 40 to 4,000 filaments of a single type or plural types,
- wherein each of the plurality of filaments comprises one of an amorphous organic polymer, a semi-crystalline organic polymers and a polymer alloy,
- the simple strand has a cross-sectional shape of a circular shape, an oval shape, and a polygonal shape selected from a triangle, a quadrangle, and a pentagon, and
- when the cross-section shape is circle or oval, a diameter of the circle or a longest diameter of the oval is in a range of 0.2 cm to 3.0 cm, and
- when the cross-section shape is a polygon, a length of at least one side of the polygon is in a range of 0.2 cm to 3.0 cm,
- the simple strand further comprises:
- a pencil normal (PN) section extending along the longitudinal direction thereof and having a first cross-sectional area of a constant size;
- two first pencil tapering (PT) sections respectively extending from both ends where PN section ends and are tapered in such a way that cross-sectional areas decrease;
- two second PT sections respectively extending from ends of the two first PT sections having decreased cross-sectional areas and are tapered in such a way that the decreased cross-sectional areas increase again;
- and
- two pencil connection (PC) sections connecting a first PT section and a second PT section that are adjacent to each other, and having a second cross-sectional area of a constant size,
- when a section of bilateral symmetry including the PN section and the two first PT sections respectively linked to both ends of the PN section is set as one cycle, each of the simple strand and the composite strand repeatedly comprises two or more multiple cycles, each of the one cycles which are adjacent to each other is connected by the PC section,
- the first cross-sectional area is larger than the second cross-sectional area, and
- when a part of the one cycle, having only one first PT section and including all or part of the PN section of the one cycle, is cut to separate the part of the one cycle from each of the simple strand and the composite strand, and
- when lengths of the filaments thus separated are measured in the longitudinal direction while maintaining textures and waves imparted to separated filaments, a difference Ld between a length of the longest filament Lmax and a length of the shortest filament Lmin, and a length Lpt of the first PT section included in the separated part of the one cycle are not equal to each other.