Preassembled Synthetic Hair Assembly and Manufacturing Method Thereof

Abstract

The present disclosure relates to a preassembled synthetic hair assembly featuring distinct hairstyles with predefined outer contours and an optimized manufacturing process. The disclosure includes obliquely cut ends on both sides of the hair bundle at specific angles (α, β) relative to the strand length, facilitating natural layering and gradient length effects. A central fastening mechanism secures the bundle, which is then folded to achieve a desired outer contour like a waterfall, convex arc, or inverted teardrop shape. Customization is achieved by adjusting folding directions, strand length ratios (50%≤La/Lb≤80%), and incorporating additional fastening elements for varied aesthetic outcomes.

What is claimed is: 
     
         1 . A preassembled synthetic hair assembly comprising:
 a bundle of synthetic hair strands having both oblique-cut ends, the surfaces of which are inclined at predetermined angles (α and β) relative to the length direction of the strands;   a first fastening member for securing the bundle at a central region; and   a folded configuration formed by doubling the bundle at the secured region to create a predetermined outer contour.   
     
     
         2 . The assembly of  claim 1 , wherein:
 the surfaces of both oblique-cut ends are symmetrically arranged with the predetermined angles, which are equal and satisfy 20°<α=β<90°;   the ratio of shortest (La) to longest (Lb) strand lengths of the bundle satisfies 50%≤La/Lb≤80%; and   the bundle is folded toward the shortest strand side (La) to form the predetermined outer contour, which is of a cascading contour with a predominantly linear or concave arcuate hemline configuration.   
     
     
         3 . The assembly of  claim 1 , wherein:
 the surfaces of both oblique-cut ends are symmetrically arranged with the predetermined angles, which are equal and satisfy 20°<α=β<90°;   the ratio of shortest (La) to longest (Lb) strand lengths satisfies 50%≤La/Lb≤80%; and   the bundle is folded toward the longest strand side (Lb) to create the predetermined outer contour with convex arcuate hemline configuration, inverted teardrop, or Sweetheart shape.   
     
     
         4 . The assembly of  claim 1 , wherein the strands are combed at middle and lower regions to enhance a three-dimensional undulating configuration. 
     
     
         5 . The assembly of  claim 3 , further comprising:
 blended and combed strand ends;   stretched strand ends for fluffy appearance; and   a ponytail-like contour in the middle-lower region after folding.   
     
     
         6 . The assembly of  claim 5 , further comprising:
 a second fastening member securing the folded bundle's neck region; and   a buttonhole-like structure at the head portion with a ponytail-like lower contour.   
     
     
         7 . The assembly of  claim 1 , wherein:
 the surfaces of both oblique-cut ends are parallel with α≠β and α+β=180°. blended and combed strands form a mixed contour; and   stretched ends create the pre-determined outer contour, which is of a contour of density gradient changes with arc-shaped convex hemline configuration.   
     
     
         8 . The assembly of  claim 7 , further comprising a second fastening member securing the neck region to form a buttonhole-like head structure with arc-shaped convex hemline configuration. 
     
     
         9 . The assembly of  claim 6 , wherein:
 the fastening members are elastic bands; and   the assembly is attachable to a packaging hook via the first fastening member.   
     
     
         10 . The assembly of  claim 8 , wherein:
 the fastening members are elastic bands; and   the assembly is attachable to a packaging hook via the first fastening member.   
     
     
         11 . A method for manufacturing a preassembled synthetic hair assembly, comprising:
 obliquely cutting both ends of a synthetic hair bundle to form inclined surfaces;   combing strands to establish a pre-determined outer contour;   shaping strand ends through stretching;   securing a central region with a first fastening member; and   folding the bundle at the secured region to form the assembly.   
     
     
         12 . The method of  claim 11 , wherein end shaping includes thermal stretching to achieve predetermined length and tip configuration. 
     
     
         13 . The method of  claims 11 , further comprising securing a second fastening member at the folded bundle's neck region to create a buttonhole-like structure. 
     
     
         14 . The method of  claim 13 , wherein:
 the inclined surfaces are symmetrically cut with α=β (20°<α, β<90°) and 50%≤La/Lb≤80%; and   folding occurs toward the shortest strand side (La) to form a cascading contour with a predominantly linear or concave arcuate hemline configuration.   
     
     
         15 . The method of  claim 13 , wherein:
 the inclined surfaces are symmetrically cut with 20°<α=β<90°) and 50%≤La/Lb ≤80%; and   folding occurs toward the longest strand side (Lb) to create a contour with convex arcuate hemline configuration, inverted teardrop, or sweetheart shape.   
     
     
         16 . The method of  claim 13 , wherein:
 the inclined surfaces are parallel with α≠β and α+β=180°;   strands are blended/combed for mixed contour; and   ends are stretched to form a contour of density gradient changes with arc-shaped convex hemline configuration.