Hairpiece, hair extension structure, and hair extension method

Abstract

Disclosed are a hairpiece, a hair extension structure, and a hair extension method that attaches a fake-hair bundle to a root position of a real-hair bundle to complete a hair extension. The hairpiece includes an inwardly folded fixing strip having fake-hair compositions with an upper end connected to the fake-hair bundle, and a thermosetting layer pre-combined with an inner side of the fixing strip. The hair extension structure has both fixing strip and thermosetting adhesive layer inwardly folded and the thermosetting adhesive layer covered and adhered onto both upper and lower sides of the real-hair bundle. The hair extension method includes measuring a user's head, preparing equal-division marks, grabbing the real-hair bundle according to the equal-division marks, covering and gluing the thermosetting adhesive layer of the hairpiece onto the real-hair bundle, and heating, melting, and solidifying the thermosetting adhesive layer to complete the hair extension structure of the hairpiece.

What is claimed is: 
     
         1 . A hairpiece, provided for adhering a fake-hair bundle to a root position of a real-hair bundle of a user's hair to complete a hair extension by the hairpiece, and the hairpiece comprising:
 a fixing strip, being a soft and inwardly folded strip;   a fake-hair bundle, composed of a plurality of fake-hair compositions, and an upper end of the fake-hair bundle being coupled to the fixing strip; and   a thermosetting adhesive layer, pre-combined with an inner side of the fixing strip, and   glued to the fixing strip after the thermosetting adhesive layer and the fixing strip are folded altogether.   
     
     
         2 . The hairpiece as claimed in  claim 1 , wherein the fixing strip is a strip formed by braiding the upper ends of the plurality of fake-hair compositions of the fake-hair bundle altogether. 
     
     
         3 . A hair extension structure of a hairpiece, provided for adhering a fake-hair bundle to a root position of a real-hair bundle of a user's hair to complete a hair extension by the hairpiece, and the hairpiece comprising:
 a fixing strip, being a soft and inwardly folded strip;   a fake-hair bundle, composed of a plurality of fake-hair compositions, and an upper end of the fake-hair bundle being coupled to the fixing strip;   a thermosetting adhesive layer, pre-combined with an inner side of the fixing strip, and   glued to the fixing strip after the thermosetting adhesive layer and the fixing strip are folded altogether;   wherein, the thermosetting adhesive layer and the fixing strip of the hairpiece are folded altogether, so that the thermosetting adhesive layer is covered and adhered onto both upper and lower sides of the real-hair bundle.   
     
     
         4 . The hair extension structure of a hairpiece as claimed in  claim 3 , wherein the fixing strip is a strip formed by braiding the upper ends of the plurality of fake-hair compositions of the fake-hair bundle altogether. 
     
     
         5 . A hair extension method of the hairpiece as claimed in  claim 1 , provided for adhering a fake-hair bundle to a root position of a real-hair bundle of a user's hair to complete a hair extension by the hairpiece, and the hair extension method comprising the steps of:
 (a) measuring the user's circumference within a hair extension range of a row using a head caliper;   (b) marking a plurality of equal-division marks in the hair extension range of the row by using a calibration of the head caliper based on to the head circumference measured in the step (a);   (c) grabbing a real-hair bundle between two adjacent equal-division marks in the hair extension range of the row, and combing the real-hair bundle;   (d) folding the fixing strip and the thermosetting adhesive layer of the hairpiece altogether, so that the thermosetting adhesive layer is covered onto both upper and lower sides of the real-hair bundle;   (e) heating the fixing strip and the thermosetting adhesive layer by a heater, so that the thermosetting adhesive layer is melted, and then solidified, and finally fixed to the real-hair bundle;   (f) repeating the steps (b) to (e) for the plurality of hair extension ranges of each row disposed at a spacing below the hair extension range of the row.   
     
     
         6 . The hair extension method of a hairpiece as claimed in  claim 5 , wherein the head caliper of the step (a) is a soft tape measure, and the head caliper measures the head circumference in a first-row hair extension range from positions approximately 2˜3 cm above both ears of the user and transversally around the back of the user's head; and the implementation for the plurality of hair extension ranges of the step (f) is taken place below the first-row hair extension range. 
     
     
         7 . The hair extension method of a hairpiece as claimed in  claim 6 , wherein when the head circumference in the first-row hair extension range is 35˜40 cm, each of the equal-division marks has a spacing of 1 cm; when the head circumference in the first-row hair extension range is 28˜35 cm, each of the equal-division marks has a spacing of 0.8 cm; and when the head circumference in the first-row hair extension range is smaller than 28 cm, each of the equal-division marks has a spacing of 0.6 cm. 
     
     
         8 . The hair extension method of a hairpiece as claimed in  claim 5 , wherein the equal-division marks are color pigments dotted onto the user's scalp. 
     
     
         9 . The hair extension method of a hairpiece as claimed in  claim 5 , wherein the heater of the step (e) is an ultrasonic heater. 
     
     
         10 . The hair extension method of a hairpiece as claimed in  claim 5 , wherein the equal-division marks of the hair extension range of each row and the equal-division marks of the hair extension ranges of the row above or below are disposed at staggered positions with respect to each other; and the real-hair bundle between two adjacent equal-division marks in the hair extension range of each row are coupled to the hairpieces, so that the hairpieces are staggered and coupled to each real-hair bundle of the user's hair.