Method for elastic sweatband and headgear using the same

Abstract

The present invention is an elastic sweatband including a fabric surface, a peak portion and a trough portion, wherein the peak portion and the trough portion are formed in a longitudinal direction of the fabric surface. The peak portion and the trough portion are paralleled and connected to each other. The peak portion and the trough portion are across two ends perpendicular to the longitudinal direction of the fabric surface respectively. When a force is exerted on the elastic sweatband, a partial of vertical height of the peak portion will be converted into the extension length in the longitudinal direction, so as to provide the extension length in the longitudinal direction of the elastic sweatband.

1 . An elastic sweatband, comprising:
 a fabric surface having a peak portion and a trough portion in a longitudinal direction, the peak portion and the trough portion paralleling and connecting to each other, wherein the peak portion and the trough portion are respectively across two ends perpendicular to the longitudinal direction of the fabric surface.   
   
   
       2 . The elastic sweatband of  claim 1 , wherein the cross sectional shape of the peak portion includes a dome shape while the cross sectional shape of the trough portion includes a line segment parallel to the horizontal plane. 
   
   
       3 . The elastic sweatband of  claim 1 , wherein the cross sectional shape of the peak portion and the trough portion include a half circle formed with an arc and two ends, one end of the peak portion are connected to one end of the trough portion, such that the arc of the peak portion and the arc of the trough portion face opposite directions. 
   
   
       4 . The elastic sweatband of  claim 1 , wherein the cross sectional shape of the peak portion includes a rectangular shape while the cross sectional shape of the trough portion includes a line segment parallel to the horizontal plane. 
   
   
       5 . The elastic sweatband of  claim 1 , wherein the cross sectional shape of the peak portion includes a trapezoid shape while the cross sectional shape of the trough portion includes a line segment parallel to the horizontal plane. 
   
   
       6 . The elastic sweatband of  claim 1 , wherein the cross sectional shape of the peak portion includes a triangular shape while the cross sectional shape of the trough portion includes a line segment parallel to the horizontal plane. 
   
   
       7 . The elastic sweatband of  claim 1 , wherein the cross sectional shape of the peak portion includes an irregular form while the cross sectional shape of the trough portion includes a line segment parallel to the horizontal plane. 
   
   
       8 . The elastic sweatband of  claim 1 , wherein the fabric surface encloses a soft material in the longitudinal direction and is made by means of kitting or weaving. 
   
   
       9 . An elastic headgear comprising an elastic sweatband comprising a fabric surface with a peak portion and a trough portion in a longitudinal direction, the peak portion and the trough portion paralleling and connecting to each other, wherein the peak portion and the trough portion are respectively across two ends perpendicular to the longitudinal direction of the fabric surface. 
   
   
       10 . A method for an elastic sweatband, comprising the steps of:
 providing a fabric surface having a longitudinal direction;   hot-pressing the fabric surface forming at least one trough portion, such that the trough portion is across two ends perpendicular to the longitudinal direction of the fabric surface; and   forming at least one peak portion on the fabric surface, wherein the peak portion parallels and connects to the trough portion and the peak portion is across two ends perpendicular to the longitudinal direction of the fabric surface.   
   
   
       11 . The method of  claim 10 , further comprising pre-pressing one side surface of the peak portion so as to form a vertical height of the peak portion. 
   
   
       12 . The method of  claim 10 , further comprising forming a plurality of peak portions and a plurality of trough portions, each of the peak portions and each of the trough portions parallelly connect to each other and perpendicularly across two ends of the longitudinal direction. 
   
   
       13 . The method of  claim 10 , wherein hot-pressing the trough portion includes hot-pressing the trough portions into different cross sectional shapes simultaneously. 
   
   
       14 . The method of the  claim 10 , wherein the fabric surface further encloses a soft material in the longitudinal direction and is made by means of kitting or weaving. 
   
   
       15 . The method of  claim 10 , wherein the fabric surface further includes multiple layers of fabrics and is formed by means of kitting or weaving.