Air permeable cushioning structure

Abstract

An air permeable cushioning structure contains: a first elastic layer, a second elastic layer, and a third elastic layer. The first elastic layer has plural first plastic threads irregularly wound therein, a wound connection portion of any two first plastic threads is melted together, and a disconnection portion of any two first plastic threads has a first pore formed thereon. The second elastic layer has plural second plastic threads irregularly wound therein, a wound connection portion of any two second plastic threads is melted together, and a disconnection portion of any two second plastic threads has a second pore formed thereon. The third elastic layer has plural third plastic threads irregularly wound therein, a wound connection portion of any two third plastic threads is melted together, and a disconnection portion of any two third plastic threads has a third pore formed thereon.

What is claimed is: 
     
         1 . An air permeable cushioning structure comprising:
 a first elastic layer having plural first plastic threads irregularly wound therein, wherein a wound connection portion of any two first plastic threads is melted together, and a disconnection portion of any two first plastic threads has a first pore formed thereon;   a second elastic layer having plural second plastic threads irregularly wound therein, wherein a wound connection portion of any two second plastic threads is melted together, and a disconnection portion of any two second plastic threads has a second pore formed thereon;   a third elastic layer having plural third plastic threads irregularly wound therein, wherein a wound connection portion of any two third plastic threads is melted together, and a disconnection portion of any two third plastic threads has a third pore formed thereon.   
     
     
         2 . The air permeable cushioning structure as claimed in  claim 1 , wherein a density of the first elastic layer is 30 to 80 kg/and a thickness of the first elastic layer is 5 to 100 mm. 
     
     
         3 . The air permeable cushioning structure as claimed in  claim 1 , wherein a density of the second elastic layer is 30 to 100 kg/m 3 , and a thickness of the second elastic layer is 30 to 200 mm. 
     
     
         4 . The air permeable cushioning structure as claimed in  claim 1 , wherein a density of the third elastic layer is 40 to 100 kg/m 3 , and a thickness of the third elastic layer is 30 to 200 mm.