Ventilative pu midsole or sole pad

Abstract

A ventilative PU midsole or sole pad includes at least a solid layer, which is composed of plural PU strings, and the strings are overlaid mutually and irregularly to become multi-layers with numerous gaps among one another, so that the solid layer is provided with good ventilation to be used as a midsole for a shoe, or directly used as a sole pad. Thus the midsole has a good ventilation, preventing a wearer from getting skin disease or bad foot odor, and at the same time it may have no odor, no smell and environmentally friendly, letting a wearer feel comfortable without getting tired in wearing.

1 . A ventilative PU midsole or sole pad comprising:
 at least a solid layer made of plural PU strings formed into a block by means of ejecting extracting, heating, overlaid mutually to become multi-layered, moved on a conveyer, then cooled and cut into a necessary block of a certain size needed, said solid layer having the strings spaced apart with tiny gaps so that the solid layer is provided with a lot of tiny ventilative holes, said solid layer able to be used as a midsole in a shoe or as a sole pad.   
     
     
         2 . The ventilative PU midsole or sole pad as claimed in  claim 1 , wherein said solid layer has a certain thickness, formed by means of pressing process. 
     
     
         3 . The ventilative PU midsole or sole pad as claimed in  claim 1 , wherein a ventilative pad is additionally adhered on said solid layer. 
     
     
         4 . The ventilative PU midsole or sole pad as clamed in  claim 1 , wherein said solid layer is additionally provided with a lot of ventilative passageways formed laterally in a bottom and penetrating through to reach two sides of said solid layer. 
     
     
         5 . The ventilative PU midsole and sole pad as claimed in  claim 1 , wherein said solid payer is additionally provided with plural through holes spaced apart lengthwise in plural rows.