Injection molded phylon midsole

Abstract

Disclosed is an injection molded Phylon (foam ethylene vinyl acetate) midsole having distinguished advantages, such as increased productivity, improved quality, decreased manufacturing cost, reduced fraction defective, reduced weight or the like, in relation to a conventional injection molded Phylon midsole. The injection molded Phylon midsole is manufactured by an upper molding and a lower molding. The midsole ( 10 ) is formed with a vertical through-groove ( 11 ), a horizontal through-groove ( 11 ), or a cross through-groove ( 11 ). When the midsole ( 10 ) is bonded to an outsole ( 2 ), the midsole ( 10 ) of a proper size within an allowable variation or deviating from the allowable variation widens or constrains the through-groove ( 11 ), so that the midsole ( 10 ) is exactly bonded to the outsole ( 2 ) without deforming the midsole.

1 . An injection molded Phylon midsole manufactured by an upper molding and a lower molding, wherein the midsole ( 10 ) is formed with a vertical through-groove ( 11 ), a horizontal through-groove ( 11 ), or a cross through-groove ( 11 ), and wherein when the midsole ( 10 ) is bonded to an outsole  2 , the midsole  10  of a proper size within an allowable variation or deviating from the allowable variation widens or constrains the through-groove ( 11 ), so that the midsole ( 10 ) is exactly bonded to the outsole ( 2 ) without deforming the midsole.  
     
     
         2 . An injection molded Phylon midsole manufactured by an upper molding and a lower molding, wherein the midsole ( 10 ) is formed with a middle rib ( 10   a ) at a bottom surface thereof and a vertical blind groove ( 11   b ), a horizontal blind groove ( 11   b ), or a cross blind groove ( 11   b ) at an upper surface thereof, and wherein when the midsole ( 10 ) is bonded to an outsole ( 2 ), the midsole ( 10 ) of a proper size within an allowable variation or deviating from the allowable variation widens or constrains the through-groove ( 11   b ), so that the midsole ( 10 ) is exactly bonded to the outsole ( 2 ) without deforming the midsole.  
     
     
         3 . An injection molded Phylon midsole manufactured by an upper molding and a lower molding, wherein the midsole ( 10 ) is formed with a middle rib ( 10   a ) at an upper surface thereof and a vertical blind groove ( 11   c ), a horizontal blind groove ( 11   c ), or a cross blind groove ( 11   c ) at a bottom surface thereof, and wherein when the midsole ( 10 ) is bonded to an outsole ( 2 ), the midsole ( 10 ) of a proper size within an allowable variation or deviating from the allowable variation widens or constrains the through-groove ( 11   c ), so that the midsole ( 10 ) is exactly bonded to the outsole ( 2 ) without deforming the midsole.  
     
     
         4 . An injection molded Phylon midsole manufactured by an upper molding and a lower molding, wherein the midsole ( 10 ) is formed with a middle rib ( 10   a ) at a center portion thereof and a vertical blind groove ( 11   d ), a horizontal blind groove ( 11   d ), or a cross blind groove ( 11   d ) at upper surface and bottom surface thereof, respectively, and wherein when the midsole ( 10 ) is bonded to an outsole ( 2 ), the midsole ( 10 ) of a proper size within an allowable variation or deviating from the allowable variation widens or constrains the through-groove ( 11   d ), so that the midsole ( 10 ) is exactly bonded to the outsole ( 2 ) without deforming the midsole.  
     
     
         5 . An injection molded Phylon midsole manufactured by an upper molding and a lower molding, wherein the midsole ( 10 ) is formed with at least two holes ( 11   a ), and wherein when the midsole ( 10 ) is bonded to an outsole ( 2 ), the midsole ( 10 ) of a proper size within an allowable variation or deviating from the allowable variation widens or constrains the holes ( 11   a ), so that the midsole ( 10 ) is exactly bonded to the outsole ( 2 ) without deforming the midsole.  
     
     
         6 . The injection molded Phylon midsole as claimed in  claim 1 , wherein the through-groove ( 11 ) and the blind grooves ( 11   b ), ( 11   c ) and ( 11   d ) have a width of 3 mm to 5 mm, respectively.  
     
     
         7 . The injection molded Phylon midsole as claimed in  claim 5 , wherein the holes ( 11   a ) are formed in various shapes such as a circular, an oval or a polygon, and the holes ( 11   a ) have a diameter of 5 mm to 10 mm.  
     
     
         8 . The injection molded Phylon midsole as claimed in  claim 1 , wherein at least one through-groove ( 11 ) or at least one blind groove ( 11   b ), ( 11   c ) or ( 11   d ) is formed vertically, horizontally or vertically and horizontally.  
     
     
         9 . The injection molded Phylon midsole as claimed in  claim 2 , wherein the middle rib ( 10   a ) has a thickness of 1 mm to 2 mm.  
     
     
         10 . The injection molded Phylon midsole as claimed in  claim 2 , wherein the through-groove ( 11 ) and the blind grooves ( 11   b ), ( 11   c ) and ( 11   d ) have a width of 3 mm to 5 mm, respectively.  
     
     
         12 . The injection molded Phylon midsole as claimed in  claim 3 , wherein the through-groove ( 11 ) and the blind grooves ( 11   b ), ( 11   c ) and ( 11   d ) have a width of 3 mm to 5 mm, respectively.  
     
     
         13 . The injection molded Phylon midsole as claimed in  claim 4 , wherein the through-groove ( 11 ) and the blind grooves ( 11   b ), ( 11   c ) and ( 11   d ) have a width of 3 mm to 5 mm, respectively.  
     
     
         14 . The injection molded Phylon midsole as claimed in  claim 2 , wherein at least one through-groove ( 11 ) or at least one blind groove ( 11   b ), ( 11   c ) or ( 11   d ) is formed vertically, horizontally or vertically and horizontally.  
     
     
         15 . The injection molded Phylon midsole as claimed in  claim 3 , wherein at least one through-groove ( 11 ) or at least one blind groove ( 11   b ), ( 11   c ) or ( 11   d ) is formed vertically, horizontally or vertically and horizontally.  
     
     
         16 . The injection molded Phylon midsole as claimed in  claim 4 , wherein at least one through-groove ( 11 ) or at least one blind groove ( 11   b ), ( 11   c ) or ( 11   d ) is formed vertically, horizontally or vertically and horizontally.  
     
     
         17 . The injection molded Phylon midsole as claimed in  claim 3 , wherein the middle rib ( 10   a ) has a thickness of 1 mm to 2 mm.  
     
     
         18 . The injection molded Phylon midsole as claimed in  claim 3 , wherein the middle rib ( 10   a ) has a thickness of 1 mm to 2 mm.