Non-peelabel insole and manufacturing method

Abstract

An insole of the present invention includes a first layer, and a second layer integrally and continuously formed with the first layer. The second layer is mold-injected on the first layer to bond the second layer with the first layer, so as to form the stable bonding therebetween for securely and integrally bonding the first and second layers in a glue-less manner.

1 . An insole for being accommodated within a shoe, comprising a first layer and a second layer having a shape in accordance with said first layer, wherein said second layer is integrally and continuously formed with said first layer to formed a non-peelable insole pad in a glue-less manner. 
     
     
         2 . The insole, as recited in  claim 1 , wherein said second layer is mold-injected on said first layer to form said non-peelable insole pad. 
     
     
         3 . The insole, as recited in  claim 2 , wherein said second layer is heat-bonded with said first layer to form said non-peelable insole pad. 
     
     
         4 . The insole, as recited in  claim 3 , wherein said second layer is bond with said first layer to form said non-peelable insole pad through a thermoplastic formation. 
     
     
         5 . The insole, as recited in  claim 1 , wherein said second layer is made of TPR material. 
     
     
         6 . The insole, as recited in  claim 4 , wherein said second layer is made of TPR material. 
     
     
         7 . The insole, as recited in  claim 1 , wherein said second layer is made of cushioning material for providing a cushion effect of said non-peelable insole pad. 
     
     
         8 . The insole, as recited in  claim 6 , wherein said second layer is made of cushioning material for providing a cushion effect of said non-peelable insole pad. 
     
     
         9 . A method for manufacturing a non-peelable insole, which comprises the steps of:
 (a) cutting a first sheet to form a plurality of first layers;   (b) heat-bonding a second layer on said first layer, wherein said second layer is integrally and continuously formed with said first layer to formed a non-peelable insole pad in a glue-less manner.   
     
     
         10 . The method, as recited in  claim 9 , wherein the step (b) further comprises the steps of:
 (b.1) injecting a fluid material of said second layer evenly onto said first layer; and   (b.2) retaining a shape of said fluid material to match with said first layer until said fluid material of said second layer becomes solid, so as to integrally form said second layer on said first layer.   
     
     
         11 . The method as recited in  claim 9  wherein, in the step (b), second layer is integrated with said first layer through a thermoplastic formation. 
     
     
         12 . The method as recited in  claim 10  wherein, in the step (b), second layer is integrated with said first layer through a thermoplastic formation. 
     
     
         13 . The method, as recited in  claim 9 , wherein said second layer is made of TPR material. 
     
     
         14 . The method, as recited in  claim 12 , wherein said second layer is made of TPR material. 
     
     
         15 . The method as recited in  claim 10  wherein in the step (b.1), the injecting temperature is between 150° C. and 300° C. 
     
     
         16 . The method as recited in  claim 14  wherein in the step (b.1), the injecting temperature is between 150° C. and 300° C. 
     
     
         17 . The method as recited in  claim 10  wherein, in the step (b), said second layer is bonded on said first layer via an insole mold by a process of:
 disposing said first layer on a first molding body of said insole mold; 
 enclosing said first molding body by a second molding body of said insole mold to define a sealing cavity between said first and second molding bodies, wherein said second molding body has at least an injection channel communicating with said sealing cavity; and 
 injecting said fluid material of said second layer through said injection channel into said sealing cavity to evenly dispense on said first layer. 
 
     
     
         18 . The method as recited in  claim 16  wherein, in the step (b), said second layer is bonded on said first layer via an insole mold by a process of:
 disposing said first layer on a first molding body of said insole mold; 
 enclosing said first molding body by a second molding body of said insole mold to define a sealing cavity between said first and second molding bodies, wherein said second molding body has at least an injection channel communicating with said sealing cavity; and 
 injecting said fluid material of said second layer through said injection channel into said sealing cavity to evenly dispense on said first layer. 
 
     
     
         19 . The method, as recited in  claim 18 , wherein a thickness of said second layer is selectively adjusted by a volume of said fluid material of said second layer. 
     
     
         20 . The method, as recited in  claim 19 , wherein said second layer is made of cushioning material for providing a cushion effect of said non-peelable insole pad.