To provide a means for keeping an insole clean by laminating fabrics on the surface of the insole with an appropriate adhesion strength and enabling the laminated fabrics to be peeled off one by one.
A surface layer of the insole of a shoe consists of an upper layer fabric and a lower layer thermoplastic synthetic resin film integrated with each other with an adhesive. A plurality of the surface layers are prepared to be laminated in layers on a base material of the insole. The lower layer thermoplastic synthetic resin film of the surface layer is fluidized by heat-softening and pressurizing the film, and is appropriately bonded to the fabric of the lower layer in the surface layer by the anchoring effect. In this way, the surface layers are formed in layers, and by peeling off the surface layers one by one, a fresh surface layer appears.
YAMAMURA HIROKI
YOSHIKAWA HIROSHI
KOGA TORU
