BI-MATERIAL SHOE BOTTOM WITH FOAM INSERT Russian patent published in 2018 - IPC A43B13/12 

FIELD: personal usage items.

SUBSTANCE: invention relates to a shoe. Bottom of a shoe, consisting of two materials, comprising first running layer (1) made of thermoplastic polyurethane (TPPU) or leather or other material; second layer (2) made of polyurethane (PU) or leather or other material and laid on top of said first running layer (1); and polyvinyl chloride (PVC) film (6) disposed between first running layer (1) and second layer (2), wherein second layer (2) comprises inside it an insert made of open-cell polyurethane foam, having a higher density in heel area (3) than in region (4) of the sole and the foot arch. Bottom of the shoe, consisting of two materials, comprises: first running layer (1) made of TPPU or leather or other material; second layer (2) made of PU or leather or other material and laid on top of said first running layer (1); and PVC film (6) disposed between first running layer (1) and second layer (2), wherein second layer (2) comprises inside it an insert made of open-cell polyurethane having the same density as heel area (3) and region (4) of sole and foot arch.

EFFECT: creating a shoe with a bottom made of PU/TPPU or leather or other material with an insert of open-cell polyurethane foam, which does not cause allergies, has anti-bacterial, anti-mould, anti-impact properties; having a higher density in the heel area and a lower density in the region of the sole and foot arch, to promote and improve venous outflow in the circulation of blood; promoting very good air circulation between the bottom and the inner insoles of the shoe when the foot steps on the ground, thus, eliminating the problem of sweating of the foot; enabling optimal use of the said shoe even by people suffering from diabetic foot syndrome; improvement of anti-gravity response to loads in order to reduce the load on the spine; low cost of the insert.

4 cl, 4 dwg