Vapor-permeable and waterproof sole for shoes, shoe manufactured with the sole, and method for manufacturing the sole and the shoe

A method for manufacturing shoes with a vapor-permeable and waterproof sole, comprising:

• fitting an upper, associated with a corresponding insole and with a lining, on a last for a direct injection molding on the upper;
• applying an assembly to a surface of a lower mold part of a mold the assembly being formed, in succession downwardly from above, by a vapor-permeable or perforated filler, a membrane made of a material which is impermeable to water and permeable to water vapor, and a protective element, which is also vapor-permeable or perforated and is in contact with said lower mold part;
• closing the mold in an upward region so as to press said assembly against the lower mold part;
• injecting plastic material to form a midsole which is superimposed on part of said upper such that an outermost peripheral portion thereof is visible when said sole is associated with said upper, said injection forming a single peripheral seal around said membrane such that said midsole peripherally surrounds said membrane and is rigidly coupled to said membrane and said filler, said midsole and said filler forming a first load-bearing component;
• and
• gluing a second component including a preformed tread to said midsole such that the membrane is disposed below said vapor-permeable or perforated filler and above said tread, said preformed tread including through perforations disposed substantially at said vapor-permeable or perforated filler, said tread including articulated peripheral elements that are wing projections disposed along an outer peripheral portion of said midsole, such that said midsole forms, in cooperation with said tread, a secondary tread arranged between mutually separate portions of said tread.

A method for manufacturing vapor-permeable and waterproof soles, comprising:

• applying an assembly to a surface of a lower mold part of a mold, the assembly being formed, in succession downwardly from above, by a vapor-permeable or perforated filler, a membrane made of a material which is impermeable to water and permeable to water vapor, and a protective element, which is also vapor-permeable or perforated and is in contact with said lower mold part;
• closing the mold in an upward region by a dummy last, so as to press said assembly against the lower mold part;
• introducing plastic material to form a midsole such that an outermost peripheral portion thereof is visible when said sole is associated with an upper, the midsole forming a single peripheral seal around said membrane such that said midsole peripherally surrounds said membrane and is rigidly coupled to said membrane and said filler, said midsole and said filler forming a first load-bearing component;
• and
• gluing a second component including a preformed tread to said midsole such that the membrane is disposed below said vapor-permeable or perforated filler and above said tread, said preformed tread including through perforations disposed substantially at said vapor-permeable or perforated filler, and said tread including articulated peripheral elements that are wing projections disposed along an outer peripheral portion of said midsole, such that said midsole forms, in cooperation with said tread, a secondary tread arranged between mutually separate portions of said tread.

A method for manufacturing shoes with a vapor-permeable and waterproof sole, comprising:

• fitting an upper, associated with a corresponding insole and with a lining, on a last for direct injection molding on the upper;
• applying a vapor-permeable or perforated filler to a surface of a lower mold part of a mold;
• closing the mold in an upward region by said last, so as to press said filler against the lower mold part;
• attaching a membrane below said vapor-permeable or perforated filler, said membrane being made of a material which is impermeable to water and permeable to water vapor;
• injecting plastic material to form a midsole, which is superimposed on part of said upper, such that an outermost peripheral portion thereof is visible when said sole is associated with said upper, said injection forming a single peripheral seal around said membrane such that said midsole peripherally surrounds said membrane and is rigidly coupled to said membrane and said filler, said midsole and said filler forming a first load-bearing component;
• and
• gluing a second component including a preformed tread to said midsole such that the membrane is disposed below said vapor-permeable or perforated filler and above said tread, said preformed tread including through perforations disposed substantially at said vapor-permeable or perforated filler, the membrane and a corresponding vapor-permeable or perforated protective element being associated with said preformed tread, and said tread including articulated peripheral elements that are wing projections disposed along an outer peripheral portion of said midsole, such that said midsole forms, in cooperation with said tread, a secondary tread arranged between mutually separate portions of said tread.