Process and device for waterproofing semi-manufactured shoes, clothing items and accessories, and semi-manufactured products obtained with the process

Process according to the previous claim, characterized in that the shaped member (4) is made of an elastic material.

Process according to one of the previous claims, characterized in that before the pressing the semimanufactured product (1) is folded and flattened along at least two folding lines (3).

Process according to one of the previous claims, characterized in that the folding lines (3) correspond to the intersection of the semimanufactured product (1) with a symmetry plane thereof, so as to obtain two opposing surfaces, which are substantially the same.

Process according to one of the previous claims, characterized in that the shaped member (4) is provided with at least one bladder.

Process according to one of the previous claims, characterized in that the semi-permeable membranes (5) extend beyond the profile of the semimanufactured product (1) so that they can adhere to each other and form one or two strips (7) that seal the semimanufactured product (1).

Process according to one of the previous claims, characterized in that the profile and the thickness of the shaped member (4;

• 8) are shaped so as to adhere to the surfaces of the semimanufactured product (1) which are on the inside during the pressing and to compensate their irregularities, if any.

Process according to one of the previous claims, characterized in that the shaped member (4;

• 8) is made of a heat-resistant material.

Process according to one of the previous claims, characterized in that the glue pattern of the semi-permeable membranes (5) is thermoadhesive, and that the pressing of said membranes (5) onto the semimanufactured product (1) is a hot-pressing.

Process according to one of the previous claims, characterized in that at least one semi-permeable membrane (5) is not porous and carries out the water vapor passage by osmosis.

Process according to one of the previous claims, characterized in that at least one semi-permeable membrane (5) is elastic with a grade of elongation higher than 50%.

Process according to one of the previous claims, characterized in that at least one semi-permeable membrane (5) is made of polyurethane.

Process according to one of the previous claims, characterized in that at least one semi-permeable membrane (5) has a thickness comprised between 5 μm and 100 μm.

Process according to one of the previous claims, characterized in that at least one semi-permeable membrane (5) is combined with a support sheet.

Process according to the preceding claim, characterized in that the support sheet is made of fabric or a similar material, and is firmly fastened to the membrane (5).

Process according to one of the previous claims, characterized in that the glue pattern is made up of a multiplicity of dots having a diameter comprised between 0.1 mm and 0.8 mm.

Process according to one of the previous claims, characterized in that the glue pattern is made up of a multiplicity of dots having a density comprised between 50 dots/cm2 and 200 dots/cm2.

Semimanufactured product (1) of shoes, clothing items or accessories, characterized in that it is waterproofed by means of the process according to one of the previous claims.