A method for manufacturing waterproof and breathable shoes, comprising:
- manufacturing of a shoe sole, manufacturing of a shoe upper, and bonding of the shoe upper and sole, wherein, the method comprises the following specific steps:
- S1:
- manufacturing of the shoe sole:
- placticating shoe sole materials using an open mill, separately;
- rolling the shoe sole materials by a roller for 1 to 2 times, separately;
- mixing the shoe sole materials for 5 min to 8 min at 55° C. to 65° C.;
- after the mixing, cutting into pieces using a cutting machine according to set requirements;
- placing obtained pieces at room temperature for 24 h;
- and conducting compression molding to obtain a shoe sole for the waterproof and breathable shoes;
- S2:
- manufacturing of the shoe upper:
- knitting a sock knitted fabric from a yarn using a sock knitting machine;
- during the knitting process, weft-knitting a tuck stitch on a side at a connection of a sock upper and a sock sole of the sock knitted fabric and on an upper surface of the sock sole to obtain a semi-finished shoe upper, wherein, tucking is continuously conducted 4 times in the tuck stitch;
- pretreating the semi-finished shoe upper as follows:
- soaking the semi-finished shoe upper in a 4% sodium hydroxide solution at 80° C.;
- adding an accelerating agent in the solution, and further soaking for 15 min;
- taking the semi-finished shoe upper out, washing thoroughly, and drying at 50° C.;
- then soaking the dried semi-finished shoe upper for 40 min in a 120° C. treatment solution with 45 mg/ml polypropylene (PP) and p-xylene;
- adding a butanone solution, and further soaking for 20 min;
- taking the semi-finished shoe upper out, and rolling the semi-finished shoe upper once on a rolling machine, with a pick-up ratio of 70% to 80%;
- and finally drying the semi-finished shoe upper at 50° C. under vacuum for later use;
- stacking a knitted fabric as an outer layer, a polyurethane (PUR) layer coated with glue dots on both sides, and a knitted fabric as an inner layer sequentially into a molding die in a nested fashion;
- placing the molding die in a hot, press for hot-pressing and shaping at 120° C. to 150° C. for 1 min to 2 min;
- and cooling to obtain an integrated shoe upper for the waterproof and breathable shoes, wherein, the hot press adopts a bra hot-pressing and shaping die;
- S3 bonding of the shoe upper and sole:
- bonding the shoe upper and sole for the waterproof and breathable shoes with an adhesive glue according to a size;
- subjecting an obtained structure to instantaneous stamping under a pressure of 50 MPa to 60 MPa and to standing;
- and removing excess glue to obtain the waterproof and breathable shoes.