There are many similarities between sports shoes and leather shoes in the production process, this article will briefly introduce the upper production process and the upper bottom combination technology.

First, the side production process
The production process of the upper side covers the cutting and stitching of the upper part, which converts the design drawing and template of the athletic shoe into the facial part, and finally forms a three-dimensional help.
01 Tailoring
Cutting is the first step in the manufacture of sports shoes, involving the conversion of paper templates into facial pieces.
After receiving the production notice and confirming the material and quantity, the cutting workshop can start the cutting work. The cutting is mainly completed by the cutting machine. The error of the parts cut by the machine is small, the appearance is clean and beautiful, and the work efficiency can be significantly improved, which is difficult to compare with manual cutting. When cutting the machine, pay attention to the layout of the material and the confirmation of the tool die.

02 Suture
Stitching is another key process after cutting, stitching the cut facial parts in order to form a complete set. Before stitching, it is also necessary to pre-treat the facial parts such as thinning, printing and fitting.
The main equipment used in the stitching process is a sewing machine. High head sewing machine is used in the production of sports shoes. Different sports shoes have different requirements for stitching, and it is necessary to clarify the margin and needle distance of the stitching line in advance.

Two, help the bottom of the combination of technology
There are mainly five kinds of upper sole bonding technologies in footwear manufacturing: gluing, vulcanization, sewing, injection and molding processes.
In the production of sports shoes, the most commonly used upper sole bonding technologies are adhesive, vulcanization and injection processes.
01 Adhesive technology
Most sports shoes use adhesive mode to combine the upper bottom. During operation, line the upper surface of the brush to avoid uneven or overflow of the glue surface. At the same time, the appropriate adhesive and treatment agent should be selected according to the material of the upper side and the outsole.

02 vulcanization technology
Vulcanization technology is often used to produce economical sports shoes, such as canvas shoes and synthetic leather casual shoes. The vulcanization process involves heating raw glue, changing its properties, forming it and bonding it to the side. Vulcanization is divided into one vulcanization and multiple vulcanization, and the number of vulcanization is closely related to the texture of the outsole after molding.

03 Injection Technology
Injection technology mainly through the mold and injection machine one-time molding production of sports shoes. The upper side of this kind of product is consistent with the outsole material, in fact, the help and the bottom are a whole. As design trends change, so does injection technology.

Through the introduction of these processes, we can see the technical details of the upper side and the bottom of the shoe and leather shoes, and the precise execution of these processes is crucial to ensure the quality and comfort of footwear products.