The upper refers to the upper part of the shoe, which is usually composed of multiple fabrics. The following are the methods and techniques of shoe uppers:

Cutting: First, according to the design drawings of the shoe uppers, cut them according to the texture and size requirements of the fabric. It’s important to note that different fabrics have different elasticities and thicknesses, so adjust the size and shape of your cut accordingly.

Sewing: Sewing the cut fabric according to the design requirements. Commonly used sewing methods include flat seam, bias seam, edge sealing, etc. It should be noted that when sewing, the fabric should be kept flat and symmetrical to avoid skew and blistering.

Fitting: The upper usually needs to be fitted to the sole and toe box. Before fitting, the edges of the sole and upper need to be sanded and polished for a better fit. When fitting, adhesives such as glue and hot melt adhesive can be used for fixation.

Plastic shaping: After the fitting is completed, plastic surgery is required to make the upper more beautiful and meet the design requirements. Commonly used shaping methods include thermoforming, embossing, engraving, etc. It should be noted that during plastic surgery, attention should be paid to temperature and pressure control to avoid fabric deformation or burns.

Sanding: Finally, sand and trim the upper. You can use grinders, hand grinding discs and other tools for grinding and trimming to make the uppers smoother and more refined.

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It should be noted that the production of shoe uppers needs to take into account multiple aspects such as fabric selection, cutting, sewing, fitting, shaping and polishing. Requires certain sewing skills and manual operation skills. At the same time, different types of shoe uppers, such as sports shoes, leather shoes, high heels, etc., also have certain differences in production difficulty and craftsmanship, and need to be adjusted and processed according to specific circumstances.