A shoe only consists of an upper and a sole, which will appear monotonous and dull. In order to make it unique and show different personality characteristics, people make various colors, patterns and shapes on the relatively monotonous leather surface and mesh surface, which is the craft. The craft mainly plays a decorative role, which can leave people with a sense of beauty and aesthetic interest such as hazy, three-dimensional, metallic and speed.

According to statistics, the current processes can be divided into 14 categories, which are described in detail below:

High frequency:

Hot pressing high frequency: pressing concave-convex modeling on synthetic leather and mesh plane by high frequency plastic welding machine; The effect is strong, angular, three-dimensional and lasting.

High-frequency printing: printing combined with high-frequency operation makes the pattern achieve exquisite and lasting effect.

Hot cutting high frequency: press transparent or opaque material on another material, and open the mold for special processing. Therefore, the cost is higher and the production is more difficult, which is a comprehensive embodiment of the technical level.

Differentiation and gradual change: Differentiation and gradual change enrich the diversity of colors and patterns, with obvious effect and strong appeal.

Injection molding: Shoe ornaments are made of different materials to produce a three-dimensional effect, which is used to decorate the upper. Compared with injection molding, the drip molding material is softer and the injection molding material is tougher, both of which need to be molded, and the cost is higher, but the effect is exquisite and the embellishment is very infectious.

Electric embroidery: that is, computer embroidery, in which various decorative patterns are embroidered on the vamp, especially the LOGO of the brand often adopts electric embroidery technology. A pair of elegant shoes, in addition to its appearance style and color matching, can best highlight the aesthetic feeling of shoes in modeling, that is, the style of shoe last. The design of shoe last is one of the most important design tasks in the process of shoe design and manufacture. Without the novel design of shoe last, there would be no popular new shoe design.

The design principle of shoe last is based on the three-dimensional space of foot shape. After proper and reasonable modification and design, the irregular three-dimensional space of foot shape is transformed into the regular three-dimensional space of shoe last.

Of course, among other factors that show the beauty of shoes, the quality of materials can also make shoes show elegant beauty. However, among the conditions that determine the fashion trend of shoes, the most important factor is the style of shoe last.

The shoe last conforms to the physiological function of human foot, fits the skeleton of human foot, and is suitable for the characteristics of human foot in China. After the sports shoes are formed, they do not go out of shape, look good and have a solid internal structure.

(1) Various functional designs

1, damping effect:

Refers to the effect that the sole absorbs shock and vibration when the foot touches the ground. Such as air cushion, PU, MD, EVA, etc. All of them have anti-shock function, especially the air cushion is generally valued by people. When people's feet fall to the ground, the impact force of the ground on people's feet is usually 2-3 times that of the human body, especially when bouncing, which can be as high as 10 times. A good anti-shock device can reduce this impact force. PU air cushion shell contains gas with a certain pressure. When the sole of the foot falls to the ground, it can disperse the impact force through deformation to achieve the effect of shock absorption. So as to avoid damage caused by excessive vibration.

2. Torsion system:

When athletes turn around, turn around and move sideways, different parts of their feet will twist in different directions, which is easy to cause sports sprain. Install a device on the inside of the foot and the arch of the foot with high-density materials to prevent the foot from turning inward excessively during exercise and avoid sprain during exercise.

3. Energy regression

This means that the sole can store the energy generated by the ground, and just before the foot leaves the ground, the sole will return this energy to the foot. Among them, air cushion is the most obvious. When a person's feet fall to the ground, the feet give energy to the air cushion, and the air cushion is deformed after being stressed. When a person lifts his feet, the air cushion will bounce energy back to his feet, that is to say, when he lifts his feet, the air cushion will help him by bouncing energy, making the athletes run faster and jump higher.

Step 4 be healthy

It refers to the application of shoe last design and structural design (such as upper, bottom seam, important force range structure, etc.). ) and the superior telescopic characteristics of various new high-tech materials (four-sided elasticity and the application of lycra fabric) make consumers feel comfortable and fit their feet. For example.

5. Bending effect

There are many factors that affect the bending effect of a pair of shoes, such as the design of vamp, insole, midsole and outsole. The general requirement is that the bending part should be consistent with the bending part of the foot and conform to the principles of sports physiology and sports mechanics.

6. Anti-skid effect

Refers to the antiskid effect or grip of the outsole on the surface. If the anti-skid effect is not enough, it will not only lead to the danger of slipping and sports injury, but also affect the sports performance of users. The anti-skid effect is mainly reflected in the application of base materials and the design of sole lines. According to the different movement modes, the setting and design of anti-skid effect will be adjusted accordingly.

(2) Various COMFORT structural designs.

1, placing support on the inner side of the sole: a convex support pad is arranged at the arch of the sports insole to match the arch contour of the sole to achieve the support effect and reduce sports fatigue.

2. Double-density insertion structure: control or correct the phenomenon of foot turning. Soft cushion material is used on the outer side of the sole to absorb the vibration generated when the heel hits the ground, and hard cushion material is used on the inner side to prevent the foot from excessively pronating and improve stability. Hard materials are also used on both sides of the heel of the middle insert structure to strengthen the stability of the heel and control the turnover of the foot.

3. Design and materials to keep feet dry and comfortable:

Sweat absorption and perspiration effect: the design of double-layer separation structure in shoes, the application of sponge and sweat-conducting mesh materials.

4. Waterproof effect of shoe material: design of heightening side wall, application of polymer PU material, environmentally friendly water-soluble glue. Has the effects of enhancing the firmness of the joint and facilitating cleaning.

5. Ventilation effect: ventilation hole design, superfine fiber, various ventilation designs and application of different materials.

6. Ventilation, heat insulation, heat conduction, shock absorption, sports assistance, etc. What the structural design has.