General Knowledge And Materials Of Soles

As the foundation of shoes,

This is part of many special functions that shoes need to satisfy, but these are not all.

The sole is still a kind of shoe.

Sometimes the sole itself seems to be the focus of the consumer's desire to stimulate fashion, and their pursuit of novelty is endless.

A series of materials for making sole have been produced in an endless stream, so that this change can be realized.

The designer uses the existing abnormal design, especially the early plate connection, plus the appearance of a large number of plastic lightweight materials with wear-resistant materials. The progress of the technology makes it possible to produce lighter and lighter colors, including any pparent or plucent synthetic soles.

They can also provide accurate definition of splint, pattern, record, pattern and texture.

Two or more than two different substances or densities are usually integrated into one sole to achieve the best balance between fashion and function.

Historically speaking, leather is the most commonly used material for soles.

Although leather maintains considerable market opportunities in high quality, especially classical style men's and women's shoes, leather is no longer a commonly used material.

Its abdicated position is attributed to factors such as high cost, poor waterproof performance, lack of durability, frequent renovation, unstable skid resistance, limited design space, and the reform of shoemaking technology.

For example, the only feasible way to use a sheet to make thick sole is to increase the level. This will be a process with twice the effort and half the effort, which is expensive and restricts the design space.

What is important is that sole manufacturing has changed from plate type to moulded type in the last more than 10 years.

The flourishing development of shoe sole materials is a dramatic process in the past 70 years.

For example, in 1930s, sole materials were made of leather, crepe, thin rubber sheet and wood block.

We can not regard wood as a regular material for shoemaking, although there are wooden shoes. The interesting thing is that wooden bottom shoes make people reconsider the World War II era of lack of common materials.

In 40s, vulcanized rubber was produced, and post-war synthetic materials such as styrene butadiene rubber and resin rubber began to develop.

Resin rubber is a very thin sheet. It is still popular to make court shoes.

In 60s polyurethane and thermoplastic materials such as PVC were followed, thermoplastic elastomers and thermoplastic polyurethanes were put into use in 70s.

In 80s, EVA was added, and vulcanized rubber was produced in 90s.

The first breakthrough in the development of sole materials is POE- polyester elastomer.

Compared with leather, natural rubber is still a major feature of sole material even though it is of high quality.

The most interesting thing is that rubber and PVC, which are the first to be accepted by people, will continue to dominate the market and will continue to maintain this state for some time to come.

This is because they have wide acceptability. Compared with other materials, they have the advantage of price, and rubber and PVC have been constantly developing to meet the modern needs such as portability and larger design space.

{page_break}

All kinds of rubber soles together make up about half of the sole of the world.

All types of shoes produced by vulcanized rubber, especially the more lightweight, micro cellular style shoes, are proved to be multi-functional and acceptability, occupying 50% of the total rubber.

PVC and vulcanized rubber share the same market share.

This is a kind of injection material, which can be produced separately and can be made into shoes.

It can also be widely used in many kinds of shoes. Although the skid resistance is poor, it is easy to wrinkle while bending, but it shows good durability, especially in hardness or cold weather.

This material is usually used as a substitute for materials sold out of the market, but the problems that it presents also brings adverse effects to the wider use of this material.

However, the super lightweight materials and matting rubber have the attractive appearance to make them compete with other materials in the market competition.

As a new material for sole materials, polyurethane did not make a good start in the 70s of last century, because it needed precise conditions.

This has led to the main problem of breaking the soles of shoes when they are wearing shoes. Fortunately, it has survived the wobble environment and shared about 7% of the global market share with the thermoplastic material PU, which is a high-end market.

It is a widely used material that can be made into many fashionable styles and adapted to the needs of light style.

The main characteristic of EVA is that its texture is light and elastic. These qualities are usually used to make interlayers rather than outsole.

The difficulty in the process is that the shape and size of EVA eventually exceed the scope of the mold, making the problem of whether the initial mixing components and production conditions are completely accurate.

It is worth noting that today's sole materials are developing to a degree of ambiguity with the boundaries of special materials, especially in terms of characteristics.

For example, replacing thermoplastic polyurethane with rubber can increase the safety factor by 30-40%.

The most exciting development of soles in recent years is the appearance of combined soles.

Combined soles maximize profits from each part by using different materials or different density intersections of the same material.

For example, leather soles can be rubbed or added to PU to increase wear resistance and skid resistance. The outer and sandwich parts of PU material can be used to provide wear resistance by outer mode, while flexible and porous interlayer provides flexibility and comfort.

Thermoplastic rubber, thermoplastic polyurethane and polyvinyl chloride are also used in this way, while the combination of other layers and interlayers includes vulcanized rubber and PU, vulcanized rubber and EVA and thermoplastic polyurethane and PU.

When the industry pays attention to the fashionable appearance, good performance and streamlined production mode, this series of possibilities is very large and changing.