In the current market can buy sole material variety, variety of different. The sole or the shoe manufacturers must determine its product should achieve the performance, in line with the standard, and must select materials: Rubber ( RU ), thermoplastic rubber ( TR ), polyurethane ( PU ) or a thermoplastic polyurethane ( TPU ). The upper shoe production as part of a shoe sole materials, must be in close cooperation with the manufacturers, therefore, should make the correct choice of upper material. Design and performance, all of these must be chosen appropriately, to ensure that the final product in good quality.

Of course, shoes and shoes can lump together, on different shoes requirements, especially for the sole requirement, are not the same. On the sole of the shoe sole requirements including light weight, wear low, strong grip, and even leather stability, large temperature range, on the chemical and oil resistance etc.. In general, the market for the requirement of shoe is usually above the requirements of several combination. All kinds of shoes are all important and basic characteristics in common, such as: walk on foot comfort and protection of. Ironically, today, the basic features of these shoes were gradually replaced by the popular fashion, more and more buyers will purchase shoes fashion as the most important factor.

In view of the present situation, the combination of materials, such as double soles, to become the best, most convenient solution, through the use of a resistant outer bottom to achieve the protection of the foot, at the same time, through the use of more softer midsole to achieve walking comfort. For this purpose, the best combination of materials form is the use of rubber ( rubber ) making the outsole, the use of polyurethane production base. Shoe outsole and insole making process can be carried out step, finally using the adhesive for adhering them together, in most cases, the need for pretreatment of rubber surface, such as a halide and / or grinding processing. Another bonding way is between the two materials using automatic adhesive spray process, using rubber chemical bonding function and PU adhesive function, to achieve the purpose of bonding.

There is a more simple shoe material combinations, is a thermoplastic polyurethane and polyurethane, wherein the shoe outsole, the use of thermoplastic polyurethane film production, in the end the use of polyurethane production.

In addition they have outstanding physical properties, thermoplastic polyurethane shoe outsole can meet the needs of the modern designer, in the direct forming technology, can produce transparent sole or brightly colored sole.

In addition, in carving style, almost without any restraint imposed on the designer 's head, and even has a sports shoe features of multiple color soles in the production process can also be quite economy.

Last but not least, is the double soles begin polyurethane / polyurethane material combinations used in the production of double layer sole, wherein, two layers of soles are made of polyurethane production. Foreign base, must choose special dense polyurethane material, and the midsole, for comfort considerations, must be selected with polyurethane foam.

A novel DESMA technique, shoe-making equipment to ensure that a single mechanical system in the industrial rubber, thermoplastic polyurethane and reactive polyurethane ( PUR ) process the most cost-effective.

No matter when, once the production engineering, materials, mold design and process parameters and the expected type of shoes and the production structure of the consistency problem, DESMA can provide comprehensive professional knowledge, qualified professional suggestion and take the customer as the center of project planning.

Polyurethane ( PU )

The most simple shoes with a single density polyurethane outsole. Polyurethane shoe sole must have two tasks: first, we must feel comfortable, and the sole light, second, is a very important point, namely the security problems, such as skid. In fact, it is difficult to separate the two kinds of functions at a suit, in most cases, only one can play the correct performance of.

Polyurethane shoe sole density mostly in 0.8g / cm3 left and right sides, usually used for leisure shoe. Single density shoes of the production is simple and effective, but the products produced are still high-end commercial shoes.

Polyurethane / polyurethane ( PU / PU )

Over the past 20 years, the use of direct injection molding machine, the footwear industry has been the production of dual density polyurethane shoes.

Compact polyurethane outsole and lightweight and comfortable insole combination makes the shoe and two sets of features in a possible. You can use the structure is very dense material to manufacture the outsole, make its have stronger abrasion resistance, and is endowed with good antiskid performance and anti grease. Can use polyurethane foam system to make the bottom, so that shoes will be more comfortable, even more portable.

The production of shoes and single density shoes processing is different, the first step, need to be dense outsole is injected into the closed mold. After a certain time of the reaction, insole and outsole upper injection molding, the sole and the upper adhesive, a simple shoe sample will be successful.

In most cases, the combination of materials used for safety footwear, because in this industry, both to seek comfort in appearance, but also have excellent properties. But in casual shoes, can also be found in many of the use of polyurethane / polyurethane material combination of interesting design. Dense outer bottom density is 0.9g / cm3, and the midsole density were 0.45g / cm3.

On the safety shoes, the two layer bonded over their standards, in the end to make available more thin.

Thermoplastic polyurethane ( TPU )

This kind of material combinations and as propaganda, this is because the single density thermoplastic polyurethane outsole will not make the shoes comfortable many, thermoplastic polyurethane density in 1g / cm3 left and right sides, which means that the shoes on the footsteps are not likely to produce a good sound insulation effect. In addition, the thermoplastic polyurethane adhesive on an upper is often very difficult, therefore, thermoplastic polyurethane outsole not often use.

TPUR thermoplastic polyurethane ( TPU / TPU )

Because the material supplier new advances, such type of shoes become more interesting. Thin thermoplastic polyurethane outsole and blown thermoplastic polyurethane shoe sole future will become a new kind of material combination. More or less, its principle and polyurethane / polyurethane material combinations have in common. Thermoplastic polyurethane hardness range is bigger, in the footwear industry, Shaw hardness values from 55A to 85A, in fact, its abrasion and slip of the excellent, thermoplastic polyurethane given sole good carving. Blown thermoplastic polyurethane can now be perfusion technology, which means that the manufacturer can be in short-term inside skipped from thermoplastic polyurethane to thermoplastic polyurethane / thermoplastic polyurethane combination of materials.

In the processing, compared with polyurethane, thermoplastic polyurethane has great advantage. Thermoplastic polyurethanes in feed is available when the bagged, granular. Does not involve and chemically related professional knowledge, but also the operating personnel in the operation of machine is not forced to adjust to a different machine parameters.

Thermoplastic polyurethane / polyurethane ( TPU / PU )

It is one of the most commonly used material combinations. Thermoplastic polyurethane / polyurethane has many advantages. First of all, through the one-stop process complete shoe-making technology. In this process, the thermoplastic polyurethane was used for making shoe outsole, and polyurethane is used in making shoes in the end. On the bottom of the direct forming technology, very interesting is the use of compact thermoplastic polyurethane making shoes outsole and reaction type polyurethane foam of low weight of the shoe insole combination between. Combined results are highly wear resistant composite outsole outsole and very comfortable insole.

In addition to having outstanding physical properties, thermoplastic polyurethane shoe outsole can meet the needs of the modern designer, in the direct forming technology, the use of transparent sole or brightly colored sole.

Multifunctional polyurethane thermoplastic polyurethane ( MTPU / PU )

The use of thermoplastic polyurethane injection molding process, a new DESMA process can produce three kinds of color soles, which makes the designer and manufacturer of extremely excited. This may be achieved by a process, three kinds of color or function. Nonferrous Materials by a pair of injection molding equipment into the mold frame pathways, and to fill a sole region, into the amount determined by the user. After hardening, filling material, so that the formation of the outsole. Then injection shoes in the end, to complete the production. All of the steps on the same machine to complete, with the entire process is an integral part of. Untreated, may not be sold. Not only saving the processing, distribution and materials step, and improve the product quality and economic performance. A process, a plurality of sole properties, DESMA processes quickly using the new products may be unable to determine the characteristic, now, not only can according to color to distinguish sole category, can also according to different hardness, strength, function and characteristics to distinguish.

For example, these advantages make the safety shoe manufacturer can provide special category support function or users convenient walking shoes.

Rubber / polyurethane ( RU / PU )

So far, the best combination of materials is one of the outer bottom made of rubber, polyurethane making shoes by the end of. Shoe outsole and insole making process can be carried out step, finally using the adhesive for adhering them together, in most cases, the need for pretreatment of rubber surface, such as a halide and / or grinding processing. Another bonding way is between the two materials used for spinning wool, using rubber mechanical bonding function and polyurethane adhesive function, to achieve the purpose of adhesive.

However, all of these processes involve a considerable number of auxiliary equipment and a large number of works, many footwear manufacturers try to avoid this kind of cost intensive investment, and the use of other easy processing materials. Under normal circumstances, due to physical and chemical characteristics of dissimilarity, rubber and polyurethane is not bonded. In addition, this process can be expected under conditions, usually not processing polyurethane. DESMA thus developed into one without the use of the process steps of the process, now, it can use the rubber / polyurethane material combination, through one-stop process and produce need not use any harmful glue shoes. Subsequently, polyurethane injection molding apparatus in the polyurethane is injected in the rubber outsole at the same time, filling in water-based adhesive, two kinds of different materials to achieve a perfect adhesive, and in accordance with the relevant safety standards.

Rubber / rubber ( RU / RU )

Most commonly used in military shoe production process is one of the use of rubber / rubber combination process, in this process, the shoe outsole and midsole are made of rubber production. The outsole and the use of thermoplastic polyurethane / thermoplastic polyurethane material combination process is dense and outsole, a shoe midsole with foam rubber production. This kind of shoe is excellent performance, such as high temperature resistance, or an oil and fuel. These materials and polyurethane as does not support hydrolysis, but in the military industry, military industry is different, use of rubber / rubber military shoes. In the field of sports shoes is so. This combination of materials has many significant advantages, such as, the true, good slip properties.