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    Comprehensive Analysis Of Polyurethane Sole Materials Combination In The Market

    2010/4/8 15:14:00 74

    Sole Polyurethane

      Available in the current market. Sole There are many kinds of materials and different patterns. The sole or shoe manufacturer must determine what kind of performance the product should meet, and what criteria should be met, and the choice of making materials: Rubber (RU), thermoplastic elastomer (TR) and polyurethane ( PU Or thermoplastic polyurethane (TPU).


    As an integral part of shoe making, the upper shoe must be closely cooperated with the sole material. Therefore, the manufacturer should make the right choice for the upper material. There are also design and performance, all these parts must be selected properly to ensure the final product has good quality.


    Of course, shoes and shoes can not be generalized. The requirements for different shoes, especially for sole, are not the same. The requirements for soles include light weight, low friction, strong grip, and even the sole. Leatherwear Its stability, temperature range, resistance to chemicals and oils and so on. Generally speaking, the market demand for shoes is usually a combination of several items mentioned above. All kinds of shoes have important and basic common characteristics, such as walking comfort and foot protection. Ironically, nowadays, these basic characteristics of shoes are gradually replaced by fashion. More and more buyers see fashion as the most important factor in buying shoes.


    In view of the current situation, the combination of materials, such as double sole, has become the best and most convenient solution to protect feet by using resistant outsole, and at the same time, the comfort of walking is achieved by using a softer middle sole. For this purpose, the best form of material combination at present is to use rubber (artificial rubber) to make the sole and use polyurethane to make the middle sole. The manufacturing process of the sole and the sole of the sole can be carried out step by step. Finally, the adhesive is used to bond them together. In most cases, pretreatment is required, such as halogenation and / or polishing of the rubber surface. Another way of bonding is to use the automatic adhesive spray process between the two materials, and use the chemical bonding function of rubber and the adhesion function of PU to achieve the purpose of bonding.


    And a simpler one. Shoe making materials The combination method is thermoplastic polyurethane and polyurethane, wherein the sole of the shoe is made of thermoplastic polyurethane thin layer, and the middle sole is made of polyurethane.


    In addition to their outstanding physical properties, the shoe sole made of thermoplastic polyurethane can meet the needs of modern design, and can produce transparent soles or brightly colored soles during direct molding process.


    In addition, there are hardly any bondage imposed on the designer's head, even on carving patterns. Gym shoes The characteristics of the multi colored soles in the production process can also be quite economical.


    Last but not least, double bottom soles start to mix polyurethane / polyurethane materials for the production of double bottom soles, of which two layers of sole are made of polyurethane. At the outset, special polyurethane materials must be selected. For the interlayer of shoes, the foamed polyurethane must be selected for comfort consideration.


    With the new DESMA technology, Shoemaking equipment It can ensure that the industrial rubber, thermoplastic polyurethane and activated polyurethane (PUR) technology in single mechanical system is most economical.


    Whenever problems arise in production engineering, materials, tooling design and process parameters, which are consistent with the expected footwear types and the current production structure, DESMA can provide comprehensive expertise, qualified professional advice and customer centred project planning.


    Polyurethane (PU)


    The simplest shoes are made of single density polyurethane sole. Polyurethane soles must have two tasks: first, we must feel comfortable, and the sole is light. Second, it is also a very important point, that is, safety problems, such as skid resistance. In fact, it is difficult to integrate these two functions. In most cases, only one of these functions can produce the correct performance.


    The density of polyurethane soles is mostly around 0.8g/cm3. Casual shoes Industry. The production of single density shoes is very simple and effective, but the products produced are still high-grade commercial shoes.


    Polyurethane / polyurethane (PU/PU)


    Over the past 20 years, the footwear industry has been producing double density polyurethane shoes using direct injection molding machines.


    The combination of compact polyurethane outsole and light and comfortable middle sole makes it possible for shoe sets to be made of two characteristics. A very compact material can be used to make the outsole, making it more resistant to abrasion and giving good skid resistance and grease resistance. The foam polyurethane system can be used to make the middle sole, so that the shoes will be more comfortable and even lighter.


    The production of shoes is different from that of single density shoes. The first step is to squeeze the dense outsole into the closed mold. After a certain reaction, the upper part of the bottom and the bottom of the outer part are molded by injection, and a simple shoe sample is successfully delivered through the gluing between the sole and the upper.


    In most cases, such material combinations are used for safety. footwear industry Because in this industry, we should not only seek comfortable appearance, but also have good characteristics. But in casual footwear, you can also find many interesting designs using polyurethane / polyurethane material combinations. The density of compact outsole is mainly 0.9g/cm3, while the midsole density is mostly 0.45g/cm3.


    For safety shoes, the two layer adhesion exceeds the required standard, and the middle sole can be made of more thin layers.


    Thermoplastic polyurethane (TPU)


    This kind of material combination is not as good as publicity. This is because the sole density thermoplastic polyurethane outsole will not make the shoes more comfortable. The density of thermoplastic polyurethane is about 1g/cm3, which means that such shoes can not produce good sound insulation effect on footsteps. In addition, it is often very difficult to glue thermoplastic polyurethane on upper, so thermoplastic polyurethane outsole is not used frequently.


    Thermoplastic polyurethane / thermoplastic polyurethane (TPU/TPU)


    Because of the new development of material suppliers, these shoes are becoming more and more interesting. The thin thermoplastic polyurethane outsole and blown thermoplastic polyurethane soles will become a new material combination in the future. More or less, its principle has something in common with polyurethane / polyurethane production materials. The hardness of thermoplastic polyurethane covers a large area. In the shoe making industry, the hardness of Shaw is from 55A to nearly 85A. As a matter of fact, its wear resistance and skid resistance are excellent. Thermoplastic polyurethane gives a good carving process on sole. Blown thermoplastic polyurethane can now be perfused, which means manufacturers can skip the production of materials from thermoplastic polyurethane to thermoplastic polyurethane / thermoplastic polyurethane in the short term.


    Compared with polyurethane, thermoplastic polyurethane has great advantages in processing. Thermoplastic polyurethane can be bagged and granulated when feeding. It does not involve professional knowledge related to chemistry, and operators do not have to adjust a large number of parameters for different machines when operating machines.


    With the new DESMA technology, Shoemaking equipment It can ensure that the industrial rubber, thermoplastic polyurethane and activated polyurethane (PUR) technology in single mechanical system is most economical.


    Whenever problems arise in production engineering, materials, tooling design and process parameters, which are consistent with the expected footwear types and the current production structure, DESMA can provide comprehensive expertise, qualified professional advice and customer centred project planning.


    Polyurethane (PU)


    The simplest shoes are made of single density polyurethane sole. Polyurethane soles must have two tasks: first, we must feel comfortable, and the sole is light. Second, it is also a very important point, that is, safety problems, such as skid resistance. In fact, it is difficult to integrate these two functions. In most cases, only one of these functions can produce the correct performance.


    The density of polyurethane soles is mostly around 0.8g/cm3. Casual shoes Industry. The production of single density shoes is very simple and effective, but the products produced are still high-grade commercial shoes.


    Polyurethane / polyurethane (PU/PU)


    Over the past 20 years, the footwear industry has been producing double density polyurethane shoes using direct injection molding machines.


    The combination of compact polyurethane outsole and light and comfortable middle sole makes it possible for shoe sets to be made of two characteristics. A very compact material can be used to make the outsole, making it more resistant to abrasion and giving good skid resistance and grease resistance. The foam polyurethane system can be used to make the middle sole, so that the shoes will be more comfortable and even lighter.


    The production of shoes is different from that of single density shoes. The first step is to squeeze the dense outsole into the closed mold. After a certain reaction, the upper part of the bottom and the bottom of the outer part are molded by injection, and a simple shoe sample is successfully delivered through the gluing between the sole and the upper.


    In most cases, such material combinations are used for safety. footwear industry Because in this industry, we should not only seek comfortable appearance, but also have good characteristics. But in casual footwear, you can also find many interesting designs using polyurethane / polyurethane material combinations. The density of compact outsole is mainly 0.9g/cm3, while the midsole density is mostly 0.45g/cm3.


    For safety shoes, the two layer adhesion exceeds the required standard, and the middle sole can be made of more thin layers.


    Thermoplastic polyurethane (TPU)


    This kind of material combination is not as good as publicity. This is because the sole density thermoplastic polyurethane outsole will not make the shoes more comfortable. The density of thermoplastic polyurethane is about 1g/cm3, which means that such shoes can not produce good sound insulation effect on footsteps. In addition, it is often very difficult to glue thermoplastic polyurethane on upper, so thermoplastic polyurethane outsole is not used frequently.


    Thermoplastic polyurethane / thermoplastic polyurethane (TPU/TPU)


    Because of the new development of material suppliers, these shoes are becoming more and more interesting. The thin thermoplastic polyurethane outsole and blown thermoplastic polyurethane soles will become a new material combination in the future. More or less, its principle has something in common with polyurethane / polyurethane production materials. The hardness of thermoplastic polyurethane covers a large area. In the shoe making industry, the hardness of Shaw is from 55A to nearly 85A. As a matter of fact, its wear resistance and skid resistance are excellent. Thermoplastic polyurethane gives a good carving process on sole. Blown thermoplastic polyurethane can now be perfused, which means manufacturers can skip the production of materials from thermoplastic polyurethane to thermoplastic polyurethane / thermoplastic polyurethane in the short term.


    Compared with polyurethane, thermoplastic polyurethane has great advantages in processing. Thermoplastic polyurethane can be bagged and granulated when feeding. It does not involve professional knowledge related to chemistry, and operators do not have to adjust a large number of parameters for different machines when operating machines.


     


    Source: China rubber net
     
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