Ben Wang, April 24th, from the last issue, we have added the Chaochao Classroom section. In the first part of the study, we invited the columnist experts to guide us to learn the related knowledge of shoes. In the first lecture, we focused on For everybody, we explained the materials used in shoe upper production and the role of these materials in the current major brand sports shoes. In this issue we continue the second lecture of the sneakers course. This time we will analyze the midsole part of the shoes and also the shoes. The key part of the stability is good and bad, hope readers and friends can like it. This version of the author / bully, Chen Kai
In the end: the heart of outstanding shoes
For an excellent sneaker, the midsole is equivalent to the suspension system of the car. The position of the midsole is between the upper and the outer sole. It is the most important part of the shoes, because the midsole can provide the best stability for the sneakers. Sex and shock absorbers have the function of absorbing impact force. In addition, major brands at the bottom of the center will also combine excellent cushioning techniques developed by them to support them. As we know most, they are also the most intuitive ones. Nike AIR professional air cushion, adidas bounce system, as well as early Reebok cellular cushioning and DMX technology, of course, also includes early Rodman favorite Converse exclusive oil pad technology. These advanced technologies have brought many classics that we have long remembered for the configuration and design of the midsole, which greatly enhances stability and protection. However, if advanced technology is thrown away, what materials in a good midsole should support and cooperate? This is the significance of our topic.
Commonly used material analysis in the bottom
EVA material
EVA is soft, lightweight, dexterous, and sneakers are also economical materials, so it is commonly used in middle and low-priced shoes. This type of midsole is usually made by steel cutting rather than perfusion. PU) or PHYLON method, so there is a huge savings in the cost, but such savings are not to abandon the effect of the practice. EVA midsole is commonly used in the bottom material, there is no doubt in the support and cushioning! The only drawback is the endurance. The EVA midsole will be flattened after long-term use because the air will be expelled. Once squeezed, the midsole will not return to its original shape, and it will indirectly lose its shock-absorbing function, so it is considered to be easier to be compressed. A material, in the selection of such shoes in the end of the midsole, do not buy too expensive style, and do not recommend the purchase of a strong friend!
PHYLON material
The PHYLON midsole material is similar to the EVA material in that it is an inexpensive medium and large midsole material. Its advantages are light weight and easy production. Compared with EVA materials, PHYLON is more sensitive to external forces. In terms of production, PHYLON is an evolution of EVA material. It heats and foams EVA plastic particles, and then injects them into a model of pressurized cooling and compression molding. The PHYLON material has excellent variability. According to the needs of each shoe design, the shape can be molded into a variety of different styles, but this material also has its outstanding drawbacks, that is, not easy to corrode environmental protection, easy to wrinkle and shrink at high temperatures.
PU material
The PU midsole material is the midsole material with the highest density, the most wear resistance and the stability in various materials. It is a solid midsole that dissolves the PU foam into a gel, and then pours it into a model and heats it to foam it. Material, PU surface has a smooth rubber feel, so it brings excellent stability, but also more tough, wear resistance greatly enhanced, but this material for many of our shoe collectors, has created a headache problem, because PU The midsole is yellowish when it touches the air for a long time, and many of the classic shoes are made of PU material as a component of the midsole, so it is very troublesome to maintain, only plastic, but from the development of shoes, PU It is indeed the most important midsole material, and is also the most suitable midsole material for athletic shoes.
Upper maintenance
For sneakers worn on weekdays, attention should be paid to their frequent cleaning and necessary maintenance. If conditions permit, it is better to have more than two pairs of shoes that can be worn alternately to avoid the overload of a pair of sneakers, so as to achieve the purpose of prolonging the wearing life.
1, leather uppers shoes: When the pure leather material or artificial leather shoes stained with dirt or dust, you can use a soft damp cloth to wipe the dirt on the upper surface of the dirt dry Q, and then use some special Leather shoe cleaners for shoe upper maintenance and cleaning.
★ Note: Do not use for patent leather uppers, otherwise it will be skinned.
2, patent shoes upper shoes: Because the patent leather is the use of two-story leather blanks after spraying various chemical raw materials after calendering or matte processing from the special leather, so if the temperature is too low if you are still wearing sports, you may have patent leather shoes The phenomenon of surface cracking, resulting in irreparable damage shoes. For the patent leather upper cleaning, try using a soft cloth dipped in water to wipe.
3. Sneakers with suede surface: For the dust on the surface of suede, sponge or nylon brush can be used. For stains that are not easily cleaned, special suede leather cleaning liquid is required for cleaning and maintenance.
4. Sneakers made of rayon knitted uppers: Due to the special nature of artificial fiber materials, these types of uppers cannot be cleaned with a simple wet cloth. In general, dust will accumulate in the interstices between the fiber fabrics, so that the dust between the fiber fabrics can be cleaned by the powerful suction of the dust collector.
Mid-care
The midsole of shoes is mostly made of the popular materials mentioned in our current course, so the following two methods can be used to clean this material:
1, you can use the drawing eraser for a simple cleaning, this method is only suitable for cleaning the surface of dirt.
2, can apply a little detergent on the midsole surface, and then use a soft brush for repeated brushing, and finally rinse the bubble with cold water. This method is usually used to clean the deep bottom of the stain, basically can be thoroughly cleaned.
Outsole maintenance
Outsole is the fastest part of the whole shoe wear, so proper maintenance of the outer bottom is essential for prolonging the service life. For foreign objects such as pebbles embedded in the net, it must be promptly cleaned up, so as not to cause damage to the outer bottom for a long time, but if With a chewing gum that is not easy to clean, you need to brush with a hard brush.
Insole maintenance
Theoretically, cleaning of the insole should be avoided as much as possible. For the odor situation, the odor can be removed from the shoe by placing it in a ventilated place, or using a footwear deodorant to remove the odor. However, if the insole is in poor condition, you need to use a soft brush and water to gently scrub, but it should be noted that, do not use chemical cleaners to clean, otherwise it may cause the surface of the insole fabric off.
Shoe collection
When the seasons alternate, we must properly place them in suitable places for the shoes that are not worn for the time being, so as to avoid unnecessary damage to the shoes. The more common method is to fill in the shoes with some desiccant and waste paper, prop up the shoes, and then use a vacuum bag or a special shoe film to wrap the shoes into the shoe box and place it in a dry place with enough space. However, it should be noted that the patent leather upper shoe should be attached to a piece of paper on the surface of the paint leather to prevent the shoe film from sticking to the surface of the paint.
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