Revealing The Production Technology And Classification Of Sports Shoes Air Cushion

< p > ignoring the research on air cushion not only affects the promotion of added value of sports a target= "_blank" href= "http://www.91se91.com/" > shoes < /a >, brings inconvenience to customers, but also restricts the deep development of China's footwear industry, affects the status of China's footwear industry in the world, and hinder the development of high-end products.

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< p > classification by material < /p >

< p > different materials have great influence on the performance of air cushions.

At present, the most commonly used air cushion is < a href= "http://www.91se91.com/news/index_x.asp > material > /a > polyurethane (PU) polyvinyl chloride (PVC), thermoplastic polyurethane (TPU) and so on.

The following are mainly about polyurethane insole air cushion and polyurethane hollow molding air cushion, PVC soft air cushion and PVC rigid air cushion, thermoplastic polyurethane air cushion and thermoplastic polyurethane air cushion, and their advantages and performance.

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< p > polyurethane (PU) < /p >

< p > polyurethane materials have good comprehensive properties.

It not only has high strength, high elasticity, high compression strength, excellent tear resistance, wear resistance, oxygen resistance and ozone, solvent resistance, such as non-polar solvents hexane, heptane, paraffin oil, etc., has little effect on polar solvent polyurethane, even under high temperature, the swelling of polyurethane in non-polar solvents is also very small, and the quality is light, which is very meaningful for lightweight design of shoes.

However, polyurethane has poor water resistance and high internal heat generation.

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< p > polyurethane < a href= "http://www.91se91.com/news/index_x.asp" > insole > /a > air cushion is mostly hidden air cushion, fixed between the insole and the middle sole.

The overall thickness of the air cushion is thin, and the internal pressure is small. It is generally used for sports shoes with low requirements for shock absorption design.

Such as golf shoes, badminton shoes and so on, are hidden air cushion design.

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< p > polyurethane hollow molding air cushion is the most widely used air cushion at present. The air cushions used by Nike and other famous brand air cushion series sneakers are almost all polyurethane air cushions.

It can be designed according to the specific location of different parts, different functions and age of the wearer. It can be designed into different internal pressure, different structure, different thickness and different colors. It can achieve different damping effect and different energy regression function, and it can echo with the design of other parts of the shoes, so that the visual effect and sensory effect can be synchronized.

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< p > < polyvinyl chloride (PVC) < /p >

< p > PVC raw materials have wide sources, low cost, mature production technology, and can produce pparent and opaque products and soft and hard products according to the different additives and the amount of auxiliaries. Therefore, the color changes can quickly echo the color changes of the moving shoes.

However, the impact strength of PVC is low, thermal deformation is large, and resilience is not as good as polyurethane.

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< p > PVC soft air cushion series, similar to thermoplastic polyurethane pull pipe series in design and use parts. They are mostly used for heel parts. Different color patterns can be designed to achieve double effects of visual effects and visual effects.

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< p > polyvinyl chloride hard < a href= "http://www.91se91.com/news/index_x.asp" > air cushion < /a > series, adopt the polyvinyl chloride material with large hardness, and design the compressed air cushion of various colors.

Generally used for heel parts, modeling similar to the honeycomb structure.

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< p > thermoplastic polyurethane (TPU) < /p >

< p > thermoplastic polyurethane is the first polymer material which has both elastic properties and plastic plasticity. It has excellent physical and mechanical properties, such as tensile strength and elongation.

Lower, hard (Shao 50~83) tensile strength is high, tear resistance is good, in a wide range of temperature has flexibility, wear resistance and puncture resistance is excellent; crack growth resistance is the best in all thermoplastic materials; anti longitudinal bending strength and low impact strength is high; resilience and cutting resistance is good; oil resistance and weather resistance is good, especially for mineral oil at normal temperature, diesel oil, under the action of ultraviolet light will yellowing, but has little effect on the performance, adding some UV absorbers can reduce yellowing phenomenon; sensitive to acid and alkali, easy to be eroded, test performance can be simulated immersion test. Its chemical structure is different from that of shore hardness, and the tensile strength varies from 25 MPa to 70 MPa, and soft (Shao A70 to 85).

In addition, like all thermoplastics, thermoplastic polyurethane can be recycled. Adding a small amount of leftovers to the new thermoplastic polyurethane will not have any effect on the quality of the product.

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< p > thermoplastic polyurethane pipe air cushion, mainly by virtue of thermoplastic polyurethane excellent physical and mechanical properties, high resilience, anti piercing performance, crack growth resistance, high impact strength.

The general production of the pull pipe < a href= "http://www.91se91.com/news/index_x.asp" > air cushion < /a > used in the heel part, shock absorption function is remarkable.

Moreover, the color can be varied, and the rich and colorful effects add to the visual effects of the sports shoes.

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< p > thermoplastic polyurethane air cushion, the image should be called "liquid pad", but because its function is mainly shock absorption, so it belongs to air cushion type, which uses the thermoplastic polyurethane's oil resistance and high elasticity.

It is commonly used in the heel and waist parts to absorb and stabilize the foot.

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< p > classification according to the location of structure < /p >

< p > > whole palm air cushion < /p >.

< p > the outline is the same as the outline of the outsole, and the exposed air cushion is opened outside the window. The thickness of the air chamber at the joint with the bottom edge is about 10-20mm, the wall thickness is 1-1.4mm, and the resilience is high. In the middle part, the thickness of the air chamber is small, about 2-6mm, the elasticity is poor, and the supporting effect of the cross beam is in the middle part. The thickness of the center part of the center is about 2-3mm, which acts as a coupling.

The thickness of the front palm is thinner, generally 10 mm, the heel thickness is generally 20mm, and the whole air cushion from the back to the front is a wedge-shaped structure.

The thickness of the hidden full palm air cushion is generally 1-1.2mm, and the thickness of the gas chamber is generally 2-4mm, and the thickness of the solid part is generally the same as the edge thickness of 1-1.2mm.

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The structure of the series of "P" has the following 3 kinds: < /p >

< p > 1, the edge of the gas chamber is a whole structure; < /p >

< p > 2, the margin chamber was disconnected from the metatarsophalangeal joint to 3 air chambers; < /p >

< p > 3, in the metatarsophalangeal joint and the lumbar part are disconnected, the entire edge is divided into 6 air chambers. The thickness of the air chamber at the waist is thickest, which can reach 23mm, which can absorb shock and stabilize the support.

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< p > half palm air cushion < /p >.

< p > from the metatarsophalangeal joint to the heel part, the thickness of the air chamber at the lumbar fossa is the thickest part of the air cushion, which is the same as the design function of the whole palm air cushion, and plays the role of shock absorption and supporting stability.

The thickness of the air chamber at the waist socket is 20-25mm, the heel part is generally 18-20mm, and the middle part and the solid part are of the same size as the whole palm < a href= "http://www.91se91.com/news/index_x.asp" > air cushion < /a >.

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< p > follow up air cushion < /p >.

< p > with the air cushion structure, various shapes and rich colors, it is the most commonly used air cushion design.

There are several common shapes: < /p >

< p > 1, the overall shape is similar to the human hind foot, and the structural differences are mainly in details: the edge part is a gas cell of the tube, the middle part is solid; the whole is a uniform gas chamber, only the solid part with solid circular, oval, semicircle or other shapes is inserted in the middle part; the whole palm air cushion is broken off from the waist socket, and the rest design is invariable; the edge of the air chamber is designed like a saw tooth, the rest parts are designed like other air cushion designs; only a thin air bag similar to the heel shape, and has no other ornament, which belongs to the concealed air cushion design.

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< p > 2, the shape of the projection is similar to a rectangle: the thickness of the air chamber on both sides is large, generally 15-20mm, and the wall thickness is 1-1.2 mm; the thickness of the air chamber in the middle is generally 3-6mm, the wall thickness is 1.2-1.5mm, and the solid part is thick 2-3mm.

The whole air cushion is like a rectangular air bag. The thickness of the air chamber in the middle and two sides is the same, the wall thickness is the same, it is communicated with the air chambers on both sides, and there is no solid part connection. The shape is cuboid, and the design and usage are all the same as the following oval air cushion.

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< p > 3, oval air cushion: for the heel side or the lumbar part, heel parts for each shoe with two, one for the waist.

There are 2 specific structural changes: < /p >

< p > 1. There are two to three gas columns evenly distributed in the middle of the air cushion. The main shock absorption and rebound effect is also dependent on these gas columns; < /p >

< p >, the whole air cushion is made up of two air bags connected through the column gas chamber without gas column.

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< p > 4, tubular air cushion: the technology of drawing pipe is usually made of polyvinyl chloride and thermoplastic polyurethane. The color can be changed according to the needs. Transparent effect, fog surface effect and laser effect can be adopted. Different shapes and lengths can be applied to different parts, such as the sides of the forehand, the sides of the heel or the heel of the whole lap.

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< p > 5, oval air cushion: divided into two types: open window and hidden type. The open window design has gas column. The hidden type is only an air bag, which can be filled with gas and can also be poured into oil and other liquids.

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< p > 6, circular air cushion: generally hidden design, can be filled with gas or oil and other liquids.

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< p > front palm air cushion < /p >.

< p > thin, the damping and resilience are smaller than those of the heel part. There are 2 kinds of shapes: < /p >

< p > 1, the shape of the front foot resembling the foot: the design of the metatarsophalangeal joint is specially designed, and the rest is the same as the front palm part of the whole palm air cushion.

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< p > 2, tubular air cushion: the diameter of the pipe is smaller than that of the rear air cushion, and the rest is the same as the rear tubular air cushion.

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< p > waist socket air cushion < /p >.

< p > thicker, supporting and stabilizing.

Most of them are concealed, oval and airless, and can also be rhombohedral with smooth edges.

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< p > Nike several different structure of air cushion shoes < /p >

< p > the thermoplastic polyurethane air cushion used by Nike is classified according to the position at the bottom: < /p >

< p > bottom air cushion sole < /p >

< p > this is the earliest air cushion shoe. The sole of the sneaker has a thicker structure and has designed a series of independent gas chambers similar to the six corners honeycomb structure, which can be used in the front and rear parts.

Honeycomb structure has long been proved to be the best geometric structure in nature, and has the advantages of high strength and light weight. This kind of design has great significance in shock absorption and large bottom lightening.

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< p > < Design > < /p >

< p > this type of air cushion is mainly made up of air cushion, which is filled with gas or liquid inside. It is also the most popular design method of air cushion shoes at present.

The air cushion is usually placed in the heel or the front palm.

The design of Nike's air cushion shoes is also dominated by plug design.

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< p > > the design of the insoles is less than /p.

< p > generally, the air cushion is placed on the front part of the insole and the heel and so on, where the shock absorption is emphasized. The air cushion can be placed directly under the upper or lower part of the movable insole according to the need, and the direct contact with the foot can achieve obvious comfort.

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< p > classified according to internal substances: < /p >

< p > air cushion > /p >.

< p > this is the commonly used air cushion nowadays. Through blowing or drawing process and combined with specific requirements, a certain pressure air is enclosed in different shapes of air cushions to achieve the function of shock absorption and energy return. The process is simple and the source of gas is wide.

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< p > inert gas cushion < /p >

< p > seal the inert gas in the air cushion and place it in any part of the bottom.

This is a new light cushioning and shock absorption system, which limits the cushioning performance and reduces the weight of shoes.

The lighter the shoe, the more unaware it is on the foot, which means lightness, speed and comfort.

KangFu's all star air cushion basketball shoes are made of helium (7 times lighter than air) air cushion. According to the test, the air cushion basketball shoes have the same cushioning effect and stability effect. Thermoplastic polyurethane frame and fracture resistant nylon mesh cloth make the shoe's air permeability and supporting power better. Thermoplastic polyurethane pparent film with its unique shoe upper material design makes helium air cushion a new thing at a glance, light and comfortable.

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< p > liquid cushion < /p >.

< p > a cushioned cushion similar to air cushion made up of a closed air chamber or several closed but interconnected small chambers. The liquid inside can be poured into oil or silica gel liquid as needed, and can be used for shock absorption in the heel and back.

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< p > silicone pad > /p >

< p > design is similar to liquid cushion, but the liquid of silicone or oil is changed into silica gel ball.

The silica gel ball is enclosed in a closed flat gasbag, and is made into a shock absorbing air cushion and inserted into the middle plug. It can be placed in the heel and forehand parts according to the need.

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< p > classified according to inflatable mode < /p >.

< p > molding air cushion < /p >

< p > this type of air cushion is usually sealed in the process of production according to different parts and different materials filled with different pressure gas or filled with different volumes of liquid, and the combination with the bottom is a combination.

In other words, the pressure of the air in the air cushion or the volume of the liquid is fixed after the air cushion is molded. The present production process is applicable to different types of sports shoes for different age groups, different occupations and different gender groups.

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< p > adjustable air cushion < /p >.

< p > the internal conditions of these air cushions can be changed according to different sports demands and different foot conditions of the wearing people, the location of the air cushion device and the size of the contact area.

The general device is also used for supporting parts in the middle bottom. It is usually a set of air cushions with inflatable and deflating valves that can inflate and regulate the internal pressure. When used, the air pressure can be properly pressed according to the number of charging valves or the number of bleed valves can get the proper air pressure, so that the feet can get the best fit and comfort, and can firmly support the instep and foot parts to avoid sports injuries.

Originally designed by Reebok Co, it is also a popular air cushion design.

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< p > Qingdao Binxing group has also studied the traditional Chinese medicine, ergonomics, materials mechanics and other disciplines, using high-grade synthetic materials and high elastic and low density new shoe soles, and designed a pair of shoes with airbag and single valve.

This shoe not only has sole massage and shock absorption function, but also has the function of sole ventilation, which can complete the exchange of the air in the shoes during the exercise, so that the sole environment can be in a good state of refreshing at the same time with good shock absorption and protection, and is conducive to improving the health of the human body.

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< p > < /p > according to the shape of air cushion.

< p > > Zoom Air < /p >

< p > generally used for golf shoes and straight row pulley shoes, and so on, which do not need shock absorbing functions, are thin, and the induction to the ground is more direct, so as to reduce the distortion feeling caused by the shoe being too high from the ground.

In the gas chamber, a nylon solid fabric with good elasticity function is placed. These fabrics are very tightly knitted with high reactivity and will rebound immediately after being pressed, so that the athletes have close shock proof guarantees and close to the ground, providing excellent touch feeling and fast speed feeling.

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< p > > Air Max < /p >

< p > shock absorption is strong and thick, which can share the strength of athletes. It is also commonly used in sandals with young people jumping or walking along the gravel road caused by discomfort.

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< p > > Turned Air < /p >

< p > modeling on the basis of the original Air Max and adding a few semicircular spheres, can buffer the impact from the ground and provide proper stability, so that the air cushion is more elastic like spring, providing the best shock absorber protection.

In addition, because the semicircular sphere acts vertically and upward, it can stabilize the springback of the air cushion. Even if the left foot or the right side of the foot fall, it will restore the feet up to the normal position, so that the movement of the feet is more stable.

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