07
2025
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02
What is the difference between plastic and rubber shoe soles?
Generally speaking, rubber soles are comfortable to walk on, but they can have an odor after prolonged use. The flexibility of rubber soles is quite strong; no matter how you knead them, they can return to their original shape, especially natural rubber is even stronger. Additionally, the smell when burned is unpleasant, and burnt rubber leaves a layer of carbon ash, while plastic soles leave no carbon ash when burned.
Rubber soles are a very traditional and older type of sole, but they excel in wear resistance and high-temperature performance. Plastic, on the other hand, is a new material that is lightweight and easy to mold.
Rubber is a natural material that comes from nature, thus it has green and environmentally friendly properties, which is why it is often used in the soles of safety shoes. Because it is made of natural rubber, the density is generally higher, making safety shoe soles heavier. Coupled with the special requirements of safety shoes, a complete pair of safety shoes can be quite heavy. However, in many cases, this type of safety shoe is still chosen because it has wear-resistant and anti-slip effects.
Plastic shoe soles originated in Germany during World War II. Plastic is an environmentally friendly material that is easily hydrolyzed, but it has excellent physical properties in normal dry environments. Firstly, it is lightweight and can be easily foamed and molded, allowing for various colors to be sprayed on. It is wear-resistant and fold-resistant, making it suitable for sandals, beach shoes, and casual soles. Since the low-temperature and anti-slip performance of general PU is slightly inferior, many cotton shoe soles made of PU are often fitted with TPR or PVC rubber. It is clear that safety shoe soles made from plastic materials are very lightweight, so customers require safety shoe soles made from this material to meet lighter demands. However, because safety shoes are a special product, they often have steel toes and steel plates added, which creates a large market demand for lightweight safety shoes.
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The key to a good pair of shoes lies in the sole.
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