Why Did The Shoe Break Or Crack On The Side Of The Shoe Several Times?

Shoes appear just a few times.

Fracture or surface cracking may result in failure of the folding resistance of the shoes.

Recently, from the Hunan Provincial Bureau of industry and commerce, it was found that after sampling 66 samples of shoes from 48 distributors, the 28 group failed and the pass rate was only 57.6%.

It is understood that the sampling coverage covers 3 cities and prefectures in Changsha, Zhuzhou and Xiangxi Autonomous Prefecture of Hunan. The unqualified brands include famous brands including seven wolves, Jin Wang, Kangnai, old man, red ant, flower king, Shuai Kelong and beer man.

After testing, the unqualified items are mainly shown in folding resistance, hook length, hook mark and peeling strength.

From the results of spot checks, the flexural performance is

In the hardest hit area, it is easy to break whether the sole is evaluated, whether it is easy to crack the surface of the material, crack the pulp and make flexural parts of the bottom part easy to open, etc.

28 groups of substandard samples of shoes, 23 groups of products in the project problems.

The leather shoes are usually made of long strips of metal and used for middle and high heels.

On the other hand, installing the bottom and half insole is the "backbone" of shoes, which plays a role of bearing and balancing, and determines the stability and comfort of shoes when they wear them.

Mechanical properties of hooks are important indicators of footwear safety.

Failure to qualifying will cause the overall deformation and instability of leather shoes, especially high heels, which will greatly reduce the comfort and safety factor of leather shoes, and even lead to serious safety problems such as sprained feet and broken soles.

The mark is not standard. It means that the goods do not conform to the standard requirements. The standard requirement is to use the Arabia numeric numbers to indicate that it is suitable for the high or applicable range. Its function is to prevent misuse of unsuitable steel hooks.

Peel strength is the main index to indicate the fastness of the upper and the outsole. The shoes with unqualified peel strength are easy to open and split during the wearing process.