Interpretation Of Children's Shoes Standard

Mothers are not only required to take care of their baby's everyday shoes. Children's shoes Of Choose And to maintain knowledge, we should understand children's shoes to some extent. standard We know more about it. QB/T 2880-2007 children leather shoes The industry standard is children's leather shoes. market A good rule to promote the production of children's leather shoes. quality And the development of the market is of great significance. Consumer Strong protection of rights and interests. The following is an introduction.

　　 Scope of application

The "children's leather shoes" industry standard stipulates the technical requirements, testing methods, inspection rules, packaging, transportation and storage of children's leather shoes made of natural leather, synthetic leather and synthetic leather by gluing, sewing, molding, vulcanizing, injection and pouring processes.

Textile or other materials for children, the same production process of children's shoes can be referred to the implementation of this standard.

The standard has clearly defined the scope of application, not only for children's shoes that are commonly worn, but also for infants and young children, which has changed the situation that there is no standard for such shoes in the past.

　　 The standard specifies the definition of children's leather shoes and infant footwear.

Infant shoes infants' footwear: refers to shoes number not more than 170mm, for children under 3 years old wear shoes.

Children's leather shoes children 's leather shoes: refers to the shoe number not more than 250mm, for children between 3 and 14 years of age wear shoes.

The age division in the definition is based on international practice and medical classification method, with children aged 3 years and younger than 3 years old as infants, and 3 to 14 years old as children. In addition, considering the rapid development of infants and children, and adding the shoe size range in the corresponding definition, the definition is more practical.

　　 Regulations on odor grades and inspection methods

This standard specifies the grade and testing method of the odor of shoes. This is the first time that China has added the peculiar smell to the footwear product standards. So far, "children's leather shoes" is the only standard to add odor requirements. The reason why shoes produce peculiar smell is that most of them contain harmful substances such as formaldehyde, benzene and sulphide, which are harmful to human health. Considering that children and infants are a special group, the smell of children and infant shoes is required. In the method of odor detection, the samples were placed in the dryer for 24 hours, and then the odor level was determined. The judges set strict requirements: at least 3, the judges should be trained and assessed professionals. According to the results of more than half of the judges, the maximum rating is taken as the result of the test.

　　 Determination of shoe outsole hardness

The hardness of the bottom is regulated. Unlike other standards, the hardness of children's leather shoes is a range value, because the soft or strong sole is very bad for children's foot development, so the hardness is specified as 45? 60 A.

　　 Colour fastness to perspiration

In the rubbing color fastness of lining and inner pad, sweat is used to rub, because the sweating of children's feet is more than that of adults. The sweat volume of children's feet is about 20g in 8 hours. If there is a strong amount of exercise, the amount of sweating will increase dramatically. Therefore, the color fastness requirement of children's wear shoes is good. {page_break}

　　 Limit on quantity of substances

Children's foot health should not only pay attention to physical performance, but also attach importance to the chemical safety performance of shoes materials on foot and even the whole body health. Therefore, this standard puts forward safety requirements for the chemical properties of children's leather shoes. Although the "children's leather shoes" standard is the first time in China's footwear product standards to add safety performance indicators, but the revised standards of footwear products have been stipulated in the chemical performance. This is necessary to improve the competitiveness of China's footwear products in the domestic and foreign markets, while reducing trade frictions and eliminating trade technical barriers.

The limit requirement for this standard includes the formaldehyde content of six, not more than 10mg/kg, decomposable aromatic amine dyes banned, free or partially hydrolyzed: Children's leather shoes are not more than 150mg/kg, infant shoes are not more than 150mg/kg. The content of decomposable aromatic amine dyes in Cr (VI), textiles and leather is consistent with the technical indicators of EU 2002/231/EC footwear ecology. Regarding the formaldehyde content index, 2002/231/EC stipulates that the textile components in shoes are not more than 75ppm, and the leather parts are not more than 150ppm, GB 18401-2003, "National Textiles basic safety technical specification" and GB 20400-2006 "leather and fur harmful substances limit", which stipulates that the formaldehyde content of category A (baby products) is not more than 20mg/kg, B class (products directly contact with skin) is not larger than 75mg/kg, C class (non direct contact with skin products) is not more than 300mg/kg, according to China's national conditions and industry development status, and children's leather shoes and infant shoes have different requirements for limit material limit, so the formaldehyde and children's shoes are separated from the children's leather shoes in the formaldehyde content index, which stipulates that the formaldehyde content of children's shoes is not greater than that of the 150mg/kg, and the formaldehyde content of children's shoes is not greater than that of the children.

The EN 14602-2004 "test method for evaluating the ecological indexes of footwear" is adopted in the limited sampling of limited substances. The standard is the supporting standard of 2002/231/EC, which stipulates the necessary test methods. During sampling, the leather and textile components are separated, and the corresponding chemical analysis is carried out. If the shoes are made up of several types of leather or textiles, all leather is tested together, and all the textiles are tested together.

　　 There should be no defects affecting the wearing.

There are no technical requirements that affect the wearing defects. The increase of the terms makes the technical requirements more perfect, and also accords with the characteristics of the rich styles of shoes, various materials and technological changes in China.

　　 Determination of infant shoes and children's leather shoes

Infant shoes only require "sensory quality" and "chemical performance" in judging, and do not require "physical and mechanical properties". Considering the physiological characteristics of infants and young children, the amount of exercise is small, and the growth rate is relatively fast, and they can grow 3 numbers in one year. Therefore, the physical and mechanical properties of infant shoes need not be required. For children's leather shoes, there is no distinction between superior and qualified products. When judging, only two qualified and unqualified children are identified. This is also based on the development characteristics of children's feet. This increases the flexibility of the application of the standard. On the one hand, it avoids the excessive resources and wastes the resources at the same time, which is not conducive to the manufacture of inexpensive products and the development of enterprises. On the other hand, it also guarantees the rights and interests of consumers.

I believe that parents will know more about children's shoes purchase and maintenance knowledge, and will choose a pair of comfortable shoes for their babies in a more scientific and professional way.