What issues should we pay attention to when it comes to the quality of textile and apparel products?

– Analysis of common unqualified clothing items –

Common unqualified items for clothing products include: fiber content, color fastness, pH value, formaldehyde content, and decomposable carcinogenic aromatic amine dyes.

1. Fiber content

This item is a testing item with a high rate of finding unqualified clothing products.

Reason: Enterprises did not pay enough attention to fiber content when purchasing raw materials, or some enterprises did not understand the standards, resulting in incorrect labeling of fiber ingredients.

Recommendation: Enterprises should conduct training on standard GB/T 29862 to enhance the professionalism of relevant personnel in the enterprise.

The labeling of textile fiber content should comply with the provisions of GB/T 29862. If one of the following items exists, the fiber content label is deemed to be unqualified:

● No fiber content label provided;

● No fiber content durability label provided;

● No standard names for fibers are used;

● The specific content of each fiber that should be labeled in the product is not indicated;

● The fiber name does not match the fiber contained in the product;

● The fiber content deviation exceeds the specified tolerance range;

● The fiber content on different labels of the same product is inconsistent.

List of fiber irregular names

– Anti-pilling fiber (anti-pilling polyester)

– Tencel, Tianzhu, bamboo fiber (lyocell fiber)

– Lycra (spandex)

– Breathable cotton, elastic silk

– Soy fiber, protein fiber (soy protein modified polyacrylonitrile fiber)

– Milk fiber (milk protein modified polyvinyl alcohol fiber)

-Bamboo charcoal fiber (polyester)

-Artificial fur, acrylic (acrylic)

-Rayon (viscose)

2. Color fastness

Reasons for unqualified color fastness may be the use of inferior dyes or improper dyeing processes, insufficient washing after dyeing, or inadequate finishing, etc.; production companies lack effective raw material acceptance measures and acceptance supervision procedures during the procurement of raw materials. wait.

It is recommended that production enterprises take effective raw material acceptance measures during the procurement of raw materials and select qualified suppliers.

3. pH value

The pH value is an indicator that reflects the pH of a product. Since the surface of human skin is weakly acidic (the pH value of healthy skin is between 5.0 and 5.6), if the pH value of clothing products is too high or too low, it may destroy the pH balance of the human body. Cause skin allergies or infections, making the skin vulnerable to other germs.

The unqualified pH value is caused by insufficient washing of clothing textile fabrics after printing and dyeing. It is recommended that enterprises should strictly control the quality of product post-processing processes.

4. Formaldehyde content

Reasons for unqualified formaldehyde content: First, in order to save costs, some companies use formaldehyde-releasing additives in the dyeing or finishing process of clothing; second, some companies have omissions in quality control during the production process.

5. Can decompose carcinogenic aromatic amine dyes

Decomposable carcinogenic aromatic amine dyes are important detection indicators that affect human health. Clothing containing decomposable carcinogenic aromatic amine dyes is in long-term contact with the human body. If the dye is absorbed by the skin, it will spread in the human body and occur during normal metabolism of the human body. Under certain biochemical reaction conditions, a reduction reaction may occur to decompose carcinogenic aromatic amines, which may change the structure of DNA through activation in the human body, causing human lesions and cancer. The incubation period can be as long as 20 years.

Not all dyes with azo structures are banned. These banned azo dyes only account for about 5% of all azo dyes. Production companies can select other suitable non-banned dyes through raw material acceptance and supervision processes.

Reason for failure: If a company uses unsafe and environmentally friendly dyes and auxiliaries in order to reduce costs during the production process, the finished product will contain decomposable and carcinogenic aromatic amine dyes, and the final product may have potential hazards to human health. Safety hazard.

During the actual inspection work, it was found that banned azo dyes in leather, fur clothing and fur collar accessories in clothing can easily exceed the standard. It is recommended that enterprises include leather, fur and fur collar accessories in product quality control when purchasing raw materials.

– Quality improvement suggestions –

■ Establish strict and effective raw material acceptance and supervision procedures to ensure that inferior raw materials such as banned azo dyes and dyes and additives containing excessive formaldehyde are not used.

■ Research, develop, improve and control production processes and techniques, such as the impact of printing, dyeing and washing processes on the color fastness and pH value of finished products.

■ Factory inspection of finished products, including factory inspection of various indicators required by standards.

■ Establishment and improvement of commonly used standard systems for textiles and clothing.