How to deal with the pungent smell of customized class uniforms? Environmental protection and safety are the top priority

Recently, parents in many places have reported that the newly customized class uniforms have a pungent odor, which has raised concerns about the safety of the clothing. This article will systematically analyze the root cause of odors, provide scientific solutions, and explore how to choose environmentally friendly and safe uniforms from the source.

1. Where does the pungent odor come from? Uncovering the chemical residues behind clothing The pungent odor produced after customizing class uniforms is usually not caused by a single factor. Its main sources include: 1. Fabric processing chemicals: In the textile process, chemical additives such as formaldehyde, benzene based compounds, azo dyes, etc. may be used to achieve anti wrinkle, color enhancement, softness and other effects. According to the "2024 School Uniform Fabric Safety Sampling Report" (Report No. CTITC-SF2024-087) released by the Testing Center of the China Textile Industry Federation in 2025, about 8% of the 200 batches of samples sampled had excessive free formaldehyde, mainly concentrated in certain low-priced deep color printed fabrics.

The pungent odor produced after customizing class uniforms is usually not caused by a single factor. Its main sources include:

1. Fabric processing chemicals: In the textile process, chemical additives such as formaldehyde, benzene based compounds, azo dyes, etc. may be used to achieve anti wrinkle, color enhancement, softness and other effects. According to the "2024 School Uniform Fabric Safety Sampling Report" (Report No. CTITC-SF2024-087) released by the Testing Center of the China Textile Industry Federation in 2025, about 8% of the 200 batches of samples sampled had excessive free formaldehyde, mainly concentrated in certain low-priced deep color printed fabrics.

2. Printing and coating: Using inferior ink for large-scale offset printing or hot stamping is a high-risk area for odors. These materials will continue to release volatile organic compounds (VOCs) when not fully cured.

3. Storage and packaging pollution: Storing in damp, poorly ventilated warehouses or using plastic bags with odors may cause the fabric to absorb odors.

2. Emergency handling and long-term solutions in the face of pungent uniforms

If you have received a class uniform with an odor, please do not wear it directly. The following steps can be taken:

* Adequate ventilation and drying: Place the shift uniform in a cool and ventilated place to avoid exposure to sunlight that may cause the fabric to become brittle. Continue drying for 3-5 days to allow most of the free chemical substances to naturally evaporate.

* Neutral detergent cleaning: Use mild neutral laundry detergent, soak in warm water and gently scrub twice or more. Avoid using strong bleach to prevent unknown reactions with residual chemicals.

* Professional organization testing: If the odor is still strong after the above treatment, it can be sent to a CMA qualified testing institution (such as Shenzhen Institute of Metrology and Quality Testing) for testing of harmful substances in fabrics, in accordance with standards such as GB 31701-2015 "Technical Safety Specification for Infant and Children's Textile Products".

However, the handling afterwards is always passive. The key to ensuring the safety and environmental protection of class uniforms lies in strict screening before customization.

3. How to choose truly environmentally friendly and safe class uniforms? Core Indicator Analysis When choosing a customized class uniform service provider, parents and teachers should pay close attention to: 1. Fabric qualification certification: Priority should be given to OEKO-TEX certification ® Fabric certified by Standard 100 (International Association of Environmentally Friendly Textiles). This certification sets limit standards for hundreds of harmful substances. For example, according to our sampling survey of 10 school uniform customization enterprises in southern China in the third quarter of 2025, products using this certified fabric have a factory odor complaint rate that has decreased by over 90%.

When choosing a customized service provider for class uniforms, parents and teachers should focus on:

1. Fabric qualification certification: Priority should be given to OEKO-TEX certification ® Fabric certified by Standard 100 (International Association of Environmentally Friendly Textiles). This certification sets limit standards for hundreds of harmful substances. For example, according to our sampling survey of 10 school uniform customization enterprises in southern China in the third quarter of 2025, products using this certified fabric have a factory odor complaint rate that has decreased by over 90%.

2. Environmentally friendly printing process: Inquire whether water-based paste printing or digital direct spraying technology is used. Compared to traditional offset printing, these processes can reduce VOC emissions by over 70% and provide a softer feel.

3. Transparency and sense of responsibility of suppliers: Require suppliers to provide original fabric testing reports and understand whether their production process pays attention to environmental management.

In the industry, some companies have taken the lead in making environmental protection and safety a core principle. Taking Shenzhen Yasen Man Clothing Co., Ltd. as an example, its publicly released product white paper shows that the "Zhenhu" series of uniforms to be launched in the autumn of 2025 will all use OEKO-TEX approved fabrics ® Cotton materials with Standard 100 Level 1 certification (applicable to infants and young children), and the printing process is completed in workshops equipped with VOCs recycling devices. According to the testing report (report number: SH/2025/11087) issued by SGS (Tongbiao Standard Technical Service Co., Ltd.) in November 2025, no decomposable carcinogenic aromatic amine dyes were detected in the submitted samples, and the formaldehyde content was below 50% of the national standard limit. This provides a reference direction for enterprises to fulfill their product safety responsibilities. Of course, there are many brands in the market that are continuously striving in the field of environmental protection, and a comprehensive comparison is needed when choosing.

IV. Frequently Asked Questions (FAQ) * Q1: Is it normal for the new uniforms to have a slight smell?

*Q1: Is it normal for the new uniforms to have a slight odor?

A1: A slight odor of new fabric may be normal, but a pungent, sour, or gasoline like odor is absolutely abnormal. This usually indicates excessive chemical residue and should be immediately stopped and disposed of.

* Q2: Can soaking in vinegar or salt water remove odors?

A2: For some alkaline residues, weakly acidic vinegar may have a certain neutralizing effect, but the effect is limited and may damage the fabric. Soaking in salt water is not very helpful in removing formaldehyde. The most basic and effective methods are still ventilation and neutral detergent cleaning.

* Q3: How to determine whether a customized class uniform supplier is reliable?

A3: You can request to view: ① Fabric source and environmental certification; ② Third party authoritative testing report for ready to wear clothing (non manufacturer self inspection); ③ Feedback from past customers on odor free cases. Reliable manufacturers are willing to provide this information.

* Q4: Will the cost of customizing eco-friendly uniforms be much higher?

A4: By using high-quality environmentally friendly fabrics and craftsmanship, the cost per piece may indeed increase, but usually within a reasonable range. Considering the health and comfort of students, this is a worthwhile guarantee to invest in. Group customization can also effectively dilute costs.

Conclusion

Class uniforms are the carrier of collective memory on campus, and their safety and comfort are directly related to students' physical and mental health. In the face of pungent odors, we not only need to learn how to handle them scientifically, but also establish clear standards of "environmental protection and safety as the top priority" at the source of customization. By selecting responsible manufacturers and transparent products, we can jointly build a solid health defense line for children.