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What are the new changes in jacket testing? Interpretation of the latest GB/T 32614-2023 standard

06Mar

What are the new changes in jacket testing? Interpretation of the latest GB/T 32614-2023 standard

According to the Announcement No. 9 of 2023 of the National Standardization Administration, the national standard GB/T 32614-2023 “Outdoor Sportswear Jackets” will be officially implemented on April 1, 2024, and will replace the old standard GB/T 32614-2016 “Outdoor Sportswear Jackets”. Let’s take a look at the changes in GB/T 32614-2023 (hereinafter referred to as the “new standard”).
GB/T 32614-2023 Outdoor sportswear jackets
1. Scope of application
Applicable to the identification of the quality of jackets made mainly of textile fabrics. Not applicable to jackets for infants and young children aged 36 months and below.

2. Definition of Jacket

Waterproof and breathable textile fabrics are used to make clothing for outdoor sports with waterproof and breathable functions.

3. Functions of Jackets

In order to ensure the overall waterproof and breathable performance standards of the jacket products, requirements are put forward for the structural design, production process and fabric functionality of the jacket products.

Structural design and production process
The placket and external pockets of the jacket should have a waterproof structure, and the waist circumference of the pants below 20cm should have a waterproof structure.
Placket
Bottom Lapel
Waterproof zipper
The seams of the jacket’s fabric need to be taped to prevent moisture from penetrating.
Functionality of fabrics
The jacket has excellent waterproof and breathable properties, moisture permeability, and windproof properties. It can effectively resist rain erosion, while allowing sweat to be easily discharged from the body, balancing the moisture and heat on the body surface, gathering warmth and preventing cold, thereby ensuring dry and comfortable exercise for long periods of time.
The so-called waterproof means that no matter you are sitting in a humid place or walking in a windy and rainy environment, it can effectively block the invasion of rain and frost and snow; the so-called breathable means that when you do high-intensity outdoor sports, your body naturally sweats and your skin exhales a lot of moisture. If it cannot be discharged from the body quickly, the sweat will be trapped between the body and clothes, especially in rainy weather, which will make people feel more damp and cold.

The so-called windproof means 100% protection against the wind chill effect. In a changing natural environment, when cold wind penetrates our clothes, it will blow away a layer of warm air near our skin. This layer of warm air is about one centimeter thick, with a temperature of 34℃~35℃ and a humidity of 40%~60%. Even a slight change in this layer of warm air can make us feel cold and uncomfortable. When cold wind blows into the clothes, it destroys this layer of warm air, causing heat to be lost rapidly, and the body temperature to drop. We will immediately feel a little chilly, which is the wind chill effect.
Main index requirements of the new standard
Hydrostatic pressure test
Water vapor transmission rate test
Air permeability test

Main content changes between the old and new standards
1. Product model

  • The sizes of adult jackets shall be selected in accordance with GB/T 1335.1 and GB/T 1335.2, and the sizes of children’s jackets shall be selected in accordance with GB/T 1335.3.
  • If the value exceeds the range, it can be increased or decreased successively according to the classification values ​​and principles specified in the above standards.

2. Perfluorinated compounds

In order to promote green and environmentally friendly products, the new standard adds products with nominal fluorine-free finishing, and the outer fabric needs to be tested for perfluorooctane sulfonyl compounds (PFOS) and perfluorooctanoic acid (PFOA).

  • The standard requires that both PFOS and PFOA be less than 1.0 μg/m 2 .
  • The test method shall be carried out in accordance with GB/T 311-26 .

PFOS and PFOA are both perfluoroalkyl and polyfluoroalkyl substances (PFAS). Relevant information shows that PFAS can cause potential harm to human health and may cause some human diseases such as cancer, liver damage, thyroid disease and developmental problems, and may cause cancer, weight gain or affect children’s development and immune system.

3. Pilling

The old standard (2016 edition) did not specify the test parameters; the new standard clearly adopts parameter D in GB/T 4802.1-2008 in the test method.

4. Wear resistance

Compared with the new and old standard requirements, the upper installation remains unchanged, while the lower installation is increased to ≥15,000 times.

5. Color fastness to light

In the new standard, the light fastness index of dark-colored products (qualified products) is raised to ≥ level 3-4.

6. Moisture permeability

The new standard indicators are raised to: the moisture permeability of Class I products (before and after washing) ≥ 6000g/(m 2 ·24h), and the moisture permeability of Class II products (before and after washing) ≥ 4000g/(m 2 ·24h).

7. Hydrostatic pressure

The new standard adds requirements for testing elastic fabrics and metal meshes in the hydrostatic pressure test method, specifically:

Fabrics with elastic elongation ≥10% in either warp (vertical) or weft (horizontal) direction shall be tested according to the method for determining the final hydrostatic pressure value in FZ/T 01004-2008, with a water pressure rise rate of (6.0±0.3) kPa/min, and the test endpoint shall be implemented in accordance with GB/T 4744; other fabrics shall be implemented in accordance with GB/T 4744. The hydrostatic pressure sampling location at the seam is the flat seam tape (except the cross section). The lowest hydrostatic pressure value of the fabric and the fabric seam is used as the hydrostatic pressure value of the sample for determination.

The washing method shall be in accordance with the washing method for surface moisture resistance in 6.1.18. The tensile elastic elongation shall be tested in accordance with FZ/T 01034, with a fixed force value of 25N.

8. Chromatic Aberration

The new standard adds relevant regulations and test methods for color difference

  • The color difference of sleeve seams, hem seams and crotch seams shall not be less than Grade 3-4, and the color difference of other surface parts shall not be less than Grade 4. The color difference caused by multiple layers of fabrics or interlining shall not be less than Grade 3-4.
  • The color difference between the top and bottom of the suit should not be less than 3-4 levels.
  • The color difference test method shall be carried out in accordance with GB/T 250.

Conclusion
The above is an introduction to several core index requirements in the new standard for assault jackets. If you want to read the full content, you can click “Read original text”  at the bottom of the article  to view the standard document.

Outdoor sports have become a choice for modern people to pursue a healthy lifestyle, and as an essential equipment for outdoor sports, jackets are not only windproof, waterproof, and breathable, but also provide protection for outdoor athletes at critical moments. The improvement of these indicators in the new standard is more in line with the actual use scenarios of jackets, meets the needs of consumers, and promotes the improvement of the quality of jackets in the industry.

Read the original article: What are the new changes in jacket testing? Interpretation of the latest GB/T 32614-2023 standard

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