The test standards for embossing of clothing mainly include the following aspects:
Appearance quality:
Pattern integrity: The embossed pattern should be complete and clear, without defects such as missing corners, deformation, and blur. The lines of the pattern should be smooth, the edges should be neat, and consistent with the pattern of the design draft or sample.
Three-dimensional effect: The embossing effect is obvious and the three-dimensional effect is strong. The height and shape of the raised part should meet the design requirements and be able to present a good three-dimensional visual effect. For example, for some embossing with specific shape requirements, such as flowers, animals and other patterns, the shape should be realistic, and the convex part and the concave part should transition naturally.
Color accuracy: The color of the embossing should be consistent with the color required by the design or customer, without obvious color difference. If coloring or the use of colored materials is involved in the embossing process, the color saturation, brightness and other indicators should also meet the standards.
Surface flatness: The surface of the embossed clothing should be flat, without wrinkles, bubbles, degumming and other phenomena. Especially in the surrounding area of the embossed pattern, there should be no deformation or unevenness of the fabric caused by the embossing process.
Fastness test:
Friction fastness: Use a friction tester or manual friction method to perform a friction test on the embossed part. After a certain number of frictions, the embossed pattern should not fade, fall off, blur, etc. For example, according to the standard test method, use a white friction cloth to rub back and forth on the embossed part to observe whether there is color transfer on the friction cloth and the changes in the embossed pattern.
Washing fastness: The embossed garment is subjected to a washing test to simulate daily wear and washing. The embossed pattern after washing should remain intact, the color should not fade, and the three-dimensional sense should not change. Specific washing test conditions, such as water temperature, detergent, washing time, etc., can be set according to different clothing materials and usage requirements.
Stretching fastness: Perform a tensile test on the embossed part to check whether the embossed pattern will break, deform or fall off under a certain tensile force. This is mainly to take into account the situation that the garment may be stretched during wearing, such as human body movement, limb extension, etc.
Dimensional stability:
Thermal stability: The embossed garment is heated under certain temperature conditions, and then the dimensional changes of the embossed pattern are measured. The thermal stability test is mainly to test the dimensional stability of the embossed material under high temperature environment, ensuring that the embossed pattern will not be deformed due to temperature changes during the daily use and maintenance of the clothing.
Wet stability: Similar to thermal stability, the wet stability test is to soak the clothing in water or in a humid environment to observe the dimensional changes of the embossed pattern. This is especially important for some clothing that may come into contact with water, such as swimsuits, sportswear, etc.
Safety:
Material safety: The materials used for embossing, such as glue, ink, silicone, etc., should comply with relevant safety standards and environmental protection requirements. For example, the material should not contain harmful substances such as formaldehyde, heavy metals, etc., so as not to cause harm to human health.
Process safety: The overall structure and performance of the clothing should not be damaged during the embossing process, such as destroying the fiber structure of the clothing and reducing the breathability of the clothing. At the same time, the operation of the embossing equipment should be safe and reliable to avoid safety accidents.
Weather resistance: For some outdoor clothing or clothing that is often exposed to the sun, weather resistance testing is required. Place the embossed garments in a simulated natural environment, such as sunlight, rain, wind, etc. After a certain period of testing, check the changes in the embossed pattern, including color fading, weakened three-dimensional effect, material aging, etc.