UV-cut Treatment
UV-cut treatment is a general term for processing and functionality that enhances ultraviolet-blocking performance by using fiber selection, a dense weave or knit structure, dyeing, and post-processing to make the textile less permeable to ultraviolet rays.
Contents6 sections
Definition and Overview
UV-cut treatment is a function for reducing the amount of ultraviolet rays in sunlight that pass through textile. In some cases, it refers only to post-processing, but in practice it may refer to the entire specification, combining incorporation into the raw thread, structure and density, color, dyeing, coating, and other elements.
The degree to which ultraviolet rays are blocked depends on the material, thickness, density, color, knitting or weaving structure, and stretched state. For this reason, it is important not to judge performance uniformly based only on the label “UV cut,” but to check performance indications, including test conditions, and textile specifications.
Features and Appearance
The texture and appearance vary depending on the method used to improve UV-cut performance. High-density textile tends to have more firmness and body, while dark colors tend to reduce sheerness; however, light colors and thin fabrics may make it difficult to achieve the desired shielding performance.
With specifications that use resin or coating, a dry touch, firmness, and slight sheen may occur. On the other hand, methods that give functionality to the fiber itself may allow the design to achieve an appearance and texture close to that of ordinary textile.
- Ultraviolet shielding performance is related to low sheerness, but they do not mean the same thing.
- Dark colors tend to block ultraviolet rays more easily, but they may also absorb heat more readily.
- Stretchable textile may change performance when worn and stretched, as the gaps in the structure widen.
Main Applications
It is used for spring and summer shirts, blouses, dresses, pants, and outer layers that are exposed to strong sunlight. It may be considered for long-sleeve items that reduce skin exposure, and for planning that seeks functionality even in thin fabrics.
It is also used for sportswear, outdoor wear, swimwear, uniforms, and kids' wear. Depending on the application, it is necessary to confirm compatibility not only with UV-cut performance but also with water absorption and quick drying, breathability, stretch, and durability.
Selection and Handling Notes
When selecting, check the necessary ultraviolet shielding performance as well as the thickness, sheerness, breathability, stretchability, and washing durability that suit the application. For apparel, it is reassuring to conduct prototypes and evaluations using a representative color and lot, while also considering the product's worn state and layering.
Washing, friction, and long-term exposure to sunlight may change the state of the post-processing and the color tone. Follow the washing instructions and avoid strong bleaching or excessive heat treatment. Before sewing, check the shrinkage rate, and for coated materials and high-density textile, also check needle holes, seam fading, and seam slippage.
Differences from Similar Terms
Heat shielding is a function mainly intended to suppress heat absorption and temperature rise from solar radiation, and the evaluation target differs from UV cut, which blocks ultraviolet rays. Some textile have both functions, but one indication alone cannot be used to judge the other performance.
Lightfastness is a quality item that shows resistance to color change when exposed to light. UV-cut treatment is a function that suppresses ultraviolet rays reaching the wearer, and it does not directly guarantee that the textile itself will not fade.
Frequently Asked Questions
Can UV-cut treated textile block ultraviolet rays even if it is thin?
Even in thin materials, shielding performance can be provided depending on the fiber type, knitting or weaving density, and the use of pigments or ultraviolet absorbers. However, performance changes depending on thinness, sheerness, and stretched state, so it is necessary to check test values and actual samples according to the application.
Does UV-cut treatment come off with washing?
The washing durability differs between materials with functionality built into the fiber itself and those with functionality added by post-processing. Because performance and texture may change with repeated washing, check the test conditions for washing durability, the washing instructions, and the required number of uses in the planning stage.
Are UV cut and heat shielding the same?
No, they are not the same. UV cut is a function that suppresses the transmission of ultraviolet rays, while heat shielding is a function that suppresses temperature rise caused by solar heat. For summer apparel, both may be required, but confirm the performance indications and evaluation methods for each separately.
