Manufacturer of active color fixing agent: Fabric dyeing fastness (referred to as dyeing fastness) refers to the degree to which dyed or printed fabrics fade under external factors such as compression, friction, washing, rain, sun exposure, finishing, seawater immersion, saliva immersion, water stains, sweat stains, etc This is an important indicator of the fabric during use or finishing. Good dyeing fastness, fabric products are not easily faded during finishing or use; If the dyeing fastness is poor, there may be fading, slight fading or staining, which can cause a lot of trouble.
Active color fixing agent manufacturer: The dyeing fastness of fabrics usually includes:
Soap resistance, friction resistance, residual light resistance, bleaching or oxidizing agent resistance, reducing agent resistance, ironing resistance, sweat collapse resistance, and sweat stain fastness. Among them, soap washing resistance, friction resistance, residual light resistance, water resistance, and sweat resistance are several dyeing fastness indicators that most purchasers are concerned about in actual production and trade.
1. Common issues with fabric dyeing fastness
Active color fixing agent manufacturer: Common issues with fabric dyeing fastness are as follows:
1) Poor light fastness. During the process of wearing work clothes, after a day, the areas that emit more light become lighter or discolored (usually the back and shoulders), while the areas that do not emit light or emit less light remain unchanged or slightly change in color, resulting in products of the same color having varying shades and cannot be reused.
2) The water washing fastness, soap washing fastness, and dry cleaning fastness are unqualified. High end silk work clothes, wool work clothes, pure cotton work clothes, and simple ones all have this problem.
3) The color fastness to friction is not qualified. During the use of the fabric, the degree of fading varies due to the varying degrees of friction experienced by different parts of the product. For example, the elbows, collar, and armpits of jackets and sleeves are prone to fading. In addition, the buttocks and knees of the pants are also prone to fading.
4) Poor color fastness to sweat stains. Summer clothing or underwear are the main ones that fade when worn on the body and soaked with sweat.
2. Factors affecting dyeing fastness and improvement methods
Products with poor color fastness will fade during wearing, which can affect other work clothes worn on the body or contaminate other clothes when washed together, affecting their appearance and wearing performance; On the other hand, the quality of dyeing fastness is directly related to human health and safety. Dye molecules and heavy metal ions on products with poor color fastness may be absorbed by the human body through the skin, causing harm to the skin and even endangering physical health.