Polypropylene color filament procurement: The accuracy of color and the adequacy of functionality are the two major trends that deserve attention. 

Polypropylene color filament (dyed polypropylene filament in the original liquid) has the advantage of its color being directly integrated into the fiber, featuring high color fastness, resistance to water washing, and environmental friendliness. It is widely used in luggage straps, outdoor products, and clothing fabrics. As the downstream industry's requirements for product color consistency and functionality continue to increase, the purchasing logic for polypropylene colored filament is also changing. Below, from the perspective of industry trends, we provide you with reference. 

1. Color Consistency: From "View Color Chart" to "Track Batch" 

In the past, purchasing colored threads might mainly rely on comparing color charts. Now, more and more purchasers are beginning to pay attention to the color difference control system among different batches of colored threads, as well as the ability of the colors to remain stable during long-term use. 

Batch-to-batch color difference control: The color stability of the color yarn depends on the dual control of the color masterbatch batch and the spinning process. When purchasing, in addition to checking the color chart, it is recommended to pay attention to whether the supplier has a retention sample comparison system for each batch and whether there are color difference internal control standards. Light color series (such as beige, light gray) have higher requirements for batch consistency, and during acceptance, stricter standards can be applied appropriately. 

Lightfastness to sunlight: For color threads used in outdoor products, it is important to pay attention to their ability to maintain color under long-term exposure to sunlight. When purchasing, you can ask the supplier if they have conducted lightfastness to sunlight tests (such as xenon lamp aging tests), and request the test results. Dark colors usually have better resistance to sunlight than light colors. If light colors must be used, it is necessary to confirm whether the pigment system is suitable for long-term outdoor use. 

Fiber resistance to abrasion and water washing color fastness: For products such as luggage and clothing that require repeated friction and water washing, the color fastness of the fiber after abrasion and water washing directly affects the appearance and lifespan of the finished product. 

II. Functional Combinatorialization: A single color is no longer sufficient. 

Apart from the color itself, the functionality of the color yarn is becoming an increasingly important consideration for many purchasers. 

Anti-aging color yarn: When used in outdoor products, sun protection functions are shifting from "optional" to "standard". The function achieved by adding anti-aging masterbatch is more durable than the post-treatment coating. When purchasing, it is necessary to clarify the usage environment and expected lifespan. Ningbo Dazhong Industrial Products cover polypropylene strong yarn, polypropylene FDY yarn, and polypropylene color yarn, and can be customized with specific functions according to requirements. 

Flame retardancy and anti-static properties: In certain industrial or public settings (such as automotive interiors, public transportation vehicles), flame retardancy and anti-static capabilities may become mandatory requirements. Before purchasing, confirm the standards you need to meet and inquire whether the supplier has the ability to achieve these functions through the addition of masterbatches. 

Customized color matching capability: As the design of terminal products becomes more personalized, the demand for customized color matching of color threads is also increasing. Whether the supplier has the ability to quickly produce samples and develop according to the samples, as well as the accuracy of the returned color, are the references for evaluating its service capability. 

Summary and Selection Suggestions 

When purchasing polypropylene colored yarn, the following points are recommended to be paid attention to: 

Specify the purpose and environment: Is it for indoor or outdoor use? Does it need to be resistant to light, friction, flame retardancy or anti-static properties? Inform the supplier of the usage scenario so that they can match the appropriate color system and functional solution. 

Evaluate the stability of color batches: The supplier is required to provide multiple samples of the coil plates from recent production runs for comparison, to assess the level of color difference control between batches. 

Sample machine verification: Conduct a small-scale trial on your weaving equipment to observe the breakage rate and the uniformity of the finished product color. 

Ningbo Dazhong Industrial Fibre Co., Ltd. was founded in 1984. It produces 15,000 tons of products annually, including polypropylene FDY yarn, polypropylene POY yarn, polypropylene stretching yarn, and polypropylene coloured yarn. The fineness of the products ranges from 68D to 1800D. The color can be customized. Please feel free to send samples for testing. 

Official website: http://www.dzfibre.cn