What is the difference between polypropylene yarn and polypropylene filament?
What is the difference between polypropylene yarn and polypropylene filament?
Definition aspect
Polypropylene filament: Polypropylene filament refers to continuous long fibers made from polypropylene as raw material through spinning process. Its length is usually very long and has not been cut or processed. The fiber thickness and other specifications can be adjusted according to production needs. For example, in the production of polypropylene filament geotextile, the filament can reach lengths of hundreds or even thousands of meters to enhance the overall performance of the geotextile.
polypropylene yarn: polypropylene yarn is a colored polypropylene fiber. Its color is imparted through the addition of color masterbatch during the spinning process, emphasizing the color properties of the fibers. It can be in the form of long filaments or short filaments. For example, when making colored polypropylene carpets, the polypropylene colored filaments used are mostly short filaments, while when making colored polypropylene curtains, polypropylene colored long filaments may be used.
In terms of appearance
Polypropylene filament: generally white or semi transparent (if no pigment is added), with a relatively pure and simple appearance. The surface of the filament is smooth, glossy, and the fibers are relatively tight, and continuous filamentous structures can be seen under light.
polypropylene yarn: It has rich colors, which can be bright solid colors or a mixture of multiple colors. Due to the addition of color masterbatch, its appearance color is uniform and stable, and there are various color types according to different purposes and aesthetic requirements. For example, in the clothing industry, various fashionable colors of polypropylene yarn fabrics can be produced.
In terms of production technology
Similarities: The basic raw material for both is polypropylene, and there are similarities in the initial spinning steps, which require basic processes such as melting and extrusion.
difference:
Polypropylene filament: mainly focuses on optimizing the length and physical properties of the fiber. After spinning, the main operations are stretching and shaping to ensure that the physical indicators such as strength and toughness of the filament meet the requirements. For example, in order to improve the strength of polypropylene filament, a higher stretching ratio will be used for stretching treatment.
polypropylene yarn: The key step in the production process is to add color masterbatch. Accurate control of the amount and mixing degree of color masterbatch is required to ensure the accuracy and uniformity of the color. And in the subsequent processing, factors such as whether the color will change under different processing environments (such as high temperature setting) should also be considered.
Performance aspect
Physical performance:
Polypropylene filament: It has good strength and toughness, and due to its continuous long fiber structure, it can evenly disperse stress under stress. For example, when used in rope manufacturing, the continuity of the filament allows the rope to withstand significant tensile forces. Its length characteristics also make it advantageous in some materials that require long fiber reinforcement, such as geotextiles.
Polypropylene colored yarn: If it is a long filament form of polypropylene colored yarn, its physical properties are similar to those of polypropylene long filament, but if it is a short filament form of polypropylene colored yarn, its physical properties such as strength may be slightly weaker. However, the color of polypropylene yarn can provide visual benefits in certain application scenarios
Features such as visual identification, such as in industrial filtration, different colors of polypropylene yarn can represent different filtration accuracies.
Chemical properties:
Polypropylene filament and polypropylene colored filament: Their chemical properties are basically the same because their main component is polypropylene. All of them have good resistance to chemical corrosion and have a certain tolerance to general chemicals such as acids and alkalis. But under high temperature and the action of some strong oxidizing chemical reagents, both will be affected to a certain extent.
Application aspect
Polypropylene filament:
Widely used in the industrial field, such as in the manufacturing of geotextiles, building waterproofing membranes, etc., it enhances the overall performance of materials by utilizing their high strength and wear resistance characteristics. In the textile industry, filament can be used to manufacture high-end clothing fabrics, such as some lightweight sports windbreakers, which can provide good windproof and breathable performance.
Polypropylene colored yarn:
Mainly used in occasions where color is required. In the textile industry, it is used to produce various colored clothing and home textile products, such as colored sportswear, bedding, etc., to meet consumers' demand for color. In the production of handicrafts, the color characteristics of polypropylene yarn can be used to weave colorful handicrafts, such as tapestries, dolls, etc. At the same time, it has also been applied in some industrial filtering and other fields that require visual identification.
Ningbo Dazhong Chemical Fiber Industry Co., Ltd. long-term production and management: PP yarn, polypropylene filament, PP FDY yarn, polyester staple fiber, polypropylene full draft wire, polypropylene POY yarn, polyester POY yarn.