Polypropylene light body filament definition and structural characteristics!

Polypropylene light body filament is also called polypropylene hollow yarn, this product made of polypropylene fiber fabric characteristics: polypropylene is one of the lightweight fabrics, the following is about the introduction and characteristics of polypropylene light body silk:

Definition: Polypropylene light body filament is a fiber filament with polypropylene as the main raw material. Its name highlights its "light body" characteristics, this is because the density of polypropylene itself is relatively small, about 0.91g/cm3, polypropylene light body silk is to ensure a certain performance at the same time, as far as possible to reduce the weight of the fiber, so that it can play a light advantage in the application.

Structural characteristics: Polypropylene light body filament is generally composed of continuous polypropylene filament, the molecular chain structure inside the fiber is more regular. At the microscopic level, the molecular chains interact with each other through certain chemical bonds and van der Waals forces, and this structure makes the light body filament of polypropylene fiber have good stability. From a macro point of view, the surface of polypropylene light body silk is relatively smooth, and the fiber thickness is uniform, which helps it to better play its performance in subsequent processing and applications, such as not easy to appear in the knitting process.

Performance advantage

Light weight: As mentioned earlier, the most significant feature of polypropylene light body silk is light weight. This makes it extremely advantageous in weight-sensitive applications, such as in the aerospace sector, where every gram of weight reduction can bring significant benefits. In the production of some aviation interior materials or small aviation accessories, polypropylene light body silk can greatly reduce the weight of parts without affecting the strength.

Good strength: Although it is called light body silk, polypropylene light body silk still has good strength. Its breaking strength can meet the needs of many common application scenarios, such as when making lightweight sports backpacks or outdoor tents, polypropylene light body silk can withstand a certain tension and pressure to ensure the normal use of the product.

Chemical resistance: polypropylene light body silk has good tolerance to general chemical substances. It can resist the erosion of acids, alkalis and other chemicals, and can maintain stable performance in a wide pH range. For example, in the production of filter bags or protective clothing in some chemical companies, polypropylene light body silk can effectively resist the infringement of chemical substances.

Insulation and heat preservation: Polypropylene light body filament is a good electrical insulator, which makes it in the packaging of electronic equipment or some need insulation environment has a good application prospect. At the same time, it also has a certain warmth, and the air between the fibers can play a good heat insulation role, so it can also play a role in some winter sports clothing or warm home textile products.

Production technology

Raw material selection and pretreatment: The selection of high quality polypropylene raw material is the key to the production of Polypropylene light body filament. The molecular weight and molecular weight distribution of the raw material will affect the performance of the silk, and polypropylene with moderate molecular weight and narrow distribution is usually selected. In the pre-treatment stage, the raw material needs to be dried to remove the water in it to avoid problems such as hydrolysis in the subsequent melt spinning process.

Melt spinning: This is the core process of the production of Polypropylene light body filament. The pre-treated polypropylene raw material is melted at high temperature, the general temperature is between 200-260 ℃, and the wire strip is formed by extrusion through the spinneret. In this process, parameters such as temperature, pressure and extrusion speed are precisely controlled to ensure the quality of the strips. For example, too fast an extrusion speed may result in uneven rod thickness, while too high a temperature may cause the polypropylene to decompose.

Drawing and shaping: The newly extruded silk strip needs to be stretched, and the molecular chain of the fiber can be aligned by stretching, thereby improving the strength and modulus of the fiber. The drawing multiple is generally determined according to the specific requirements of the product, usually between 3-6 times. After stretching, the strips also need to be shaped to eliminate internal stress, fix the size and shape of the fibers, and ensure the stability of the strips.

Application field

In the field of textile and clothing: In the production of clothing, Polypropylene light body filament can be used to manufacture sportswear, casual clothing and functional clothing. Because of its light weight and good strength, it will not add too much burden to athletes when used in sports clothing, but also ensure the durability of the clothing. In terms of functional clothing, such as some waterproof and breathable outdoor clothing, polypropylene light body silk can be used with other functional fabrics to strengthen and support.

Home textile field: In home textile products, Polypropylene light body filament can be used to make curtains, bedding and so on. In curtain production, its light body characteristics make the curtain easier to pull, and has a good sense of drape. When used in bedding, its warmth and light performance can provide users with a comfortable sleep experience.

Packaging field: Polypropylene light body filament is also used in the packaging industry. For example, when making lightweight packaging belts or buffer materials, its light weight and certain strength can effectively fix and protect the product. In the packaging of some electronic products, polypropylene light body silk can be used as a filling material, using its insulation to protect electronic components.

Industrial field: In industry, Polypropylene light body filament can be used to make filter screens, filter bags and other filtration equipment. Its chemical resistance and certain strength make it able to play a role in the filtration process of chemical, food and other industries. At the same time, in the production of some industrial ropes or conveyor belts, Polypropylene light body filament can also provide suitable solutions according to specific strength requirements.

Shanghai Jinci Industrial Co., Ltd, founded in March 2006, is a large entity company specializing in the production and sales of polypropylene fiber (PP yarn). The company's products include polypropylene general filament, PP high-strength yarn, polypropylene light body filament, polypropylene twist filament, polypropylene hollow filament, polypropylene fluorescent filament, polypropylene luminous filament, polypropylene flame retardant filament, polypropylene air variable filament, etc.