Polypropylene yarn: properties and basic characteristics

The development of modern technologies has led to the creation of such progressive materials, without which it is already difficult to imagine our life. These include polypropylene yarns, which are especially widely used in the fishing and textile industries.

Description

Such yarns are twisted polymer fibers having high strength and durability. The production process is quite complex. Polypropylene is melted, adding the necessary components improving the properties of the finished product, and forming a film from it, which is cut into strips. The obtained material is wound on special bobbins or spools by the cross method, due to which the thread is much easier to slice, without tangling or clinging.

Properties of polypropylene yarns

The high demand for this material is due to the large number of its advantages, compared to similar ones in conventional threads. Polypropylene yarns are characterized by increased strength, elasticity and minimum bulk density. They are resistant to abrasion, repeated bending, do not undergo rotting processes, have high resistance to detergents, hot water, and also have antistatic properties. An important fact is that the threads of the polymer are environmentally friendly material, so they do not require any special precautions when working with them. And products from them can safely contact with food products.

Due to chemical inertia, these threads are not able to break down with time. They do not fade, but after manufacturing they can not be painted. The pigment is added to the polypropylene even before the film is made.

Polypropylene yarns must necessarily comply with GOST. The mass of produced bobbins averages 5 kilograms, and the density of winding in them varies from 550 to 3500 tex. The strength of the yarns (the ability to resist fracture under load) is measured in kg (force) and is 1.4-21 KGS.

Fibered thread

This thread, which is made by the method of longitudinal splitting (fibrirization). After the formed polymer films are cut into strips (their width is not more than 100 mm), a special adaptation in the form of a needle roller carries out their splitting. For this, longitudinal scratches on the surface of the film are made with it.

After this, the strips are stretched in such a way that their length becomes 4-10 times larger, and heat treatment is carried out on the pulling rollers in a special chamber, where the film melts from the high temperature and, as a result, is stretched. This forms the polypropylene flat (or fillet) yarn.

Multi-filament yarn

A feature of the production of these yarns is the use of special additives, resulting in the resulting material is very resistant to UV rays. Multifilament yarns are used for the manufacture of such products, which must be particularly resistant to any weather conditions, chemicals, etc.

Application

The range of use of this material is extremely wide. Polypropylene yarns, because of their versatility, have found application in a wide variety of industries. In agriculture, they serve for tying the sheaves and tying up plants. In fishing they are used for the manufacture of networks, in the light industry, without this material, the manufacture of carpets and many household things can not do. The threads in the medical industry and in cosmetology are in great demand. Resistant to fading and the effects of detergents, a polypropylene thread is used for loofers, rugs and bright handbags that are knitted by the skillful hands of modern craftsmen.