Polypropylene twine is in special demand in the packaging materials market. What is this product and what is it used for? Let's try to figure this out.
Polypropylene twine - what is it?
This product is a
polypropylene, technical, film
thread . It is made by torsion. Polypropylene twine is wound on a special reel without a sleeve.
Polypropylene material belongs to the class of polyolefins. It is an environmentally friendly product, completely safe for human health and the environment. Therefore, polypropylene twine also does not bring harm. How is it made?
Polypropylene twine production
This process takes place in several stages:
- Raw material - polypropylene is fed into the storage hopper.
- From this department, the finished granulate enters the drying compartment. The temperature here is adjustable from 60 to 110 degrees Celsius.
- Then the raw material goes back to the storage hopper, then to the extruder.
- Here, the polymer is melted, filtered, and then fed to the molding head of the extruder.
- In the form of a film web, material enters the cooling drum. Here it hardens.
- Then the film is cut into ribbons.
- Next, the process of pulling the tapes in the orientation chamber. This is due to the difference in velocities of the second and first Semivalians in the environment of sufficiently hot air (the temperature in the orientation chamber is at least 150 and at most 210 degrees Celsius).
- The film tape on the fibrillator forms filaments of a mesh structure. Then it is wound on bobbins.
Product application
Polypropylene twine is actively used in the following industries:
- Agriculture;
- meat processing industry;
- for the production of ropes with different diameters;
- for packaging for household purposes.
In certain applications, the above products have technical advantages. Farmers prefer to bale straw bales with this packing thread. Experts note that the person who began to use polypropylene twine is unlikely to ever return to sisal.
Product advantages
Polypropylene twine has the following features:
- high resistance to alkalis and acids;
- has excellent thermal insulation properties;
- not influenced by organic fertilizers;
- quite economical material;
- completely safe and environmentally friendly;
- increases productivity;
- safe to use (for example, steel or galvanized wire can damage human hands);
- significantly reduces the price of packaging.
In addition, this packaging material does not rot and has high fibrillation. It is very handy. Although, as experts say, this polypropylene thread has one drawback. It is destroyed by exposure to sunlight. But such an impact should be lasting. However, if during the production of the above packaging material special components were added to its composition that increase durability and light fastness, this problem is eliminated.
Another advantage of polypropylene yarn is its high buoyancy. It is also resistant to bending and abrasion. It is an excellent dielectric, very convenient for lacing and strapping.
Polypropylene twine, the price of which is 60% less than the cost of a metal thread, depending on the type, can be bought for 105-300 rubles. per kilogram.
This product is an excellent packaging material. The excellent technical characteristics of polypropylene yarn contribute to its high demand.