Современное сельское хозяйство трудно представить without a huge number of various machines and units. They greatly facilitate the work and many times increase productivity. Whole industries are engaged in the production of additional consumables for technology, such as hay string twine. Without it, harvesting roughage (hay, straw, haylage) is simply impossible.
Twine
The word spaghetto is translated from Italian as "thin rope". The abbreviated spago is twine or twine.
It is a thin thread.It can be multi-threaded or single-threaded. Multiple thread - a thread spun or twisted from several fibers. Moreover, the twisting occurs in the opposite direction with respect to the twisting of the original fiber. This helps to achieve the greatest strength of the final product. The twine polypropylene senovyazalny can be made of not twisted fibers.
Kinds
In various spheres of human activity in any waycan not do without a rope. Somewhere there is an artificial thread, somewhere you only need a natural one. Depending on the material used to make the rope, it is divided into several types. Before the advent of synthetic materials (polypropylene) twine, the rope was made exclusively from natural materials. They can be:
• cotton;
• linen;
• jute;
• hempen;
• flaxenaceae;
• sisal;
• paper;
• polypropylene;
• polyamide.
Artificial fibers are preferable for the price,and in its durability. But there are some areas where it is impossible to do without the twine made from natural material - the food industry. All smoked meats are fixed only with natural jute twine. This concerns not only meat, but also fish products.
physical characteristics
Binding twine must be strong enough to withstand the load placed on it. There are several indicators that determine the physical properties of the material:
• Linear density ("tex" in translation fromLatin "weave"). This indicator is used to measure weight. If the string is 2200 TEKS, it means that 1 kilometer of thread weighs 2200 grams (2.2 kg). The unit of measurement is g / km.
• Breaking strength.It is measured in kilograms and determines the ability of a material to withstand tensile stress. It inevitably occurs when tying a bale. For example, if TEKS is 2500g / km, then the strength of the gap is almost 100 kg.
• The strength of the gap in the node. The thread itself is much stronger than a knot. Its ability to withstand the load drops more than twice. Twine TEX 2500 g / km: the strength in the gap is in the knot - about 50 kg.
• Устойчивость к ультрафиолетовому излучению (УФ).External natural factors can affect the material. The senovyazalny twine enters chemical and physical reactions at interaction with oxygen and an ultraviolet. This happens during the long storage of bales.
The main factors affecting the safety of the thread:
• heat resistance;
• density;
• resistance to cracking (drying out);
• the presence of stabilizers (from exposure to UV);
• type of fiber (source).
Modern chemical industry allows you to choose the optimal formulas of the appropriate additives to protect the fiber from destruction.
Application area
There are enough areas in our daily lifewhere it is impossible to do without such a simple thing as twine (rope). All haymaking equipment in agriculture needs reels with high-quality thread. Without it, modern cattle breeding is impossible. A huge amount of roughage is harvested and compactly stored for the winter period thanks to the bale rope.
In agriculture, it is used forvineyards and greenhouses. Twine has been used as a packing material for twine. Modern designers will easily find its use in the interior. Even our smaller brothers use hemp rope claws. Modern huge ships can not do without hemp ropes. Polypropylene twine is indispensable in the manufacture of fishing nets.
Polypropylene product
The most popularpolypropylene twine senovyazalny. The price for a bobbin can vary between 10-50 US dollars. It depends on the brand, weight and quality of the products offered. Its main advantages:
• does not swell with moisture;
• does not rot;
• resistant to temperature changes;
• withstands repeated bending;
• does not conduct electricity;
• cheaper than its counterparts from natural materials;
• softness of the material allows the use of mechanisms with a high level of automation;
• durable, you can very tightly bind the bales.
Manufacturing
Artificial threads are cheaper than natural ones. They can be subjected to various treatments, add the necessary ingredients to the composition, seeking changes in certain properties.
Twine polypropylene senovyazalnyIt is made of special polypropylene granules. The process itself can be described as follows: the granules fall into a special softening bin. From it under pressure pushed through the molding head. The resulting film is cooled, stretched and cut into thin strips. In a special longitudinal orientation chamber, they acquire their chemical and physical properties and are ready for twisting. Then they are wound on reels.
Product quality depends on several factors:
• composition of raw materials;
• temperature conditions; at non-observance of technology macromolecules are destroyed and melt uneven in consistency is obtained;
• constancy of optimal pressure, instability leads to poor material extensibility.
Manufacturers are seeking to reduce lineardensity along with increased fiber strength. Recent developments are of high strength and softness. This is of great importance when tying knots, they are reliable and durable.
The most famous manufacturers to dateday are China, USA, Turkey. From the countries of Western Europe - Finland (Piippo), Austria (TEWE), Portugal (Cordex), Hungary (Tama Twine), Czech Republic (JUTA). In the post-Soviet space, the hay knitting twine is produced by Ukrainian companies Polimerspagat, in Belarus by Khimvolokno-BelarusVolokno, in Russia by Kamenskvolokno.
