Sheet felt is a material that has low thermal conductivity, excellent air permeability and low weight. The use of this material is carried out in the field of instrumentation, in the manufacture of machines as gaskets, seals and filters, which are located between metal surfaces. If we are talking about the latter case, then the sheets are protected from pollution and abrasion, they are not exposed to shock and shock. If we are talking about environmental cleanliness, it should be noted that sheet felt is harmless, therefore, it can be used in the field of private construction when warming residential and industrial premises. This material is made from natural washed sheep wool.
Varieties of material and their purpose
Coarse felt technical is used for stuffing boxes, filters and gaskets, as well as soundproofing material. If we consider the types of felt, then we can distinguish the sole and shoe, which are used for the manufacture of platforms, insoles, shoes and soles. Podhomutovy and potnikovy felt is used in saddlery products. For the manufacture of yurts, the felt of the same name is used, but builders use it as a sound and heat-insulating material. Sheet felt can also be needle-punched, in which case it is actively used in furniture production. But if the material has the form of a substrate, then it is laid under linoleum. Another variety is felt. It is a felt made from the fluff of rabbits and goats, it uses material for the production of hats, outerwear, decor items and bags.
Main characteristics
Sheet felt, as mentioned above, has found its wide distribution today, this is due to the many positive characteristics that are inherent in this material. Among them are:
- environmental friendliness;
- thermal conductivity;
- antibacteriality;
- ease;
- wear resistance.
Environmental friendliness lies in the fact that among the constituent elements of the material does not contain toxic substances. Among other things, the material during operation absorbs and then neutralizes formaldehyde vapors, which makes it simply indispensable in the role of insulating material in private construction. Coarse felt is an excellent heat insulator. Sheep wool does not conduct heat well, and with an impressive amount of woolen fibers firmly adhered to each other, the material turns into a unique thermal insulation. It absorbs moisture, taking it outside the house, which is why buildings that use this material will never be wet indoors.
Felt boots are the warmest winter shoes for a reason. Their legs will never freeze, they will not get wet from the snow. Natural felt also has antibacterial properties. Fungi and microorganisms do not start in the material, mold does not appear on the surface and inside. It should also be noted the ease that complements the rest of the technical specifications. The material is characterized by high wear resistance, it is not afraid of abrasion, therefore, for a long time, the felt does not lose its characteristics.
Polishing wheels
Felt circle is the most popular polishing material. It is made from high-quality wool, which is pressed during production. Circles can be semi-coarse, fine-haired and coarse-haired. Quite often, dense grades of raw materials are used in the manufacture of felt circles, as others quickly wear out. But thin-haired circles are used to process critical parts of devices and machines. Semi-coarse felt circle is used for polishing medical instruments, parts of precision measuring instruments and others. In other cases, coarse-haired products are used. Polishing of non-ferrous metals is preferably carried out using soft felt circles. Such materials work most efficiently at low speeds. Recommended parameters vary from 5 to 10 m per second. If the speed turns out to be excessively high, then the surface will be harder, and the felt circle will simply fall off it and will be wasted.
Additional information about felt circles
It is worth remembering that all varieties of felt are contaminated quite quickly, so safety precautions should be observed. Circles should be kept away from dust and dirt. The idle circle must be closed if it is removed from the drive. It is usually wrapped in blank paper. On a felt wheel, mixing powders or pastes should be excluded, but if you want to work with dioxide series, then do not use another polishing powder on the felt wheel.
Specialist recommendations
A felt wheel for polishing can be made of thin plates that are cut from the shafts of old felt boots. The diameter of such a circle can vary from 5 to 25 cm, everything will depend on the drive used and the purpose of the circle.
Door insulation with felt
Technical felt is used today for door insulation. The material breathes, so it can be used even in bathhouses with high humidity and exposure to temperatures. The material should be rolled up, and on the side where the edge is visible, the roll is laid around the perimeter of the box. Fixation is carried out with a stapler or nails. Additional protection is not required. Technical felt can be used to insulate the entire door leaf; for this, sheets are used that should be fixed on the outside. Furniture nails with beautiful hats should fix the insulation, covering it with a leather substitute or any other material. The latter must be weather resistant.
Alternative uses for felt insulation
With the help of felt, not only the insulation of the doors is carried out, but also the walls, floor, and also the ceiling floor. However, for wall insulation, using this material is quite problematic, and the cost can be high. The price is indicated per kilogram, in this case you will have to pay 200 rubles., The final cost will depend on the density.
Conclusion
Door insulation, as well as any other structures in the house, can be carried out using technical sheet felt. This material has many advantages, you can use them in everyday life when warming the floor and ceiling. However, sometimes the material requires protection.