What Are The Properties Of Glass Fiber Chopped Wire Specifications?

  Glass Fiber Staple is the most basic raw material for the production of Glass Fiber Needled Felt, and its specification performance will decide whether it can pass the process of carding and needling, and directly affect the quality of the product. The main specification properties of glass fiber staple yarn are fiber length, fiber flexibility, fiber folding and abrasion resistance, fiber antistatic.
1. Fiber length
  Fiber length should be adapted to both carding process and product quality. The length of glass fiber chopped wire is long, it is easy to entangle between the fibers, and there are many joints, so the strength of the product is big and the quality is good. But whether it is a combing machine or carding machine, carding machine have combing length range, more than this range of fibers is not easy to comb open, and even winding in the forest, and can not be produced. Therefore, generally take the upper limit of carding range, fiber length of about 40~80mm.
2.Fiber fineness
  Generally speaking, the finer the fiber, the greater the strength of the product, the better the feel of the product. Glass is a brittle material, very poor flexibility, only when it is pulled into a very fine fiber, can become combing, needling textile materials, but even so, its flexibility and other organic fibers are still greatly inferior. Flexibility to a certain extent can be used to indicate the critical bending radius and bending stiffness of the fiber. Critical bending radius is the fiber around - a mandrel, the fiber will break and has not yet broken when the minimum radius of the mandrel, the bending stiffness of the fiber and its modulus of elasticity and the fiber diameter of the fourth power is proportional. The greater the bending stiffness of the fiber, the greater the ability to resist bending deformation, that is, the less flexible. From a theoretical point of view, the finer the glass fiber, the less brittle it is, the more flexible it is, so it is necessary to choose the finest fiber as the material for Hanging and needling.
3. Folding and abrasion resistance of the fiber
  Glass fiber in the carding, needling textile processing and use process, often have to withstand repeated tensile deformation and bending deformation, the bending strength of the fiber will be reduced as a result, which is the bending fatigue of the fiber. Fiber in repeated bending, its outer layer will produce so that the micro-cracks increase the tension, will make the fiber in a smaller load can also break. The smaller the fiber diameter is, the better the product's resistance to bending, and for glass fiber needle felt, the longer its service life can be improved. Glass fibers are also subject to wear and tear during carding, needling and use, and wear and tear is one of the main causes of damage to glass fibers. Compared with organic fibers, glass fiber has poor abrasion resistance, which is one of its main weaknesses.
4. Antistatic of fiber
  Glass fiber in carding, needling to friction with the constant movement of machinery, it is very easy to accumulate charge on the surface of the fiber, so that the fiber and fiber exclusion, fiber and machine parts are attracted to each other, so that the normal production can not be carried out. For example, short cutting fiber due to electrostatic adsorption in the knife roller and short cutting machine wall. Again, such as, carding fiber adsorption in the tin, into the mesh box ... so that the fiber combing bad, into the felt uniformity is poor. In order to overcome this technical key, some foreign in the relevant equipment installed on the static elimination device, some in the carding of short fibers before the spraying of anti-static agent. There are also in the drawing of the infiltration agent is added directly to the anti-static agent to prevent the fiber from generating static electricity, and achieved better results. At the same time to avoid static electricity, it is also necessary to make the glass fiber staple fiber to maintain a certain degree of wetness.