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Common Problems Of Felt In Production

Jan. 13, 2020

Even the felt of the same type may be different in appearance, and some problems may occur during the production of the felt.

For example, the problem of creases is because the weight per unit volume is small and the internal structure is relatively loose. In the production process of wool felt, thin creases caused by folding are often required. And then there's the fracture, the grooves, the signs of fracture. Then there are holes, which are all kinds of mechanical and other damage. The other is layering, because the felting is not tight enough during compression, and the fibers are not felted in one layer and divided into two layers after shrinking. Finally, the edge strip. When compressed, the pressure is too small, or the pressure plate swings too much, or the compression time is too long, resulting in strips or hairs on the surface of the felt.

Wool Felts Rolls

The quality of Wool Felt manufacturer for the production of needled felts will also be affected by many factors. Let’s take a look at the influencing factors:

First of all, the quality of needle punched felt will be affected by the quality of needle punching, including disposable fibers, that is, the type of fiber, fineness, and fiber length that are suitable for the required performance. The uniformity and weight of the Wool Felts Rolls; the type of needle and the needling method, including the thickness of the needle, the arrangement of the needle, the density of the needle, the feeding distance, the penetration depth, and the choice of the base cloth. Then speaking, it is the resin coating, using a spray or roller to apply a layer on one side, or using a hot-melt resin to perform a layer.

Among them, resin processing is immersed in various resin solutions, and heat setting is to increase the temperature, which can make the size of felt products stable.