Solutions To The Quality Problems Of Heat Thermal Bonded Non Woven Fabric For Sanitation

The development of heat thermal bonded non woven fabric for sanitation largely depends on the development of fiber technology, and the quality of heat thermal bonded non woven fabric for sanitation is also closely related to fiber performance and processing technology. Improving the quality of heat thermal bonded non woven fabric for sanitation should start from improving the quality of the fiber and optimizing the process parameters.

1. Quality uniformity

The quality uniformity of heat thermal bonded non woven fabric for sanitation is mainly determined by the equipment. Whether the degree of opening is sufficient, whether the distance between each work roll and the main cylinder is adjusted properly, will have an impact on the weight and uniformity of the product , so we should start from this aspect to strengthen the inspection and maintenance of the equipment, so that the parameters of the equipment meet the process requirements. Of course, this problem also has a lot to do with the uniformity of cotton feeding before the carding process.

2. Powerful

The strength has a lot to do with the setting temperature of the hot roll, and only by adopting an appropriate temperature can better strength be obtained. Of course, the strength of the fiber is also an important factor.

The functional relationship of each process parameter is as follows:

T = F(s, p, t, r)

In the formula: T - strong force;

s - speed;

p - pressure;

t - temperature;

r - the raw material.

Any factor in the formula will affect the strength of hot-rolled non-woven fabrics for hygiene.

3. Elongation

It is usually related to the elongation of the fiber, process temperature and pressure, and also related to the crimp or cohesion of the fiber. Generally speaking, the elongation of the heat thermal bonded non woven fabric for hygiene will be larger if the fiber elongation is large, the process temperature is moderate, the pressure is low, and the fiber cohesion is good.

4. Width

The best solution to solve the width change is to use independent winding and slitting equipment to release the primary tension.

5. Permeability

By increasing the oil content to adjust the contact angle and the pore radius of the heat thermal bonded non woven fabric for hygiene to enhance the permeability. At the same time, the penetration can be accelerated by changing the diameter of the fiber and the density of heat thermal bonded non woven fabric for hygiene. However, the oil content should not be too large, otherwise it will affect the carding performance.

6. Hygroscopicity

Penetrates quickly and rewets well. Therefore, a balance point can be found. Generally speaking, for heat thermal bonded non woven fabrics for hydrophilic sanitation, the penetration is controlled at 1~2. 5s, and the moisture recovery rate is 0. 3%.

7. Improvement of appearance

(1) When white spots appear on the mesh surface, these white spots can be observed through a microscope, and the nodes are loose, which is generally caused by incomplete opening or high local oil content of the fibers, which causes the fibers to entangle ; If the knot is lumpy, it is generally caused by the fiber containing hard filaments or parallel filaments. Strict control and proper adjustment of fiber quality, opening effect and oil content can improve this problem. (2) The shadow on the wire surface is caused by factors such as the condition of the card clothing, the distance between the work roll and the cover plate, and flying flowers. It can be improved by regular calibration of equipment and improvement of fiber cohesion. (3) The appearance of stains is mainly caused by fibers, of course, it may also be caused by foreign objects (flying insects, dust, etc.) falling on the fiber net during the production process of heat thermal bonded non woven fabric for hygiene. For this problem, strengthening environmental management can be improved.