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An important factor that affects the filtering effect of the filtering non-woven fabric-network uniformity
by：Sunshine
2021-04-09
Increasing the production speed may harm the filtering efficiency of the filter non-woven fabric. Network uniformity is the key to all filtration applications; however, the filter non-woven fabric manufacturers usually do not have as many fiber sizes, unit weights, and other physical properties as their products Prioritize the uniformity of the network of development activities.
Network uniformity should be a priority, because it is the main controlling factor in key applications, spot-to-spot network uniformity is a non-woven fabric net for personal value analysis at predetermined measurement points, rather than the average level of production batch numbers .
As non-woven fabric manufacturers compete to be more competitive, they often increase production speed to reduce costs; in many cases, this operation has the negative result of greatly reducing the uniformity of the web. Today, some non-woven fabrics, one square inch compared to another square inch, in the same web changes in unit weight, thickness, pore size and air permeability of more than 50%.
Generally, when the unit weight is reduced, the web non-uniformity from spot to spot becomes more obvious. In order to overcome this shortcoming, filter non-woven fabric manufacturers and end users of non-woven fabrics have tended to be weighted by higher-level units, which significantly increases their costs. In addition, the spot-to-spot web uniformity at a specific degree of non-woven fabric limits its ability in many applications.
Today, uniform application is the most critical. For example, reverse osmosis membrane support substrates generally use non-woven materials, such as synthetic wet paper. Spunbond nonwovens have captured some of these key applications in the past few years, but the uniformity has generally deteriorated in the past few years and no longer participates in this market. With the increased uniformity of the network of accent points and light points, spunbond nonwoven manufacturers must regain the potential for some of these key applications.
The actual test using some of the latest spunbond technology currently available has shown that a very uniform spunbond can produce close to wet-laid webs when running under specific conditions. The characterization method used by textile manufacturers for process control and product release does not accurately reflect the uniformity of the spot-to-spot network, because the width of multiple samples from all over the country is combined with the network to calculate the average level of product batches.
In addition, the measured samples are usually too large, which accurately reflects the uniformity of the spot to the spot net. The smaller the sample size, the better the network uniformity can be characterized.
Network uniformity should be a priority, because it is the main controlling factor in key applications, spot-to-spot network uniformity is a non-woven fabric net for personal value analysis at predetermined measurement points, rather than the average level of production batch numbers .
As non-woven fabric manufacturers compete to be more competitive, they often increase production speed to reduce costs; in many cases, this operation has the negative result of greatly reducing the uniformity of the web. Today, some non-woven fabrics, one square inch compared to another square inch, in the same web changes in unit weight, thickness, pore size and air permeability of more than 50%.
Generally, when the unit weight is reduced, the web non-uniformity from spot to spot becomes more obvious. In order to overcome this shortcoming, filter non-woven fabric manufacturers and end users of non-woven fabrics have tended to be weighted by higher-level units, which significantly increases their costs. In addition, the spot-to-spot web uniformity at a specific degree of non-woven fabric limits its ability in many applications.
Today, uniform application is the most critical. For example, reverse osmosis membrane support substrates generally use non-woven materials, such as synthetic wet paper. Spunbond nonwovens have captured some of these key applications in the past few years, but the uniformity has generally deteriorated in the past few years and no longer participates in this market. With the increased uniformity of the network of accent points and light points, spunbond nonwoven manufacturers must regain the potential for some of these key applications.
The actual test using some of the latest spunbond technology currently available has shown that a very uniform spunbond can produce close to wet-laid webs when running under specific conditions. The characterization method used by textile manufacturers for process control and product release does not accurately reflect the uniformity of the spot-to-spot network, because the width of multiple samples from all over the country is combined with the network to calculate the average level of product batches.
In addition, the measured samples are usually too large, which accurately reflects the uniformity of the spot to the spot net. The smaller the sample size, the better the network uniformity can be characterized.
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