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The current dust control technology in the paper and other web based industries is to use high volume "area hood" or "air foil" vacuum systems to ventilate an area in and around a machine.
Advantages to this technology is that is somewhat easy to implement.
The disadvantages of this technology are:
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Marginally effective
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Does not actively clean the web
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Requires more vacuum per unit width of web
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Requires more space in and around the machine which makes it difficult operate and maintain the machine without first moving the duct work out of the way.
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Is only effective on one side of web.
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The open slot designs can "eat the web"
