This journal has the usual mixture of snippets of news and articles. Of which the following two articles were, for me, the highlight of this edition.
In this issue I was delighted to find an article on web cleaning entitled ‘Wiping the slate clean’. This article is more of an advertorial for a number of company products than an independent review of competing technologies. The article does describe the general problem of web contamination along with some of the basics of the different cleaning techniques. The article is also very light when it comes to detailed information on the cleanliness of the film. The two specific bits of information that were included was that the tacky roll process from Teknek could remove debris as small as 1 micron and that the ultrasonic air knife and vacuum extract from Shinko could remove particles of 1.6 microns and above.
In the past both of these techniques have been used to remove particles down to 0.3 microns although this is much more difficult and it may be that they cannot guarantee this level of quality and so are using values that are more easily achievable.
In a similar type of advertorial there is an article entitled ‘No need to get wound up’ that deals with winding issues. Although this article is directed at the winding of webs at atmospheric pressure a number of the basics are equally applicable to winding webs in vacuum. Also as we all take webs that have already been wound in atmospheric pressure we need to know what we are receiving and why the rolls are in the condition we see them in.
If any of you wish to find out more about this Journal the web site is www.C2-europe.eu
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