Narrow slit widths - is it worth investing in narrow differential chucks?

As a part of our differential chuck range we have 9mm wide differential chucks that are suitable down to a slit width of 10mm. The overall cost of differential shafts will rise slightly the smaller your minimum slit width. The 9mm wide diff chucks aren't especially expensive, you just need more of them if you're slitting the full width of the shaft. Some customers use a variety of chuck widths (and / or spacers) on their shafts then have the operators move the chucks around according to which job is being run, this takes time, so other customers load their entire shafts with narrower width chucks. The logic being that the initial cost of the chucks is quickly mitigated by the saved labour and time costs. Wide rolls will run on narrow differential chucks without any issue, whereas narrow slit rolls will not wind happily onto wide differential chucks.

So is it worth investing in narrow differential chucks? The answer is yes!

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Trim removal on slitters

A trim fan attached to a slitter. As discussed previously on this blog the process of slitting (at its most basic) can be reduced to the one-line description of ' a big roll is loaded on one side of the slitter rewinder, and smaller rolls are loaded off the other side' and that's fine... most of the time. Here comes the example! If a 1000mm wide roll is loaded onto a rewinder and is slit down into rolls that are 212mm wide then four rolls would be produced. If your mental maths is up to scratch you might have noticed that 4x212 does not equal 1000, and that means that from the original / master / jumbo roll there will be roughly 117mm left over. Sometimes this happens because the edges of jumbo rolls are discarded due to damage, print reasons or simply because the material being slit isn't coated all the way to the edges of the roll. So what happens to this waste material? Waste material can be wound onto cores in the same way 'correct' rolls are, ...

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We need to talk about how you're handling this...

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Slitter Man

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