Slitter Man

Sometimes when cutting cores in a core cutter odd lengths are left over, they are too short to be useful so they are either discarded as waste or taped to other waste cores in an attempt to join several bits of scrap together to create a single usable core.  Taping several lengths of core together can create potentially dangerous problems that I won't go into, needless to say it's not a great idea! But I can see why companies wish to minimise scrap core waste, so here's a potentially better way of doing so: Save money and minimise core wastage without using tape to join together scrap bits of core Several of our customers buy in parent cores at multiple lengths and then use the most appropriate cores for each job.  We have designed our Core Cutter to accurately measure the parent core as it is loaded, the machine then works out how much trim to cut off meaning that each subsequent cut creates a usable core. One of our customers had an aggressively low target for reducin...

When you get right down to the gritty details of cardboard cores you'll find that no two core suppliers are quite the same, and when bought in bulk no two parent / master cores are quite the same length.  As your freshly purchased cores come off the transport and into your life you'll find the lengths in the batch are very similar, but they are infrequently all  exactly the same size. The variations in core lengths will often be very small, but when you're as focussed on minimising waste when cutting cores as you are focussed on cutting accurate core lengths then knowing exactly how long your parent cores are is crucial.  You could have your operator measure every core as it comes off the pallet, but that would be time consuming, and with the best will in the world it would probably also be inaccurate. Core cutter auto-trim Our CCA Automatic Core Cutters solves the problem of irregular sized parent cores by having a switch-able 'auto-trim' function. ...

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, ...