This rollchange appears to be during makeready I guess running about 600fps almost ready to count the splice was manual appears they use a cheaper stock on MR like a 36lb coated job may require 45lb stock that why they change rolls part way the pressman told the rollman to make the splice they are ready to count. This rollstand appears to be a hybrid part MEG part BUTLER you can see the festoons going from run high to run low behind the roll at the splice.
Don't know how I got to this video/comment but that isn't waste even in a production run. Most companies require you to splice out butt rolls around 25-30 inches so they can be used at start up of the next job with that paper. If not you get a situation where you either scrap small rolls or try to run them if the splicer can load them fast enough.
Was a "demonstration" for us while we were having a tour of the facility.
The stub end was re-used later in the run.
how come it changed with the stub so big?
This rollchange appears to be during makeready I guess running about 600fps almost ready to count the splice was manual appears they use a cheaper stock on MR like a 36lb coated job may require 45lb stock that why they change rolls part way the pressman told the rollman to make the splice they are ready to count. This rollstand appears to be a hybrid part MEG part BUTLER you can see the festoons going from run high to run low behind the roll at the splice.
The swap was purely a ‘demonstration’ for our benefit.
There aren't festoons, only a dancer. The movement you're seeing behind the roll is althe severer that positions for the splice.
40 mph?? Really......that's approx 3500 fpm. Can tell by sound and watching the new roll, that the press is NOT running anywhere near that speed!!!
I watched at 0.25X speed and still could not tell what was happening.
It was a demonstration of how they swap out the rolls of paper without stopping the press.
what make is this
james wilson not sure I'll see if I can find out for you.
The printing term for this is Splice.
And what is it called if the splice fails,?
You shout "WEB OUT"@@robertcaves3797
We would call a failed splice a miss. Cause fiber separation.
@@robertcaves3797 roll tender owes operator a 12 pack
To much waste
Wasn't wasted was reused later, was only changed as a demonstration for us
Don't know how I got to this video/comment but that isn't waste even in a production run. Most companies require you to splice out butt rolls around 25-30 inches so they can be used at start up of the next job with that paper. If not you get a situation where you either scrap small rolls or try to run them if the splicer can load them fast enough.
Has it ever break changing rolls of paper?