The history of industrial rewind slitting and roll slitting extends back so far as the early 1800’s after the first industrialized paper making machines was developed in England. Mechanised know-how were primarily used to assisted in the unwind and rewind operations.
Fast forward into the 21st century, nowadays the equipment is now very innovative along with the usage of servo driven magnetic motors in place of clutches and drive techniques that monitor, unwind and rewind tensions instantly. Automatic knife setup units are actually efficient at reducing set up time as well as improving quality, unheard of technology 50 years ago.
Other modern advances that have improved the slitting functionality include driven unwind systems, load cell tensioning and infrared web diameter detection. In effect to deal with large parent rolls and push the web through the rewind slitter, some will use driven unwinds. Load cell tensioning gives total tension system controls particularly for tension sensitive materials. Finally, infrared sensors are utilized to aid in supplying feedback to the central drive and ultimately keep the web at the proper tension from the beginning of the master to the end.
In rewind innovations over the years, the use of continuous wind and turret wind systems have been huge time savers to the rewind process. For continuous winders, after the roll is wound to the proper length, the rewind stops, cuts the web, pushes the finished set out of the way, drops in the next of cores into the rewind chucks, and the next set starts winding. The completed doff can be palletized as necessary. A variation on continuous winding is what’s known as turret winding. Turret winding uses a 2nd shaft to spin into place while the finished set can be taken off of the machine for packing. Turret winding spends a little less time stopped than does a continuous winder.
http://youtu.be/1Jtayctg09I
Using some sophisticated integration with the rewinder, master changes can be made rapidly and extremely little slowdown with the rewind slitter.
If you run an internally converting department or a full service converting firm, finding the most beneficial methods to ensure very little downtime as you can will minimize labor costs and increase earnings. Companies which make use of many of these technologies are poised to be a success in the future.
Thursday, August 7, 2014
Saturday, August 2, 2014
Converting Services Goes Back A Long Time {In The History of Foil Making
Conceived in England from the early 1800’s, commercial papermaking was a massive driver towards the invention and development of industrial rewind slitting machines. The application of mechanical brakes and clutches happen to be the pillar of many of the technology used for the 1st hundred and fifty years of the rewind process.
200 years afterwards, rewind systems have gone electronic by using servo powered magnetic motors and the analog dial has become replaced by electronic drive systems that keep track of tensions while machines are operating. Additionally, at which technology has really taken hold certainly is the utilization of automatic slitter knife set up methods where operator can program their slit widths and as a consequence can simply verify the appropriate slit width through normal quality inspections.
Technology improvements to improve rewinding abilities range from the usage of driven unwinds, load cell tensioning and dynamic web diameter devices. Some materials are extremely stretchy and unpredictable, the cabability to “push†the web through the winder is critical and this approach is used with driven unwind units. For webs that are affected by tension immensely, the usage of load-cells are essential to even out the difficulties those webs can present. Lastly, the usage of infrared systems to observe unwind diameters is helpful in maintaining tensions consistent as a roll starts large and heavy and gets lighter and smaller during the running process.
In rewind innovations over the years, the use of continuous wind and turret wind systems have been huge time savers to the rewind process. A continuous wind system winds the roll to a predetermined length, has a minor stop time to cut the web, push out the finished rolls, drop in the next set of paper cores and then starts the next set. Meanwhile, the finished set can be packaged as needed. While a continuous winder uses one shaft and has a slightly longer change from set to set, a turret winder uses a second shaft that turrets or spins into place after a set is done running. The time between is sets is about 5 seconds on a continuous winder
Lastly, on the unwind side of the equipment, the usage of automatic roll changing apparatus has reduced down time as well.
The Best Slitting Services in the World!
For most converting companies today having the latest and greatest in rewind slitting equipment can reduce set up costs, increase productivity and eventually make more net income. The opportunities to succeed are incredibly good for those organizations that invest time to implement any one or numerous technologies mentioned above.
200 years afterwards, rewind systems have gone electronic by using servo powered magnetic motors and the analog dial has become replaced by electronic drive systems that keep track of tensions while machines are operating. Additionally, at which technology has really taken hold certainly is the utilization of automatic slitter knife set up methods where operator can program their slit widths and as a consequence can simply verify the appropriate slit width through normal quality inspections.
Technology improvements to improve rewinding abilities range from the usage of driven unwinds, load cell tensioning and dynamic web diameter devices. Some materials are extremely stretchy and unpredictable, the cabability to “push†the web through the winder is critical and this approach is used with driven unwind units. For webs that are affected by tension immensely, the usage of load-cells are essential to even out the difficulties those webs can present. Lastly, the usage of infrared systems to observe unwind diameters is helpful in maintaining tensions consistent as a roll starts large and heavy and gets lighter and smaller during the running process.
In rewind innovations over the years, the use of continuous wind and turret wind systems have been huge time savers to the rewind process. A continuous wind system winds the roll to a predetermined length, has a minor stop time to cut the web, push out the finished rolls, drop in the next set of paper cores and then starts the next set. Meanwhile, the finished set can be packaged as needed. While a continuous winder uses one shaft and has a slightly longer change from set to set, a turret winder uses a second shaft that turrets or spins into place after a set is done running. The time between is sets is about 5 seconds on a continuous winder
Lastly, on the unwind side of the equipment, the usage of automatic roll changing apparatus has reduced down time as well.
The Best Slitting Services in the World!
For most converting companies today having the latest and greatest in rewind slitting equipment can reduce set up costs, increase productivity and eventually make more net income. The opportunities to succeed are incredibly good for those organizations that invest time to implement any one or numerous technologies mentioned above.
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