Slitting & Rewinding
Non-contact length and speed measurements help converters to minimise waste and bill-backs
E
very rolled goods manufacturer needs to ship the correct amount of material to their customers. But that’s not so easy when the manufacturer is using a contact encoder to control the amount of product on the roll.
Most manufacturers use a contact method of measuring length at the slitter/ rewinder to ensure they have the correct length of product on the roll. They may use a contact encoder or pulses off the drive, but both methods present accuracy problems. Any contact-based method of length measurement is subject to several types of error. Contact-based methods typically rely on measuring how fast a wheel of known circumference moves around. There will always be some amount of slippage, making it appear that there is more product on the roll than really exists. Also, the circumference of the measurement wheel
can increase because of dirt buildup or decrease because of wear. The system needs to be recalibrated often to minimise error.
To fix this problem, NDC
Technologies offers the LaserSpeed Pro gauge. LaserSpeed Pro provides non-contact length and speed measurement through a unique, laser- based technique. Since it measures the product itself, slippage is not a problem.
This highly reliable gauge is designed for heavy industrial environments, is easy to install, and never requires recalibration. The measurement is performed optically, so there are no moving parts to wear out.
The LaserSpeed Pro’s measurement accuracy of 0.03%, and repeatability of 0.02% offers a fast payback in savings.
Instead of an uncertainty of 400 foot per every 20,000 feet with the contact method, the LaserSpeed lowers the possible error to a maximum of 10 feet on a 20,000 foot roll. The LaserSpeed Pro can literally pay for itself in a matter of weeks.
Xwww.ndc.com Brotech-CDF-330 installed at Leo Designs and Packaging L
eo Designs and Packaging is a diversified package printing company located at Nalagarh in the North Indian hill state of Himachal Pradesh. Spread over four acres of land and 70,000 square feet shopfloor, Leo’s product offerings from this single facility include self adhesive labels, lamitubes, monocartons, eflute cartons and regular shipper cartons. With a diverse product portfolio, the business delivers to an impressive
list of renowned brand owner companies. In a recent move to complement its acquisition of a digital label press Leo’s has invested in a Brotech digital finishing equipment.
The Brotech CDF 330 equipment was recently installed at their factory and is successfully commissioned. The machine is configured with, one flexo station for printing or cold foiling or varnishing, option of rotary or
intermittent die-cutting, slitting and rewinding, it can also handle slitting of lamitubes. The sale of this machine was handled by Brotech’s exclusive Indian agents Weldon Celloplast based in New Delhi. Commenting on the installation Varun Rao, managing director at Leo Design says: “We researched and were recommended Brotech by leading equipment suppliers, it is a good equipment.” He further adds that “the installation has been efficiently handled by Weldon.”
Weldon Celloplast is a solutions supplier to the label and packaging industry. It represents leading suppliers of equipment, tooling and consumables besides offering tamper evident label materials for security labels. Kanwardeep Sahni, managing director of Weldon says: “Leo’s march into the diverse label and packaging segments is very impressive and they have a penchant for selecting the best equipment. We are happy for this installation and hope the association with Leo will grow as they continue to expand and service the growing label and packaging industry.”
Xwww.weldoncelloplast.com
26
September 2021
www.convertermag.co.uk
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