APPLICATION REPORT | PAPER & CARD
R A Whiting Corporation 25 imperial ton bridge crane for handling kraft packaging paper rolls.
unit connected to each other via a modem that runs through a secure 3G network. Snook says that a growing trend in paper
mills involves using hoists for smaller tasks and lighter loads. A renewed focus on ergonomics is driving companies to seek out light-duty lift assist products for loads as small as 13 kilograms. The demand among pulp and paper mill operators, he says, is for lifting products that can enable a high uptime and prevent product damage while also reducing repetitive strain injuries among operators. Another trend on the rise is automation.
Gerhard Lange, Paper Industry Process Cranes project manager for Demag in Düsseldorf, North Rhine-Westphalia, Germany, says the paper industry’s growing sales reflect the sector’s willingness to invest. Lange says the pressure to automate processes and logistics in the paper industry is always increasing, which has led Demag to design new dry reel handling automation solutions. “We’re receiving a number of inquiries
for fully automated stores for corrugated- board plants,” Lange says. “Sometimes, these are installed right behind the
production plant. In contrast to shipping warehouses, the material flow in this type of store is not dictated by truck loading times, but by production processes.” Demag has several paper industry
projects in the installation and startup phase. Lange cites the example of a paper roll warehouse in Asia that will soon enter service. When completed, it will be the largest paper roll warehouse in the world, featuring nine cranes in three bays. The cranes will handle the storage and logistics for a new paper machine. Demag recently completed an installation of an automated vertical paper roll storage system for Laakirchen Papier, a Heinzel Group subsidiary headquartered in Laakirchen, Gmunden District, Austria. The material handling system consists of two Demag process cranes equipped with winches and vacuum lifting units. Each of the two 33-metre-span process cranes can move single rolls or pairs of rolls weighing up to 4.5 metric tonnes. The winches can travel independently of each other and can move up to 104 rolls per hour, taking 30% less time than a ground-based storage and loading system.
“This technology helps to achieve higher handling rates compared to conventional single-trolley technology,” Lange explains. “Higher handling rate requirements can even be met for systems limited in size.” Demag is also installing a number of
warehouse management systems for paper shipping facilities. This system, Lange says, enables shipping sites to better utilize the space outside of the storage area. The system’s yard management tools enable operators to run computer simulations of loading and unloading processes in order to find process efficiencies that can shorten turnaround times. Lange says that paper producers around
the world are under considerable pressure to expand production capacity in order to meet demand. The European and Asian manufacturing industries need cardboard for product packaging, and specialty paper products like graphic paper and facial tissues are growth drivers within the paper industry. The pressure to keep productivity high, Lange says, has even prompted Demag to develop a new solution for a client that minimizes downtime.
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