After being dyed, carpeting must be washed and rinsed in clear water. In this process the carpet becomes soaked with water, which must then be extracted gently and economically. To do so the carpeting is passed over a suction roller with an adjustable suction slot. A vacuum pump connected to this suction roller draws air through the slot, thereby extracting about 80% of the water remaining in the carpet. The steady stream of air ensures a gentle treatment of the material. The continuous flow of water is easily removed and subsequently eliminated along with the operating liquid.
To facilitate the positioning of heavy bolts of cloth for processing, an air cushion is generated in the cutting table via a perforated plate. Once the bolt is positioned, a vacuum holds the cloth in place for processing on the table top.
To make it easier to change filling bobbins, the starting ends of the threads on the filling bobbins stacked in the magazine are automatically drawn in and tensioned. Once all the yarn on a filling bobbin has been used, the starting end of the thread is cut, extracted and placed in a thread receptacle in front of the blower. When the weaving process is completed, the edge of the fabric is vacuumed to prevent leftover thread from being dragged into the shed.
During the knitting process, compressed air is applied to hold the finished portion of the sock inside the stocking tube so that the knitting needles can work freely. Stray threads are vacuumed away. When knitting is finished, the socks are sucked out of the tube and into a bin by means of a compressed air line, which is connected to the receiving bins for the individual knitting machines.
Yarn in spinning machines is wound around spools, giving the thread a curled profile. To further process the yarn, however, the threads must be straight. For this purpose, steam is applied to the yarn to break the alignment of the material molecules and smooth out the fiber structure.
Elmo Rietschle is part of Gardner Denver, Inc., a leading global manufacturer of highly engineered products. Gardner Denver is headquartered in Milwaukee, Wisconsin, USA and has facilities in more than 30 countries.
To learn more about Gardner Denver, Inc., please visit www.gardnerdenver.com.