Web sensing systems and web scanning systems are used for web or other flat-sheet production processes. Web sensing and scanning systems can employ a variety of sensors that scan across a moving web to detect defects and measure parameters such as product basis weight, thickness and moisture. Web sensing systems and web scanning systems use tension sensors which employ a transducer to measure static or running tension in webs or sheets during textile manufacturing, paper manufacturing, and other sheet materials.
There are many different uses for web sensing and scanning systems. Examples include measuring change in electrical resistance during paper production and textile production. Paper production involves a process of separating cellulose fibers from impurities in wood or used papers and then manufactures paper by a series of steps. Textile production involves the production of wool, cotton, linen and thread by the process of spinning, knitting, and weaving. A web handling system uses a synchronized dual stepper motor to control and to provide quiet, reliable, high speed operation along with constantly compensating small variations in the product. Other web sensing and scanning systems are commonly available.
There are several ways in which web sensing systems and web scanning systems function. Web sensing systems and web scanning systems use sensors. The specifications of web sensors include controls that can be computer programmed or manually controlled. A web handling system can operate at speed of 300 pouches per minute and it can feed pouches up to 3/8 inches thick, 3 inches wide, and of any length. The textile manufacturing process consists of four stages which are yarn formation, fabric formation, wet processing, and fabrication. The paper manufacturing process involves uniform removal of water in the dilute suspension of fibers to form the paper without any curls. The paper manufacturing process involves many processes such as gravity dewatering, vacuum dewatering, mechanical press, and thermal drying. Web sensing and scanning systems are designed and manufactured to meet most industry specifications.
Web sensing systems and web scanning systems are used in many applications. Examples include paper products for writing, shaft application, and in sensing defects. Web sensing and scanning systems are integral in controlling functions, temperature compensation, and system calibration.