Building & Industrial Mat

Papermaking felt plays important roll in paper industry. As the speed of papermaking machine steadily increases, running stability of papermaking felt becomes more and more serious. The transverse vibration of papermaking felt will affect the quality of paper sheet, even damage the paper machine. The bending stiffness is the key properties of papermaking felt that influences its dynamic performance. Now Pierce's cantilever method is widely used captive testing the bending stiffness of fabrics. When testing the papermaking felt, the bending length is not in the range of measurement. The felt specimen is analyzed based on the cantilever principles in this paper. A mathematical approach simulates the theoretical bending curve of a felt specimen. The actual curvature is obtained using the cantilever method by taking a photo of the sample. Compared the theoretical and the actual bending curve, the conclusion can be drawn that the Peirce's method can also be used to measure the bending stiffness of paper-making felt. The bending stiffness of papermaking felt was also dynamic measured by vibration method. The bending stiffness is calculated from a formula, which contains the natural frequency of the felt specimen. There is linear relativity between the bending stiffness obtained by captive and dynamic testing. The relation between the bending stiffness and the structure of papermaking felt is also analyzed in the paper. Not the texture of the net but the structure of the papermaking felt affects its bending stiffness. It is important for papermaking felt designing.

Ready-to-use multi-component binder system with superior moisture resistant properties for glass mat application and/or composite boards with glass mats combinations.

Growing trends in home design such as open floor plans, cathedral ceilings and home offices coupled with an increase in noise sources in today's homes (home theaters, video games, and computers) often lead to a less than desirable sound experience for home buyers. Leading researchers in the area of noise pollution have identified that noise not only affects productivity, it also affects health. Noise has been linked to increased blood pressure, headaches, insomnia, and slower cognitive development. Ethnographic studies indicate homebuyers are also modifying their behavior around growing noise issues inside the home. This presentation will educate attendees in a new trend in home design that includes understanding the homebuyers and the noise expectations within the home.