This paper gives information about device of gross for fabrication of polymeric fluted sheet, capacity of grosses, the experimental study of the hydrodynamic characteristic of the melt form of the polymeric materials and the characteristic features of toughness of the fluted sheet. Authors gave special emphasis on reological features, factor of volume increasing, moisture cheese, toughness at spraining and density fluted sheet. (C) 2006 Wiley Periodicals, Inc. J AppI Polym Sci 103: 72-80, 2007