Patent ID: 6592705
Filing Date: 2003-07-15
Classification: B26D,Y10T

Abstract:
A method of treating foam board to permit it to be accordion folded comprising:a. moving an elongate foam board at a less than deforming temperature along a longitudinal pathway into a slitting machine; b. stopping the longitudinal travel of said board; c. providing a longitudinally extending side guide system and power operated actuators, and operating said actuators to move said board laterally and hold it against said guide system after stopping said longitudinal travel, thereby releasably securing said elongate board in stationary position; and d. laterally moving longitudinally spaced, longitudinally alternately positioned upper and lower slitting members across the board to produce slits having a depth less than through the thickness of the board and leave a foldable thickness in the board, and releasing said board for travel toward a folding station where it can be accordion folded.