| 摘要 |
PURPOSE:To make it possible to prepare a product having no foam, by compensate ununiformity of contact bonding force in a longitudinal direction generated along with the smaller diameter of a pressure roller by fixing an upper pressure roller in a swinging condition and by using a supplementary pressure roller. CONSTITUTION:An upper machine frame 8 and a lower machine frame 11 are set in a swingable condition by means of a swinging shaft 9 set at such a position that the shaft is separated from each pressure roller 1, 2 in a specified distance. This swinging action is carried out by means of an air pressure apparatus 10 connected with a piston bar at an upper end of the upper machine frame 8. Because a relief pressure in a swinging direction wherein the shaft 9 is its center is produced on the upper pressure roller with inserting a base plate 6, a pushing pressure on the base plate 6 can be gradually increased and as a result, a uniform pressure can be applied. A pressure roller 1 is set in a specified position on the lower machine frame 11 and three supplementary pressure rollers 3 are provided to this roller 1. A pressure roller 2 is also set in a specified position on the upper machine frame 8 and three supplementary pressure rollers 4 are provided to this roller 2. Each supplementary pressure roller 3, 4 and each pressure roller 1, 2 can be driven by transmitting a driving force from the supplementary pressure roller 3 having a common driving shaft. |
