| 摘要 |
<p>In an improved apparatus for the plasticisation of format documents or drawings, the heat-sealing film 16, of slight thickness, is unwound from a spool 18, driven by a heated roller 20, to which is coupled, along the horizontal axis X, a drum 22, and along the vertical axis Y an additional roller 38, provided with elastic projections 42 that are off-centre relative to said axis. The drum 22 incorporates a blade 36, slightly projecting, which is able to cut the film or foil 16. A lever arm formed by two orthogonal branches 46, 48, oscillating by means of a cam 52, moves the roller 38 against the roller 20 during the phase of application of the film 16 to the paper backing 44, being compressed between said rollers and inserted into the apparatus via an opening 56 produced in the body 12. <IMAGE></p> |
