| 摘要 |
<p>1,211,182. Laminating apparatus. WOOD INDUSTRIES Inc. 10 March, 1969 [8 March, 1968], No. 12475/69. Heading B5N. Double-faced pressure-sensitive sheet drawn from a supply roll having a paper backing separating adjacent layers of adhesive sheet is applied to an article by apparatus comprising a rotatable shaft for carrying the supply roll, a rotatable mandrel about which the paper backing stripped from the sheet may be wound, drive means operatively connecting said shaft with said mandrel, and speed-changing means so associated with the drive means that the peripheral speed of the paper backing when being wound on the mandrel is higher than the peripheral speed of adhesive sheet being unwound from the supply roll in order to tension the backing being wound on the mandrel. A rotary shaft 17 supports a roll 18 comprising a web 19 of double-faced pressure-sensitive adhesive interleaved with a web 20 of backing paper. In use, the combined webs are drawn around a roller 23 and over a fired finger 26. The webs are then separated from one another and web 20 is led through the nip of rollers 28 and 29, around a roller 30, and on to a mandrel 31 to be wound thereon into a roll 33, mandrel 31 being mounted on a shaft 31<SP>1</SP> received in vertical slots 32. The surplus portion of web 19 projecting beyond finger 26 is removed thereat, roller 23 is adjusted by screw means 24, 25 to remove wrinkles from the webs passing thereover, and structure 15 supporting the shafts 17, 31<SP>1</SP>, and finger 26 is shifted by a fluid motor 16 until finger 26 engages a printing saddle S releasably secured to a rotary cylinder 5. The latter is then rotated via a driving chain 4, and web 19 is thereby progressively attached to saddle S. A roller 35, driven by engagement with roll 18, is coupled by gearing with roller 29 for driving the latter at a peripheral speed greater than that of web 19 to tension web 20 for stripping the latter from web 19. Roller 29 is coupled by gearing to a roller 41 engaging roll 33 to rotate the latter at a peripheral speed greater than that of web 19 to ensure tight winding of roll 33, shaft 31<SP>1</SP> moving upwardly to accommodate the increasing diameter of roll 33. When saddle S is completely covered by web 19, cylinder 5 is halted and web 19 is severed transversely by a knife 61 mounted on a carrier 62 slidable transversely on a guide bar 63. The free end of web 19 adheres to a strip provided adjacent to nose 26, and motor 16 is actuated to retract nose 26. A carrier 10, slidable on rods 13, is then advanced to engage a thin flexible printing plate P, adjustably secured to carrier 10, with the leading edge of saddle S. Cylinder 5 is then rotated, whereby plate P progressively adheres to saddle S, which is then removed from cylinder 5 for use in a rotary printing press.</p> |
