Patent GB-1009697-A (GB)
Title: Rolled paper, method of, and apparatus for securing the free end thereof
Inventor: ALEXANDER ROBERT CURTIS
IPC: B65H19/29
Filed: 1962-05-25
Abstract: 1,009,697. Packages and packing machines. KIMBERLY-CLARK CORPORATION. May 25, 1962, No. 20309/62. Heading B8C. [Also in Divisions A4, B6] The free end of a roll of paper is secured by lightly moistening a small area of the final layer of the roll near the free end and compressing part or all of the moistened area to cause the outer layer and a small number of layers thereunder to interlock. In one form of machine for securing the ends of rolls of paper, e.g. rolled toilet tissues or rolled paper towels prior to wrapping, a log of rolled paper which is subsequently sawn transversely into rolls, is fed by a member 30a on a conveyer 30 to a conveyer 34 and beneath a heated platen 36 which may be plain faced or may carry on its lower face a number of embossing dies. The leading end of the log first actuates a switch 31 to open a nozzle 33 providing a finely atomized spray impinging on a longitudinal strip of the log, and subsequently, when the log is positioned beneath the platen 36 actuates a switch 35 to stop the conveyer 34. The member 30a now actuates a switch 37 controlling a valve 46 to cause the admission of pressure air to the tops of two cylinders 42, 43 so as to move the platen downwardly into contact with the log. During such movement, a finger 52 on a connecting rod 41 operates a time switch 51 which actuates the valve 46 to cause upward movement of the platen 36 after pressure has been applied to the log for the required time. As the rod 41 moves upwardly a toggle switch 54 is actuated and air is admitted to a cylinder 55 which operates a kicker bar 59 to push the log laterally off the conveyer. An arm carrying the kicker bar releases a switch 35a to allow the conveyer 34 to operate at the commencement of another cycle. If a malformed log is presented to the conveyer 34, an attendant swings a gate 61 away from a position in the path of the log so that the latter continues to move with the conveyer 34 to a reject receiver. As the gate 61 is moved, it operates switches 61a, 61b which allow the conveyer 34 to continue its movement, but prevent operation of the platen 36 and kicker bar 59. The moistening fluid may have adhesive properties. In another form of machine, Figs. 3, 4 (not shown), a log of rolled paper is fed into a trough beneath a platen carrying a number of dies corresponding to the number of rolls and each carrying an embossing-die portion. During its movement into the trough, the log trips a switch which causes a nozzle to apply a finely atomized spray along a narrow band of the outermost layer of paper near its free end. When the log is positioned in the trough it actuates a timing switch causing operation of piston-and-cylinder devices which move the platen so as to press the dies against the log so as to cause isolated areas of the top layers of the log to interlock. The dies are heated so that they also act to dry the sprayed area. The treated log is ejected on to an inclined table into a carrier which moves the log at intervals into the path of a saw cutting it into rolls.