Patent ID: 8356650

Claim:
A working apparatus for pasting two continuous paper webs together, the working apparatus comprising: an upper paper line along which a continuous upper paper web having a pattern printed thereon is driven to travel by a first drive unit in a travelling direction; a lower paper line along which a continuous lower paper web having a pattern printed thereon is driven to travel by a second drive unit; a pasting unit for pasting the upper and lower paper webs together into a combined paper web while registering the patterns on upper and lower paper webs with each other; a combined paper line along which the combined paper web is driven to travel by a third drive unit; a processing unit disposed in each of the upper and lower paper lines upstream, and downstream of said pasting unit for processing said paper web traveling along the corresponding line; a paste applying unit disposed in said lower paper line upstream of said pasting unit and whose paste applying operation can be turned on and off; a tensioner disposed in said upper paper line upstream of said pasting unit for fine adjustment of path lengths of said upper paper web in its traveling direction; an upper paper winding unit disposed downstream of said pasting unit for winding up the upper paper web passed through the pasting unit; and a drive source provided for each corresponding one of said first, second and third drive units, processing units, tensioner, and upper paper winding unit and operable individually; wherein said upper paper line is configured to allow individual travel of the upper paper web through said upper paper line and said pasting unit to said upper paper winding unit while adjusting tension in the upper paper web, and to allow the upper paper web to be brought to a halt when the tension in the upper paper web is stabilized, wherein said lower paper line is configured to allow individual travel of the lower paper web through said lower paper line and said pasting unit to said combined paper line while adjusting tension in the lower paper web, and to allow the lower paper web to be brought to a halt when the tension in the lower paper web is stabilized, wherein said tensioner and said upper paper winding unit are operable to move the upper paper web to register its pattern with the pattern on the lower paper web in said pasting unit, wherein said pasting unit operates to paste the upper and lower paper webs together into the combined paper web at said pasting unit, wherein a portion of the upper paper web not pasted with the lower paper web is cut off by a cutter at a downstream side of said pasting unit, and wherein the combined paper web is thereafter traveled and processed in said combined paper line by operating the units other than said upper paper winding unit.