Patent ID: 6131636
Filing Date: 2000-10-17
Classification: B32B,Y10T

Abstract:
A laminating machine of the type which laminates documents between sheets of plastic or on a substrate comprising a housing, first and second sets of upper and lower rolls within said housing having end shafts, one of said sets of rolls arranged to receive material to be laminated and move said material to the other of said sets of rolls, spaced apart end supports in said housing rotatably supporting said end shafts, drive means connected to the lower rolls of each pair to drive said lower rolls, said upper rolls of each pair mounted in said end supports to move upwardly to accommodate material of variable thickness, resilient power transmission means connected between said upper rolls and said lower rolls and driven from said lower rolls to maintain synchronization of rotation of said upper rolls with said lower rolls and to bias said upper rolls downwardly while permitting said upper rolls to move upwardly to an extent dependent on the thickness of material passing between said pairs of rolls.