Patent ID: 9573336
Date: 2017-02-21
CPC Classifications: B31B,B32B,B42D,Y10T

Claim:
1. A machine for gluing sheet stock having a head end terminating in an edge and a tail end, comprising: an input nip for receiving the sheet stock pre-folded along a line parallel to the head and tail ends in overlapping registration, with the tail end extending beyond the edge of the head end; a clamp mechanism for holding the overlapping sheet stock in position; a folding mechanism for applying an initial fold to sheet stock while clamped, such that the tail end is partially bent over the edge of the head end; a glue applicator for applying glue to the initially folded tail end while the sheet stock is clamped; an output nip for receiving the initially folded tail end with the glue applied, the output nip being operative to continue folding the tail end over the head end, thereby pressing the glued side of the tail end against the head end; wherein the glued sheet stock is ejected out of the machine through the input nip.