| 摘要 |
Apparatus for and process of folding and securing edges of a relatively large wrap over corresponding edges of a smaller board positioned on and in contact with an adhesively coated surface of the wrap to form a laminated work-piece, the work-piece being moved in a first direction to a first wrapping head having a pair of movable jaws defining a slot. An edge if the sheet extending from the work-piece, is engaged and folded over a corresponding edge of the board and adhesively adheres to the opposite surface of the board. The folded-over edge is then clamped between the jaws of the first wrapping head and carried in that manner in an opposite direction in a parallel but displaced second plane to a similar slot in a second, like, wrapping head. At the latter, the opposite edge of the sheet extending from the work-piece is similarly engaged, folded over and adhered to the board. The folded over opposite edge is then clamped by the jaws of the second wrapping head which serves to transport the work-piece in that manner, back in the first direction but in a third plane displaced from the first and second planes, for side-edge wrapping. |
