Process for sheet lamination
OwnerJames E. Hoyleinventor
Life of this patent
Estimating the term…
Abstract
Process for forming and securing a polymeric sheet onto a planer board, process for making a lap desk, a die apparatus used in the process, and the laminated board product. The process includes the steps of gluing an oversize sheet onto the board and drawing the board through a heated die to bend the edges of the sheet onto the periphery of the board. The lap desk is formed by gluing a bag to the periphery of the board, filling the bag with stuffing, and drawing the sheet, board and stuffed bag through the die to laminate the sheet to the board. The die apparatus includes a frame to hold the assembly as it is drawn through the die, and a press for pushing the assembly through the die.
Claims12
Process for forming and laminating a polymeric sheet, having a peripheral portion and an edge, onto a planar board having an edge, comprising:
- creating an assembly by placing the sheet against the board with the edge of the sheet extending beyond the edge of the board;
- heating the peripheral portion of the sheet to render the sheet formable and bendable over the edge of the board around the periphery of the board;
- moving the assembly on a path normal to the plane of the assembly in a given direction through a substantially rigid forming die having a die passage slightly larger than the planar periphery of the board;
- causing the die to bend and form the peripheral portion of the sheet over and adjacent the edge of the board around the periphery of the board;
- completing the drawing of the assembly through the die and expelling the assembly from the die in said given direction.
Dependencies are inferred from the claim text.