Membrane press and means for elevating a workpiece

Details Membrane press and means for elevating a workpiece Membrane press and means for elevating a workpiece

1995-04-05

1996-06-25

Yoder, Michele K.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With bending, folding, winding, or wrapping means

100299, 100918, 156212, 156360, 1565833, 187273, 269 20, 269 58, B32B 3104, B66B 904

Patent

active

055296580

ABSTRACT:
The invention is an improved membrane press, and method of elevating a workpiece above the supporting surface of a work base. The membrane press includes a work base having a supporting surface for carrying the workpiece, and a foil-pressing frame positioned above the workpiece for heating and applying the laminating foil to the workpiece. The improvement in the membrane press includes a plurality of workpiece-lifting pedestals residing substantially beneath the supporting surface of the work base. A piston is located beneath each pedestal, and responds to the placement of the workpiece onto the supporting surface of the work base. The piston imparts an upward force on certain ones of the pedestals residing adjacent to and beneath the workpiece to raise the pedestals and workpiece upwardly above the supporting surface of the work base. The raised pedestals permit the top surface, corners, and peripheral borders of the elevated workpiece to be laminated.

REFERENCES:
patent: 4314814 (1982-02-01), Derode
patent: 4447282 (1984-05-01), Valerio et al.
patent: 5225027 (1993-06-01), Diekwisch
patent: 5346193 (1994-09-01), Kitagawa
patent: 5397214 (1995-03-01), Cheung
Prof. Rolf Hesch, "Membrane Press Systems A Critical Comparison with View to Heating Systems, Heat Distribution, Pressing Time and Costs," all pages.
Heinrich Wemhoner, "The Development of Membrane Press Technology," all pages.
FDM's Woodworking Technology 2000, "Unbeatable Doors at any Price," Oct. 1993, all pages.

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