Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With bending – folding – winding – or wrapping means
Patent
1993-05-11
1995-03-28
Ball, Michael W.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With bending, folding, winding, or wrapping means
156499, 156507, 15658391, B29C 5304, B30B 700
Patent
active
054013550
ABSTRACT:
A vacuum forming mold has a plurality of dies with at least one die being movable with respect to the other dies. The die can be movable in a linear direction or they can be movable in both a linear and angular direction. A plurality of plastic sheets are heated and placed on a respective die with a vacuum being supplied through the dies to attract the plastic sheet. Once formed, the dies are moved together to create a seam bond between adjacent pieces of plastic sheets. Additional heating can be supplied to insure an adequate seam bond if required. In another embodiment, a single sheet of material composed of a plurality of sheets of material is used. The single sheet of material has a plurality of preseamed areas connecting each of the individual plastic sheets. These preseamed areas are positioned inbetween adjacent dies of the plurality of dies and the process continues as described above for the multiple sheets of material.
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Ball Michael W.
Crispino Richard
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