Process and apparatus for sheet overlaying fabrication

Details Process and apparatus for sheet overlaying fabrication Process and apparatus for sheet overlaying fabrication

B - Operations, Transporting

32

B

154/41

B32B 7/12 (2006.01) B32B 31/00 (1980.01)

Patent

CA 1124629

ABSTRACT OF THE DISCLOSURE The present invention provides a process for sheet overlaying fabrication wllich comprises the steps of: spray coating a workpiece which is caused to travel automatically with a water-soluble adhesive containing an additive reducing the viscosity thereof; semidrying the adhesive thus applied onto the workpiece; and bonding a thermoplastic sheet onto the workpiece by placing the sheet on the adhesive thus semidried on the workpiece and heating and pressing the sheet against the workpiece. By reducing the viscosity of the water-soluble adhesive, it may be applied with a spray gun. The disadvantages of solvent based adhesives are thereby avoided.

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