Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Reexamination Certificate
2001-09-13
2004-06-29
Aftergut, Jeff H. (Department: 1733)
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
C156S213000, C156S308200, C156S309600, C156S309900, C156S322000
Reexamination Certificate
active
06755929
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to laminates, and more particularly to a method for forming a titanium layer on a ferrous or nonferrous workpiece by adhering a polyolefin, polyamide, or polyurethane layer therebetween so as to enhance a bonding strength of titanium on the workpiece and smooth the surface thereof.
BACKGROUND OF THE INVENTION
It is well known to laminate a titanium layer on a ferrous or nonferrous workpiece. A typical process referring to
FIG. 1
comprises the steps of coating an adhesive
92
on the underside of a layer of titanium
93
at room temperature, and adhering the layer of titanium
93
onto a workpiece
91
. However, the prior art suffered from a couple of disadvantages. For example, the coating of the adhesive
92
on the underside of the layer of titanium
93
is not uniform. Further, the process is time-consuming. Furthermore, a plurality of bubbles exist within the adhesive
92
because the manufacturing process is performed in a non-vacuum environment at room temperature. As a result, the layer of titanium
93
tends to peel off the workpiece
91
after a predetermined period time of use. Moreover, the formed workpiece
91
does not have a smooth surface. Thus, the need for improvement exists.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide a laminate forming process comprising the steps of (a) installing a heater assembly in a processing chamber, the heater assembly having a diffusion screen secured below; (b) coupling a vacuum assembly to a plurality of channels of a platform; (c) continuously conveying layers of titanium and solid adhesive at room temperature onto a workpiece on the platform for heating the processing chamber to a predetermined temperature by the heater assembly through the diffusion screen so as to evenly apply heat to the layers of titanium and adhesive and the workplace and melting the layer of adhesive; and (e) activating the vacuum assembly for sucking the layers of titanium and adhesive onto the workpiece through a communication of the channels so as to secure the layers of titanium and adhesive onto the workpiece and smooth the layer of titanium.
REFERENCES:
patent: 4894102 (1990-01-01), Halls et al.
patent: WO-94/05483 (1994-03-01), None
patent: WO-95/03176 (1995-02-01), None
patent: WO-96/39294 (1996-12-01), None
Chen Ching-Ping
Sun Huei-Hsin
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