Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Reexamination Certificate
2007-05-01
2007-05-01
Crispino, Richard (Department: 1733)
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
C219S121640, C219S121660
Reexamination Certificate
active
10667708
ABSTRACT:
A method for joining workpieces made from plastic, the upper workpiece, facing a laser source, consisting of a material transparent to the laser beam, and the lower workpiece consisting of a material absorbent to the laser beam, such that the mutually bordering contact surfaces for the two workpieces melt and are joined to one another under pressure during a subsequent cooling, the guiding of the laser beam onto the site to be joined, and the mechanical compression of the workpieces being carried out simultaneously by a machining head. The corresponding device comprises a machining head with focussing devices for the laser beam onto the contact surface, and pressure-exerting devices for compressing the workpieces. A rotatably mounted glass ball or roller is particularly suitable as pressure-exerting device. The invention permits welding quality to be assured in conjunction with flexibility of the welding operation without expensive and complicated damping balls.
REFERENCES:
patent: 4636609 (1987-01-01), Nakamata
patent: 43 19 742 (1994-12-01), None
patent: 58163587 (1983-09-01), None
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Machine Translation of DE 4319742.
Translation of DE 4319742.
Chen Jie-Wei
Niederberger Adolf
Bachman & LaPointe P.C.
Crispino Richard
Leister Process Technologies
Schatz Christopher T.
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