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Method and device for ultrasonic welding

  • US 5,403,415 A
  • Filed: 11/17/1993
  • Issued: 04/04/1995
  • Est. Priority Date: 11/17/1993
  • Status: Expired due to Term
First Claim
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1. A method for modifying an ultrasonic horn having a planar energy-applying surface intended to contact a first thermoplastic part to be welded to a second thermoplastic part, said method comprising:

  • forming a planar base and at least one coplanar region on said surface, wherein the coplanar region is raised from 0.0005 inches to 0.025 inches relative to said base; and

    wherein forming the planar base and the coplanar region comprises applying a film to the energy-applying surface, wherein the surface defines the planar base and the film defines the raised coplanar region.

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