Plastics welding method and apparatus
OwnerHenry William LEEinventor
Life of this patent
Estimating the term…
Abstract
The invention provides a tool 10 of the invention for welding a PET gland 12 onto a PET bottle 14 for the fitment of a dispensing tap. The tool 10 is generically indicated as ultrasonic horn or sonotrode in the figure. The ultrasonic horn has a tapered serrated portion 16 which has a lead-in taper section 18 to initiate the melt of the plastics to be welded, and a knife section 20 (when required), being the cutting zone thereof, which in use cuts open a sealed spigot 22 so that the horn can enter into the spigot 24 for the welding operation.
Claims19
A tapered ultrasonic welding tool or horn designed to weld a plastics material gland onto a spigot of a plastics material to which said gland can be welded, said tool including a serrated tapered portion which, in use, is urged into the spigot opening from the outside and melts the plastic materials of the spigot and the gland at the point of contact between the spigot, the gland, and the welding tool, so that the gland is welded to the outside of the spigot.
A method for welding a plastics material gland onto a spigot of a plastics material, said method including urging a welding tool including a serrated tapered portion into the spigot opening and melting the plastics materials of the spigot and the gland at the point of contact between the spigot and the welding tool, so that the gland is welded to the outside of the spigot.
(canceled)
Dependencies are inferred from the claim text.