Ultrasonic Welder for thin LDPE? Or maker space that has an ultrasonic welder?

[YogaDadAZ]

I need to weld a thin film (0.007") of LDPE to a solid cylindrical piece of Polyproylene (PP) for a prototype part. The weld pattern will be an annular ring (O.D.=1.8", I.D.=1.5"-1.6") on each end of the cylinder. The joint has to be welded, no solvent or glues. The purpose of the weld is to create a water-tight seal (up to 100 p.s.i.).

I've seen inexpensive (~[imath]300), handheld ultrasonic welders advertised, but the horns on these models are very small and would require me to manually move the device around my prototype in order to create a continuous, welded seam. After that, the prices of ultrasonic welders jump to[/imath]1000 and much higher. Does anybody have any experience with these low-cost ultrasonic welders? I haven't found any maker spaces that have ultrasonic welders and I don't want to shell out $1500 just to make a few prototypes.

Any thoughts or recommendations would be greatly appreciated.

 

[Bluejets]

Your requirements outlined are specific to specialised equipment, not only the welder but the mechanism to hold the workpiece and move to required locations.
Suggest you contact a manufacturer.

...or use a "really good" o'ring and compression sleeve.

 

[YogaDadAZ]

Your requirements outlined are specific to specialised equipment, not only the welder but the mechanism to hold the workpiece and move to required locations.
Suggest you contact a manufacturer.

...or use a "really good" o'ring and compression sleeve.

Thanks. I've already built an o-ring configuration to prove viability and it worked. Now I'm trying to demonstrate a high volume manufacturing solution.