Roll on deoderant balls

[chaving]

Can any body help me with the manufacturing method for producing roll on deoderant balls.

I found some information that said they were blow moulded. If this is the case how are the parison scars and split-lines removed.

Any information on process, tooling, secondary operations and part tolerances would be helpfull.

Many thanks

 

[wljohnson]

I don't know whether the balls on deodorant bottles are blow molded or not. However, the part/fusion lines could be removed by centerless grinding. If the balls can be solid, the entire ball could probably be made by centerless grinding. Check out website

http://www.glebar.com

who specialize in this process. I am sure there must be others as well.
wlj

 

[1james]

I don't know a lot on this but we use roll on deoderant balls that are hollow. Blow molded from PP. Tolerance can vary but typically can hold +/-0.002" diameter. I don't know the process exactly but there is a step to provide a smooth finish (possibly a tumbling machine with a particular grit on the wheels to smooth the finish). Hope it helps. Here is a question, what sources have you found for roll-on balls? I was asked this today and have only 1-2 references.

 

[chaving]

There are very few compaies actualy doing it here, it seems to be a bit of a licensed monopoly. However the info you gave me was pretty correct. Thanks for your reply.

Chaving

 

[bryand]

If its any help, the worlds largest manufacturer (according to their web site) of Roll-on balls is Euro-Matic , check out

http://www.euro-matic.com/rollon.html

Regards Bryan Deacon
Ticona UK Limited

http://www.ticona.com