Baloon question

[Highspeed]

In our application, we are using something that looks like a baloon with two inputs, the volume is ~100 mL
currently this item is made using a silicon dispersion and a ptfe Master is put in this bath 15 times with pauses to get the correct 0.2mm thickness The whole process takes less than a minute of handwork but roughly a day of curing.
Now that the product is having some success our concern is that we will need 10k lots ...
Any tips & ideas of a better manufacturing process ?
Thanks,
HS

 

[rk12]

balloon may be fabricated by injection molding liquid silicone rubber. 0.2mm wall thickness is production capable

 

[rnd2]

Highspeed, it would help if you could elaborate a little more on what the product is required to do. Are you stuck with using only silicone?

 

[Highspeed]

This is an 5 month old topic and things have moved
Now we are molding this Item and will receive the first lot within days.

We are not really stuck with silicon but the device is medical and has to comply with cytotoxicity testing as per IEC 10993-x. with the current setting using the silicon dispersion it came through without any problem.
Cheers
HS

 

[gambro]

If what you are talking about is a collapsible, high-pressure Balloon Catheder, these are mostly injection molded and either made of PET or PA. For more info see

http://www.advpoly.com

I have also seen large, low-pressure Balloon Catheders made of thermoplastic Polyurethane (for example Bayer makes medical grade TPU for this purpose). These are usually blow molded.