UV-Cured Elastomer Material

for the given post, this is a well-formulated and thought about answer. You can use a GA for this.

Thanks.

Hi Lynlynch,

Thanks for all your answer.

1. "Our current process is to cure it to 4j/cm2" Does this give total cure?

- Yes. At 4j/cm2, the material is totally cured.

- My question actually is not if the material is cured or not.

- Its just a matter of curiosity, of "What If?".

- I have done the actual testing but cannot see the difference visually.

- I have no instruments to check for the material property.

2. I have directed this question to the material supplier but no reply till now, thus asking some UV expert here if they have some ideas.

3. "yes, the exposure is 8j/cm2." Another answer below says It will remain at 4j/cm2?

A bit confused..

Anyway, Thanks for all the answers.

vyi

LynLynch's comments are correct. Best way to solve any issue is to work with the material supplier as they should know the properties of their material better than anyone else.

Also you need to ask yourself why you want to double the dosage.

Are you experiencing undercure? If the material you are trying to cure is a thick deposit then increasing the dosage by passing through twice may not help. To increase the depth of cure you would need to increase the Intesnity of your UV system.

When working with UV cured inks or resins both Intensity (W/cm2) and Energy (J/cm2) are improtant.

Also by giving the material an extra dosage you may cause overcure which will lock up the surface making it difficult to bond any further layers to it.

Hi Yvi,

One is sure, it will stay 4j/cm2, just the time will be double or more long. Ask your suppliers and get all info about what you would like to obtain as final results. The resin define the performances. Good luck, Gil.