Subject: | |
From: | |
Reply To: | |
Date: | Thu, 22 Jun 2017 06:14:34 +0700 |
Content-Type: | text/plain |
Parts/Attachments: |
|
|
Hello Bob
Its down to the silicone resin used. We use a certain silicone resin for
our masking boots that does not leach out any harmful contaminants in
normal processing. You also have to be careful how you clean the boots
after. Attacking them with solvents can cause some leaching.
Drop me a line if you need further info on this.
Best Regards
Dr Lee Hitchens
SCH Technologies is a Division of SCH Services Limited
Mob: +66 (95) 418 5931
www.conformalcoating.co.uk
Skype: leehitchens
TECHNICAL SUPPORT SERVICE
SCH Services Ltd offers a Technical Support Helpline to help address all issues relating to reliability. This includes contamination testing, cleanliness and cleaning issues, plus any coating related questions.
Please contact us via email or telephone: [log in to unmask] & +44 (0)1226 249019 (office hours & answerphone)
The opinions expressed in this e-mail are strictly those of the sender and not of SCH Services Limited. This communication may contain information which is confidential and may also be privileged. It is for the exclusive use of the intended recipient(s). Unauthorised use, copying or disclosure of any of it may be unlawful. If you are not the intended recipient(s) please note that any distribution, copying or use of this communication or the information in it is strictly prohibited. If you have received this communication in error please notify us by e-mail or by telephone (+44 (0)1226 249019) and then delete the e-mail and any copies of it. Virus Warning - Although steps have been taken to ensure that all email and attachments are virus-free, we cannot guarantee nor be held liable.
On 21/06/2017 20:55, Bob Wettermann wrote:
> All:
>
> After the last discussion of masking tape I happened to be involved soon
> thereafter in a time study of using re-usable "boots"/"caps"/"plugs" to
> protect components in the conformal coating process.
>
> Like most who perform coating we spend an AWFUL lot of time masking and
> demasking in these projects and are always looking for the best method.
>
> We have used the silicone-based boots and have been successful on larger
> repeated projects to use them 250-300X. They are fine for spray coating for
> medium density boards.
>
> The time to mask and demask ,depending on the complexity of the part and
> coating being applied as well as the application method determines whether
> or not the boots make sense. We are partial to the silicone-based boots
> (though with the caveat described in the previous posting about trying to
> get silicone out of the shop-especially for medical applications).
>
> I am wondering if there have been any favorite materials for these boots
> amongst the coating community other than silicone? If so how do you find
> the boot matches your process and actually derives the time-savings benefit.
>
> Thanks
>
|
|
|