By Andrey Revyakin - 1/14/2018 11:43:40 PM
Can you comment on which of your pumps would support continous-on operation overnight without overheating?
When I do vaccum bagging, I frequently get pinhole leaks from connectors etc which are difficult to debug. My parts are mostly long tubes of special shapes. All reagents come from you, except that, as a bag, I use thick long polypropylene sleeves which I connect with your red standard disk-connector, and seal both ends with a hot wire. The leaks appear to be around the connector, and are hard to debug. So I just set my oil-free pump on continous pumping. It has a feedback, so it switches on/off every 3 seconds to retain the vacuum, which causes overheating, and requires me to set-up a separate cooling fan. I am now considering to get a separate pump, and I am wondering how it would behave if left on cotinously for 12-16 hrs at a time.
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By cumberdale - 2/15/2018 1:17:48 PM
I have experimented using a heat sealer, but with mixed results. It is hard finding the optimal combination of sealing duration and sealing temperature. I suspect VB160 Vacuum Bagging Film is not that easy to seal as it consists of multiple layers. Additionally Nylon absorbs relatively high amounts of water, compared to other plastics; this water could maybe interfere with the sealing process.
I googled around a bit and not many seem to be using heat sealers for vacuum bags, but there are some. On paper it seems like a good idea, as the potential for time saving is huge, compared to the usage of tacky tape.
Has anyone else expermented with a heat sealer?
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