Surface area overlap for Painted aluminum to felt for an airtight seal
Hello everyone. I have a current project that I'm working on where we have a frame that we put glass in using adhesive. Immediately after the glass is inserted we use a vacuum to pull the glass toward the back of the frame to squish the adhesive to widen its surface area. The problem is that we changed some hardware on a different part of the frame and can't put the frames full surface area on the vacuum table anymore. I'm trying to find information about surface overlaps for airtight seals and am coming up short. I don't have the specs for the flatness of the aluminum, but it is extruded so it will be nearly perfect. The other surface is covered in felt
Here is an image. The current design shown in the model is an overlap of 0.07718 in, making the overlap surface area 3.7046 in2. The goal of this is to make the least amount of overlap while making sure the seal will hold. I want to shorten the the overlap because of fatigue on black part (table). The Gray part is the frame. If I had to estimate the pressure of the vacuum i would say around 12 lbs to be on the safe side.
If anyone can get me pointed in the right direction to find information about this type of thing that would be great
Submitted May 24, 2017 at 10:51AM by keizzer
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