Hi guys,
I am trying to prepare composite laminates with resin infusion process. I am using the resin IN2 coupled with slow hardener. Unfortunately, I got many bubblea in two laminates and I do not understand why. I degas the resin+hardener compound before infusion. Here a quick description of the procedure I follow (that is the same of the video you posted on YouTube. 
1) the resin flows through the fibers 
2) I lock the inlet pipe (resin side)
3) I close the pipe outlet (catch pot side) after few minutes. 
I am almost sure that I have no air losses in my bag because I did different verifications. The bubbles appears between point 2 and 3. Do I wait too much between point 2 and 3?  Could be the air trapped in the pipe between the clamp and the resin at the beginning of the process? 
I am attaching some figure of the laminates at the end of the process. Thank you in advance and congratulations for this important forum.

Raffaele