Glue part 2

The fact that I didn't know how much force it would take to get the tube of the bottle, was constantly on my mind so I did some more testing today. I took the luggage scale again and made a pulley system so I could easily pull with more force. The scale went 1,5 times around (which would be around 50kg force on the tube) when the rope broke again. I really wanted to know what it would take to get it of, so it was time for some brute force.

This is just the last part of the video, there where more than 10 hits preceded.

Finally the tube is off but was it the glue that gave up?

a layer of pet has been pulled off

No, probably not, looking at the bottle it looks like a layer of pet has been pulled off.

Difficult to see in the picture but there's a very thin (shiny) layer of pet still stuck on the glue.

So I still don't know how much force in kg it would take, but I know for sure that this glue bonds very well to pet, in fact it's stronger than pet. I'm definitely going to use this glue to make the drop away boosters...