I've also seen a glue-less paper binding trick where two pieces of paper are finely crimped together with some high pressure tool in alternating v^v^v^ patterns, actually making tiny tears in the paper. Does anyone know what kind of tool does that?
“By irradiating the paper with a CO laser, we create refusible, sugar-like
reaction products that we use instead of the synthetic materials or adhesives
that would otherwise be required to seal the paper by the heat sealing
process. In this way, we are essentially producing our own adhesive"
What a cool read? I didn't expect lasers to be the answer. I use rubber bands all the time to hold paper wrap together. I thought the answer would be rubber bands or strings (analog version).
Close where I am living (Tuscany) there is a small industrial district focused on adesive paper production.
I had sent this link to a friend of mine that is working as plant manager for one of those.
I thought that this was going to be illustrations of the marvelous ways that the Japanese wrap and secure gifts without using any tape. When I was in Japan years ago I would tell them that a purchase was a gift just to see how they wrapped things. I might even still have something that I never unwrapped because the finished thing was a work of art in itself.
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It's a bit hard to search for, because they make one that punches a hole too (shows up in the video).
In US, you can find it on Amazon for 15-20 bucks.
The welding utilizes the existing ligand glue that holds the wood fibers together, as it's essentially a natural composite.
https://www.youtube.com/watch?v=X0k04hjdYuQ