It's there......
https://flexlinkllc.com/vending-machine-coffee-filter-rolls/
I haven't seen that before, don't know where that is. That's the kind of machine you would get if you were making custom tea blends in your kitchen and then packaging in your garage for small markets. If you want more production, buy more machines! I doubt you would see anything like that at Lipton and expect to keep the countries grocery store shelves stocked!!
While watching that video, this one was listed. it would be the next step up most likely;
I still don't think that Lipton has a lot of those in their plants either. It's more like a typical form and fill machine that is used to bag pack a lot of products. I worked in the contract packaging business and rebuilt, repaired and designed custom packaging machinery for several years early on in my career and held a patent in that industry, # 5311726. On a lot of machinery, things haven't changed dramatically over the years but just get more and more refined over time to make them faster and more efficient. These smaller machines that take the narrow width roll is one way. I have not seen any larger and faster machines, but from experience I can imagine a single, wider roll feeding a system to feed several machines at the same time by slitting the paper at a certain point into the necessary number of ribbons to feed the machines, depending on how they are positioned. These machines might have multiple filling funnels that allow it to match the surface speed of the paper. I can also see a tea company buying the paper is wider rolls to get a better price on it, and then convert and rewind into narrower rolls to meet their needs. They could even be printed with a logo using vegetable base inks along the way but that would just slow things down. I think the paper has to have some sort of treatment that allows it to be heat sealed, though. That could be blended into the fibers of the paper when it was milled I think or applied just prior to slitting and rewinding into the final roll size. One way to check is to take some of the tea bag paper and try heat sealing it with a monokote iron at full temperature and see what happens. The packaging business was pretty interesting and I wouldn't have minded staying in it with the right company, but I got kind of burned out by my former boss. That led the parent company that had bought us out a few years earlier to offer me a position in the printing business, and that worked out OK. I kind of miss them both.
Type at you later,
Dan McEntee