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An idea for recycling HDPE and the mysteries of steam!

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vtsteam:
In their video about 11 things they wished they knew earlier, they use a panini press with two layers of teflon sheet to fairly quickly melt those bottle caps because it's direct heat from both directions, above and below. They build up a hot mass by adding more material and closing the press again, eventually fold it out of there. They are handling a pretty big chunk of taffy like material (silicone oven gloves). Maybe then you could put that into a mold. You're not adding little hot bits at a time to a mold that way. Seems quicker. The mallet thing was an early attempt maybe 5 years before.

awemawson:
One of the stages in processing natural rubber is to pass it back and forth between heated rollers to make it a homogeneous mass excluding air - I wonder if something similar would work for HDPE etc once initially warmed?

vtsteam:
Andrew, I think that would work. In a way, the videos showing those two brothers kneading the molten plastic is essentially the same thing. A hot rolling pin on a heated platten? Use a hot air gun to warm them up?

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