plastic/rubber
Why are pieces of plastic melted and mixed together to become a whole?
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I don't know if you can understand the question stated in this way.

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Regardless of whether it is virgin plastic or recycled plastic, most of them are plastic pellets when they leave the factory. Put these small plastic pellets into a molding machine to heat and melt them, and they will become a large piece of plastic after cooling. What is the principle?
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  • 1Flooranonymity
  • 2021-08-18 10:25
Surface tension (surface free energy) tends to minimize the outer surface area of ​​the fluid.