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Question:

what can I do to control the toothpaste for a one way flow to the tube exit orifice?

Have you ever noticed it becomed increasingly difficult to stop unwanted back flow of paste towards the sealed end of the plastic tube. Unlike the earlier metallic tubes which could be rolled up from the bottom and be self retaining, the plastic tubes cannot be wound up into a permanent situation but always unroll to a flat state. I have ideas for a simple solution involving no external gadgetry to fiddle around with, maybe you have ideas too?? Keep it simple. Thanks

Answer:

You know, if you found the answer to this you could win a nobel prize.
use a clip that is used for closing off chip bags you just stick that on the end. then as you use the toothpaste you can push the clip up thus stopping the toothpaste from flowing backwards into the end of the tube. and pushing the toothpaste up you. just remember to clip the clip when you do this.
use a rolling pin to squeez the stuff out...and there is a gadget on the market that looks like 2 fingers, you slip the bottom of the tube between the 2 fingers and just turn up so that the tube rolls around and over the fingers and the paste doesn't backflow..got he idea?..but you can always by toothpast in a pump

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