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Thread: Paint spray can filling machine - GIF

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    Altair's Avatar
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    Paint spray can filling machine - GIF


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    mwmkravchenko (06-18-2020)

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    Ralphxyz's Tools
    Certainly not a production plant.

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    Toolmaker51's Tools
    No, not production as in volume. The process evolved from digital color matching when soccer mom Sally wanted to match a sweater or something.
    We did repairs/ rebuilds on all kinds of printing equipment. Instead of full repaint, a cleaned panel was taken to local industrial paint shop, color matched and needed quantity was loaded into common rattle cans, with all the expected formulation on the label, type of gloss and a spot of that paint, not just a printed color.
    Finished appearance was good as new, provided good can spraying techniques were used. Sometimes they supplied paint that would texture itself; hammer-tone, speckle, wrinkle, or that like spraying droplets of drywall mud.
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    Toolmaker51
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    Is the can being filled and pressurized in this cabinet?

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    Toolmaker51's Tools
    Quote Originally Posted by Tooler2 View Post
    Is the can being filled and pressurized in this cabinet?
    Yes. Toward end of clip, it is weighed. I'm certain the filling machine is regulated for pressure, the weight just makes sure reservoir hasn't run out. Like packaging in general, that would have a specified range or minimum, and 'topped off' need be.
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    what propellant would be used and is it mixed with the paint during the injection (filling)?

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    Toolmaker51's Tools
    Propellant? Don't know, it would have to inert, so paint doesn't skin over in the can and clog nozzle. The ozone regulations have narrowed those choices. What ever gas used, seems likely choice to pressurize the machine too. Here is a guess. Different finishes might tolerate different gases, so that being supplied through interchangeable cylinders be a plus, balancing quality with economy.
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    Ralphxyz's Tools
    The propellant question is interesting, CO2 was common but I do not believe commonly used any more, but for a custom "one of shop" they might still use it.

    Butane was also used, it was fun to hold a lighter in front of the can and light the spray.

    Ralph


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