Paint spray can filling machine - GIF

**Altair** · Jun 16, 2020, 09:51 PM

Paint spray can filling machine.

Previously:

Superhydrophobic spray - GIF
Multi spray paint can rig - GIF
Paint can spout from tape - GIF
Ease of squeeze machine for tube of paint - GIF
Manual paint can closer - GIF

**Ralphxyz** · Jun 17, 2020, 07:27 PM

Certainly not a production plant.

**Toolmaker51** · Jun 17, 2020, 10:10 PM

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.

**Tooler2** · Jun 18, 2020, 01:49 AM

Is the can being filled and pressurized in this cabinet?

**Toolmaker51** · Jun 18, 2020, 06:54 AM

Originally Posted by Tooler2

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.

**Tooler2** · Jun 18, 2020, 07:50 AM

what propellant would be used and is it mixed with the paint during the injection (filling)?

**Toolmaker51** · Jun 18, 2020, 08:56 AM

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.

**Ralphxyz** · Jun 18, 2020, 11:33 AM

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