2006-09-02 13:58:03 · 22 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
when it stops rattling, you've shaken it up completely. It may take 2 or 3 minutes, and as you use it, keep shaking.
2006-09-02 14:03:28 · answer #1 · answered by greg j. 6 · 2⤊ 2⤋
Every aerosol can (spray paint can) has two important elements: the product and the propellant. The product in a can of spray paint is simply the paint itself. The propellant, however, is the material that shoots it out of the can.
The propellant is a liquefied gas. At room temperature it's a gas, but it's forced into the can at a high pressure, causing it to liquefy. Pressing down on the can nozzle releases that pressure, and some of the propellant reverts to gas. This shoots the paint out. HowStuffWorks offers an excellent diagram of the process.
So where does that rattling sound come from? A metal ball bearing helps mix, or "agitate," the product and propellant. When the two liquids are mixed equally, the paint shoots out of the can nozzle in a fine mist, rather than in clumps.
2006-09-02 14:06:14 · answer #2 · answered by Amit V 1 · 1⤊ 0⤋
The ball is used to mix the ingredients so that the spray that comes out is uniform in droplet composition.
A secondary reason is that there may be clumps in the mixture and the ball helps to break up these clumps and prevent the spray nozzle from clogging up.
2006-09-02 14:04:20 · answer #3 · answered by random.acts 3 · 0⤊ 0⤋
It is how the Paint Troll stirs the paint inside the can
2006-09-02 14:14:27 · answer #4 · answered by dpjejj 3 · 0⤊ 0⤋
That ball was purposely put for better mixing the paint before using. Remember to shake well before use. Good luck!
2006-09-02 14:02:44 · answer #5 · answered by Peter L 2 · 3⤊ 0⤋
It stirs up the paint inside
2006-09-02 14:02:01 · answer #6 · answered by teef_au 6 · 0⤊ 0⤋
To stir up the paint
2006-09-02 14:03:16 · answer #7 · answered by pmdan00 3 · 2⤊ 0⤋
Because it sounds cool and you can kind of accompany the music on the radio. Also to help disperse the tint and colour with the paint
2006-09-02 14:07:52 · answer #8 · answered by Anonymous · 0⤊ 3⤋
the paint is thick, the ball is to break the paint and make it more fluid to pass through the jet pin hole
2006-09-02 14:09:58 · answer #9 · answered by class4 5 · 0⤊ 0⤋
To stir the paint!
2006-09-02 14:04:04 · answer #10 · answered by suequek 5 · 2⤊ 0⤋