How to Inflate a Helium Balloon With an Inner Balloon

Written by shelley moore
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Picture this for a birthday decoration, a wedding or other fun event: a clear outer balloon with another balloon inside in the shape of a heart, a dolphin, a bride and groom, a puppy, a kitten or some other item specific to the special occasion. With a helium tank, you can create an interesting and unexpected decoration that will last for two or three weeks. You can buy balloons separately to make your own creation or buy them prepackaged one inside the other.

Skill level:
Moderate

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Things you need

  • Prepackaged balloons or separate balloons
  • Helium tank
  • Chopstick or straw

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Instructions

    Inflating Prepackaged Double Balloons

  1. 1

    Locate the valve for the outer balloon, which will be a different colour than the valve for the inner balloon (it may be labelled "A"). Attach the valve to the helium tank nozzle and inflate the outer balloon slightly, just enough so you can fully inflate the inner balloon; remove the valve. These valves prevent the balloons from deflating so you don't have to tie them off.

  2. 2

    Attach the valve for the inner (shaped) balloon to the helium tank and inflate the balloon to the appropriate size. Do not overinflate. Remove the valve from the tank.

  3. 3

    Move the inner balloon if necessary so it's in the middle of the outer balloon and standing up straight.

  4. 4

    Reattach the outer balloon valve to the helium tank and inflate this balloon until it's completely wrinkle-free.

  5. 5

    If the helium in the outer balloon has enough pressure to shrink the inner balloon, the inner balloon needs more helium. Switch valves and add a small amount of helium to the inner balloon.

    Inflating Single Balloons

  1. 1

    Roll the small balloon, which will be the inner balloon, into a line so you can insert it into the large balloon. Slip a chopstick or straw into the neck of the small balloon and insert this balloon into the larger one. Line up the necks of the two balloons and remove the chopstick or straw.

  2. 2

    Slide both balloon necks over the helium tank nozzle and inflate until the inner balloon is full. If you're using a Mylar balloon for the inner balloon, it will have a valve; you can fill the balloon by attaching the valve to the helium tank nozzle.

  3. 3

    Tie off the neck of the inner balloon and push the knot inside the larger balloon. If the inner balloon has a valve, you can skip this step.

  4. 4

    Place the neck of the outer balloon over the helium tank nozzle and inflate until all wrinkles are gone. Remove and tie off the neck of the outer balloon.

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