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How to make Homemade Ice Pack Using Ziploc Bags

Ziploc bags are amazing and have so many uses. Sure, they are great for storing food, but did you know you can also use them to make your own ice pack? This life hack will really save you in a pinch. But before we get into that, let’s talk about the zip lock bag itself. Where did they come from?

In 1951, an inventor named Borge Madsen applied for a patent for a plastic slide fastener, which was the precursor of today’s familiar zip lock bag. His original design was slightly more complex than the current version, it had two “engaging areas” instead of the one commonly used today, and it looked more like a traditional zipper with a tab, except that it had no teeth and was made of plastic.

 
   

How to make Homemade Ice Pack Using Ziploc Bags

But it wouldn’t be for another decade that the leap in technology was brought to your local grocery stores and supermarkets. The now-familiar Ziploc® consumer brand was launched and widely marketed in 1968. It took a few years for the product to really catch on, but by the early 1970s, the Ziploc® brand bag had become immensely popular and was being used by consumers for everything from storing sandwiches for school lunches to transporting goldfish home from the pet store.

The Ziploc bag ice pack hack is really simple. You simply wet a kitchen sponge, place it in a Ziploc bag, and place it in the freezer.

I tried this life hack using two different kinds of sponges. The first attempt sort of worked, but it wasn’t as good as the second one. Here are the sponges not to use.

How to make Homemade Ice Pack Using Ziploc Bags

The kind that worked is with this kind of surface. This is the texture you want in your sponge (see photo below). This kind of sponge is really inexpensive as well. I picked up a package of 4 for $2.99 at my local grocery store. I think they are called compressed cellulose sponges.

 
   

How to make Homemade Ice Pack Using Ziploc Bags

 

How to make Homemade Ice Pack Using Ziploc Bags

You can also use these in lunchboxes to keep your food cool.

How to make Homemade Ice Pack Using Ziploc Bags

There is another hack out there that ditches the kitchen sponge and just uses the Ziploc baggie. I did try this method, but to be honest, I found it a little too cold for my taste. But it did work. Here is what you need to do.

Pour 4 cups of water and 2 cups of rubbing alcohol into a Ziploc bag. Squeeze the air out of the bag and then seal it. Next, place the sealed Ziploc bag into a second (empty) Ziploc bag. Now squeeze any air out of the second bag. This second bag is meant to provide a barrier in case the first bag leaks. Now place it in your freezer overnight.

Before using it, you want to make sure that it’s cold and that the mixture is the right consistency.  It should also be congealed or slightly stiff but not rigid.

If the ice pack is too stiff or rigid, you may add a little more rubbing alcohol; if it is too “watery,” you may add more water. This is because rubbing alcohol keeps water from freezing and vice versa, depending upon the solution used. You will need to leave it in the freezer longer, regardless.

Once the ice pack consistency is to your liking, put it in a clean pillowcase and then place it on the needed body part. I will say that even with the pillowcase as a barrier to protect my skin from the ice pack, it was still a little too cold for my liking.

 

 
   

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How to make Homemade Ice Pack Using Ziploc Bags

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