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How to keep a cooler bag cold? | Tote Bag Academy

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You can do a few things before you get ready to fill your ice cooler bag for your next camping trip or day at the park to guarantee that your ice, and ultimately, your food, stays as cold as possible for as long as possible.

When using a cool bag, one of the most difficult problems is preventing the ice from melting too rapidly. This may cause your food to become mushy and unhealthy, while also causing your drinks to warm up. And what could possibly be worse than lukewarm beer? To extend the time your cooling capacity lasts, you only need a few common home goods and some ingenious packaging tricks.

How Does Cooler Bags Work?

Most lunch bags that are insulated come with many layers of insulation. In most cases, they consist of three layers: an outside layer, an inner layer, and a middle layer that provides insulation. The center layer is of the utmost significance since, in the absence of this component, a lunch bag would be no different than a regular lunch box.

To prevent energy loss, thermoses and insulated lunch boxes rely on a vacuum created between the outer layer and the inner layer of the container. On the other hand, insulated lunch bags use a dense foam core layer to keep food and drinks at the appropriate temperature. The insulation provided by the foam is significantly improved by increasing its thickness and density.

The foam layer stops heat from leaking to the outer layer and also inhibits the cold or heat from the environment from penetrating the bag and reaching its contents. It is possible that you may observe that the exterior of insulated lunch bags does not heat up when loaded with warm goods. This is because the heat is prevented from dispersing in the surroundings, which leads to this observation. (The outside layer of the majority of lunch bags is often constructed out of non-woven fabric, vinyl, or thick cloth.)

Many insulated lunch bags come with an inside layer or lining that is composed of foil, thick vinyl, or plastic that is watertight and heat-reflecting. This serves as an additional layer of protection for the contents of the lunch bag.

While cooler bags are very convenient, they’re not exactly capable of doing magic. Depending on the model you have, hot food should remain warm for about two to four hours, while cold food will keep its cool for about three to six hours at best. This primarily depends on the materials used during production.

Avoid Direct Sunlight

If at all possible, store your luggage where it will be protected from direct sunshine and shade. However, if you can maintain the bag at a colder temperature for a longer period, the ice inside will be usable for longer. This obviously depends on where you are. Be sure to keep the zip-lock tight to prevent warm air from escaping and allow cold air to enter. Because both our insulated cooler backpacks and cool waterproof bags are outfitted with ThermalLock insulation, this is an essential step in maximizing the usefulness of your cool bag and figuring out how to keep it cold.

Put these best practices for maintaining the temperature of a cooler bag into practice. Your favorite foods and beverages should be able to maintain their high level of freshness for a significantly longer period of time. On our website, you can discover instructions that will help you select the Red Original waterproof cool bag that is most suited for your needs.

Keep it Organized

Warm air will enter your cooler whenever you open and close the lid, hastening the process by which the ice melts. You may reduce the length of time the lid is left open by organizing the contents of your cooler such that the goods you will require most frequently are located on one side. If you want to find what you need without wasting time digging around, you should organize your cooler so that each opening is as productive as possible.

Use Big Ice Blocks

Since we just mentioned keeping it organized is helpful to keep cool bags cold for a while, here is another tip for the interior. Compared to tiny ice cubes, larger ice blocks have a lesser amount of surface area exposed to the warmer air outside, which is one of the benefits of employing larger ice blocks. Because of this, bigger ice blocks melt at a far slower pace than ice that has been cubed. You may simply build your own ice blocks at home by utilizing a milk carton that has been cleaned and is empty as a mold. After making sure there is enough area for the water to expand, fill the carton with water and then freeze it. After the contents have been frozen, remove the carton and put it in your refrigerator. Despite their size, they have a far longer lifespan and perform their functions more efficiently.

The ratio of Ice to Contents

When it comes to keeping your cooler bag cold, having more ice means the ice will stay frozen for longer. Because of this, if you want the contents of your cool bag to remain cold for a longer period of time, you should choose a cooler bag with a greater capacity so that you may pack it with more ice. If you want to have ice for your beverages, we recommend using twice as much ice as the amount of liquid in the container, but if you just want to keep the food at your picnic cold throughout the day, a few cool blocks will do the trick.

Additional Aluminum Foil Layer

Keeping the heat out is the single most critical thing you can do to keep the contents in your cooler bag cold. Aluminium foil, which helps reflect heat and light that would otherwise quickly melt your ice, may be used to line the interior of your cooler, which is an excellent approach to accomplish this goal. You might also use thermal bubble wrap to assist in preventing hot air from escaping and allowing cool air to enter. You may also try placing a layer on top of your cool bag to assist it reflect any other UV rays that may be present. 

Keeping the heat out is the single most critical thing you can do to keep the contents in your cooler bag cold. Aluminium foil, which helps reflect heat and light that would otherwise quickly melt your ice, may be used to line the interior of your cooler, which is an excellent approach to accomplish this goal. You might also use thermal bubble wrap to assist in preventing hot air from escaping and allowing cool air to enter. You may also try placing a layer on top of your cooler to assist it in reflecting any additional UV rays that may be present.

Pre-Chill Your Cooler Bag

If you want your ice to stay colder for a longer period of time, one of the finest things you can do is to chill your cooler before you put fresh ice in it. You may do this by placing ice in the cooler bag a few hours or even a day before the event, and then letting it cold to the maximum extent feasible. When you are ready to get going, doing this will assist the new ice last for a longer period of time. 

You may also freeze water bottles or non-carbonated drinks to use as extra cooling things that will assist in keeping your ice for longer. This will keep your ice from melting as quickly. In addition to this, before you put anything in the cool bag, ensure that everything you intend to put in it has already been adequately cooled. Instead of putting warm drinks or food at room temperature into the cooler, try freezing or chilling as much as you can beforehand.

Wrap a Wet Towel Around Your Cooler Bag

Wrap the cooler with a damp towel of a light color, and keep it tucked away in the shade as much as possible. The water will start to evaporate off the towel as soon as the breeze blows over it. The towel will get chillier as the water evaporates and transforms into vapor. This will assist in maintaining a lower temperature in the cooler bags allowing the ice to stay frozen even longer.

Camp Hack: Burry Your Cooler Bag

If you are going to be away from home for several days, you might want to consider burying your cool bag in the ground. Even if it might not make sense at first, the fact that the soil is chilly will make it possible to keep the same temperature for a longer. Make sure that you only bury it three-quarters of the way, and pick a location with some shade.

Drain the Melted Ice Water

Despite what you would believe, storing melted water in the refrigerator is not the most logical thing to do. The presence of water makes it far more probable that heat will be transferred by convection, which will cause the ice to melt more quickly. Your ice will melt gradually if you drain the water as it gathers on the surface of the ice.

Check Our Best-Selling Cool Bags 

Tote Bag Factory is pleased to provide some of the best-insulated lunch bags available at the lowest possible costs. We've got you covered whether you're looking for a lunch bag for your kid, for yourself, or as a promotional item. Have a look at what's been selling best in this particular grouping.

Promo Wholesale Lunch Cooler Bag

This high-quality insulated lunch bag is available at a wholesale price, making it an ideal item to use as a giveaway or prop at promotional events. This promotional bag's outside layer is constructed of heavy-duty 600D polyester, and its reflective inner layer ensures that it will last a long time and operate to its full potential. Additionally, it features a front pocket with a zipper, a web handle in black, and a sizable imprint space. There is a choice between five different hues.


6-Can Cooler Lunch Bag

There is a good reason why this durable square lunch bag has been a best-seller ever since it was first introduced to the market. It is spacious enough to hold six drink cans, looks fashionable, and is quite robust. When it is not in use, it can be quickly folded up, stowed away in a purse or backpack, and is equipped with a convenient side pocket.

Economical Lunch Cooler Bag

This huge insulated lunch bag has dimensions of 6 inches wide by 12 inches high by 5 inches deep, making it one of the finest solutions for several users or for storing and maintaining the freshness of various foods while on the move. A poly-web handle, a hook-and-loop fastening method, and a wide imprint space are all included in the package. The thick 420D nylon is sturdy, resistant to water, and easy to spot and clean in certain areas. Discover the key distinctions between water resistance and waterproofness by reading this article.


Cooler Bag with Side Pockets

Picnics, day hikes, and other quick excursions are perfect opportunities to use this robust insulation lunch bag. The exterior layer of this bag is constructed using heavy-duty 600D polyester, while the interior layer is constructed using thick vinyl material. For more storage space, it has a front pocket in addition to the two side pockets that are secured with zippers.

Even if you have to open this bag several times before lunch break, the top zippered closure mechanism makes this bag more successful at maintaining heat or keeping items cold inside. This is true even if you have to access the bag's contents. Because of its shape, it also works very well as a cooler bag for holding cold beverages.