How to make a bag fridge do it yourself

Ergonomic cooler bag, made by hand, will be much more profitable both economically and in functional terms than bought in a store or on the market, as a branded cool bag, as a rule, is expensive, and it is unlikely that anyone will be responsible for the quality of cheap analogues.

Depending on the destination, a cooler with your own hands can be designed and applied for the following purposes:

1. To transport products in the trunk of the car, in the form of a compact bag.
2. For trips to the shops - package cooler.
3. For carrying medical drugs through the shoulder, or a backpack cooler.

The main components that need

Before you make a bag of the refrigerator with your own hands, you must be equipped with the following elements:

1. Bag, you can sports, i.e. different in size, but not too cumbersome. The bag should be functional and comfortable, preferably with a zipper-buckle.

2. Heat insulation. The material for the insulation of the cooler bag is most often used as foiled polyethylene (also called isolon, thermal insulation or polyizol) with a thickness of at least 5-10 mm, which can be purchased at any building supermarket. His footage is selected depending on the size of the bag, as a rule, no more than 1-1.5 m. It is also advisable to purchase foil-coated polyethylene with double-sided foil (so as not to let out the cold and keep the heat out).

3. Scotch-foil, or wide double-sided tape and ordinary duct tape;
4. Accumulators of cold factory origin (2-4 pcs.). Analogues of cold accumulators can be either an ordinary medical heating pad or a pair of plastic bottles with saline inside, which will keep the cold and transfer it to products or medicines.

How does the cooler bag work?

Phenomenon cooler bag work It is based on the preservation of temperature, which inside was set by the source materials - cold accumulators (containers with ice salt solution). Thermal insulation material, foil and frozen brine make it possible to maintain a constant temperature inside the thermal box.

The cooler bag functions just like a regular thermos, just the opposite. Due to the good thermal insulation created inside, which is ensured by the materials used for its manufacture, the cooled products or medicines remain in excellent condition for 2-3 hours. The focus is elementary - the internal thermo-box of the bag made of air-tight, glued foamed polyethylene, covered with foil, perfectly reflects and saves the desired temperature in it.

Phased work

Having understood the purpose of the portable cooler bag, its components and functionality, it is quite possible for your needs to create such an easy-to-use device with your own hands.

So, any thermo-box, be it a small cooler bag for drugs (for example, for injections),or a large backpack-cooler for foodstuffs or beverages for independent production consists of the following work steps:

1. Cutting double-sided foil polyethylene in the form of a solid cross, which, depending on the size of the bag, will proportionally have different sides. The bottom of the bag will be its wide central part, and the long sides will be the sidewalls (walls) of the bag.
2. Gluing with the help of the usual wide adhesive tape of the sides of the cross together, so that the box is obtained. In this case, the tighter the corners of the box stick together, the better will be the bag insulation.
3. Placing the foiled box in the bag is a cover and gluing it inside with double-sided tape.
4. Creating a cover for the box, which is made separately, because foiled polyethylene tends to bend badly. It can be sheathed outside with dense material, and it should only tightly cover the box.
5. Manufacture of cold batteries. It can be either finished products that can be purchased in a store, or home-made salt (or alcohol solutions).These solutions must be poured into containers, as a rule, half-liter plastic bottles or heating pads, and frozen in a freezer. For half a liter of ordinary tap water will require 3 tbsp. l salt. Be sure to leave some air inside the container, since the ice during thawing tends to expand. The process of freezing such a mixture takes about a day.

The whole process of making a refrigerator bag with your own hands takes about 20-30 minutes. The medical cooler bag is additionally equipped inside with a temperature sensor that monitors the situation, and the emphasis in creating it is placed on reliable cold elements, which should have a quick action and bring the bag to the ready state instantly, maintaining at the right temperature for the drugs for at least 8-10 hours.

Useful tips in the manufacture and use of a homemade cooler bag

A fridge made by yourself is a very useful and necessary thing in the house, especially if you like to go out with your whole family for picnics or for a long time to shop at grocery stores when the purchased product requires coolness and heat protection (especially in summer).

When creating a refrigerator bag with your own hands, instead of scotch tape, you can use brackets, which, with the help of a stapler, also reliably seal the box. For a more reliable construction, the thermal insulation of the box can be made double, i.e. A foiled polyethylene box (necessarily a foil inside) will need to be put in a cardboard box, and packed outside with a second layer of polyethylene, and then the resulting construction should be placed in a travel bag.

The cold elements are placed in the box immediately before packing the products inside, every 10-15 cm. At the same time, it is advisable to freeze the products that can be frozen for additional cold inside the bag. Everything that is packed in a bag must be wrapped in a newspaper or wrapping paper and packed tightly inside the bag, without extra space. Top wrapped products are covered with paper and a towel.

For medical professionals, a medical fridge bag made with their own hands will also become an indispensable assistant in first aid.

As a rule, the volume of such bags is small and has pockets inside of different sizes, which tightly contain containers with medicines and other containers that help reduce the risk of shaking during road transport of materials being transported.

In addition, it is worth remembering that the medical bag of the refrigerator must necessarily be subjected to inside and outside disinfection - treatment with laundry detergent solution with the addition of 3% hydrogen peroxide.

The main rule, preserving cold inside the bag for a long time, is the smallest opening of it (i.e. less looking inside, only in case of urgent need) and tight closing of the lid. So, a cooler bag with high-quality cold batteries can, on average, keep the required temperature inside for up to 12-18 hours.