How Long Do Thermal Bags Keep Food Cold?

Views: 1339     Author: Site Editor     Publish Time: 2021-03-25      Origin: Site

You likely bring a lunch to office or school every day, so it’s important that all the food inside your lunch bag stays nice and cool. After all, who wants to take a bite of lukewarm yogurt or find a rotten ham sandwich waiting inside? Gross. If you have a long commute or a kid who always forgets to take their lunch out of their backpack, take note! You will need a thermal bag. There are enough insulation materials to keep food hot and cold for up to three hours at a time. The thermos lunch bag can also be completely recycled and made of waterproof material to increase convenience. Here are some questions about thermal cooler bags.



1. How long can the insulation bag keep food cool?

Some people rely on insulated bags to keep foods hot or cold. These bags alone may last for two hours or less, because this is the critical point where bacteria may grow to dangerous and disease-causing levels.


Also, how long can you keep the meat in a cooler bag? Temperature. As long as the internal temperature is kept below 40 degrees Fahrenheit, perishable food stored in a refrigerator with ice cubes can be safely eaten in natural time. Once the internal temperature rises, the food can only be consumed for two hours.



2. How to keep the insulation bag cold?

Freeze the gel pack overnight. When packing lunch, place it on top and bottom of perishable food to keep it cold. Of course, if there is a refrigerator in the company or school, store perishable items there on arrival.



3. Can I put ice in a thermal bag?

Pack food in watertight plastic containers or resealable bags to prevent moisture ingress and prevent cross contamination. Remember, cool air goes down and warm air goes up. If there is no ice bags, fill the resealable bag with ice or a frozen water bottle.


71-3-thermos lunch bag 

4. Where do you put the ice pack in the cool bag?

Place the ice cubes on the bottom of the cooler, and then cover the ice cubes with a thin solid layer, such as the sides of a milk box or cardboard. This barrier prevents food from sliding between ice cubes and getting wet.



5. What is the insulating bag made of?

Well, insulation bags are made of bulky but soft fabrics (such as polyester fibers). The interior is lined with heavy-duty foil. Between the outer layer and the inner layer, there is a thin layer of material, such as soft foam.



6. Do insulated lunch bags need to be refrigerated?

Freeze the gel pack overnight. When packing lunch, place it on top and bottom of perishable food to keep it cold. If you put the warming bag in the refrigerator, open the lid or warming bag so that the cold air can keep the food cold. Some foods without cold sources are safe.



7. What is an insulated lunch bag?

The layer is the key to the ability of an insulated cooler bag to keep its contents cool. Each ice cooler bag is made of at least one outer layer, an inner layer and a layer of insulating material in between.

Set up in 2007, as one of the main manufacturers specialized in making shopping bags with the eco friendly material, Zhejiang Meige Bags Co., Ltd. is located in Cangnan, Zhejiang Province, which is known as "the city of bag industry" in China. 
  #No. 8, Jinxin Middle Road, Qianku Industrial Zone, Cangnan County, Wenzhou City, Zhejiang, China. 
 0086-577-59867999
 0086-577-59867999


Free Design

Production Base

© 2020 Zhejiang Meige Bags Co., Ltd. All Rights Reserved.