Insulated bags are a very useful tool to help us keep our food and beverages
cold during outdoor activities, picnics or traveling. However, many people are a
little confused about how long insulated bags stay cold. In this paper, we will
discuss the cold-keeping effect of insulated bags and the key factors affecting
the cold-keeping time.
Principles of Cooler Bags
The cold preservation effect of thermal insulation bag mainly depends on the
material and structure of its internal insulation layer. Commonly, thermal
insulation materials, such as foam and polyethylene, are used inside the thermal
insulation bag. These materials can effectively slow down the transfer of heat,
thus prolonging the cold storage time of food and beverages.
Influence of key factors on cold retention time
The length of time to keep cold is affected by several factors. The following
are some of the key factors:
· a. Quality of the bag: The quality and insulation of the bag is an
important factor in determining the retention time. High-quality insulated bags
usually have better insulation and are able to stay cooler for a longer period
of time.
· b. External temperature: The temperature of the external environment is one
of the key factors affecting the retention time. In a hot environment, the
cooling effect of the insulated bag will be weakened accordingly and the
refrigeration time may be shortened.
· c. Temperature of refrigerated items: Putting pre-frozen food and drinks
into the insulated bag can prolong the time of keeping cold. If the temperature
of the refrigerated items is high, the insulated bag needs more time to lower
its temperature and keep it refrigerated.
· d. Closure of the insulated bag: The closure of the insulated bag also has
an impact on the retention time. Ensure that the insulation bag zipper, buckle
or other closure device intact, and try to avoid frequent opening of the bag in
the use of the process, in order to reduce the entry of heat, you can choose to
use insulation bags with airtight zipper, such as weierkenbag production of
airtight chain cooler bags, effectively extend the insulation time 2-4
hours!
Refrigeration Time Range of Insulated Bags
Refrigeration time for insulated bags varies by brand and model. Generally
speaking, insulated bags can keep food and beverages refrigerated for anywhere
from 2 hours to 18 hours. For example, weierkenbag’s waterproof cooler bags’ can
keep food and beverages cold for up to 16 hours.
Ways to improve the cold retention of insulated bags
If you wish to extend the cold retention time of your insulated bag, you can
try the following methods:
· a. Pre-chilling: Chill your food and beverages well beforehand to lower
their temperature before using the insulated bag.
· b. Use ice packs or ice cubes: placing ice packs or ice cubes in the
insulated bag can further lower the temperature inside the bag and extend the
time it stays cold.
· c. Avoid direct sunlight: Try to avoid exposing the insulated bag to direct
sunlight, as sunlight will accelerate the temperature inside the bag.
www.dayu-bags.com
Suqian Dayu Packaging Technology Co., Ltd.
