What is the principle of thermal insulation bag?
There is a thermal insulation material in the thermal insulation bag. The thermal conductivity of this material is relatively low, which blocks the contact with the air, so that the temperature inside the bag can gather in the bag and can not be directly dispersed. In this way, the time of temperature loss in the bag is prolonged, and the purpose of thermal insulation is achieved. Generally speaking, the thermal insulation bag material has poor thermal conductivity and slow heat dissipation.
Insulation package features:
1. Heat and cold insulation
Heat and cold insulation is the basic function of thermal insulation bag. It is a special bag with short-term thermal insulation effect. It can keep cold / heat. The product insulation layer is pearl cotton + aluminum foil tin paper, which can provide good thermal insulation effect.
To have superior impact resistance, it is not easy to break and leave scratches when pressed or impacted.
This is the first consideration in choosing insulation package. Although different products have different sealing methods, sealing is a necessary condition for the lasting preservation of stored food.
The international sealing measurement standard is evaluated by moisture permeability test. The moisture permeability of high-quality insulation package is 200 times lower than that of similar products, which can keep things fresh for a longer time.
Precautions for insulation tape:
1. Open flame contact or sharp tool cutting is disabled.
2. Avoid long-term exposure to rain, humidity and sunlight, which will affect the thermal insulation effect.