Self-heating food packaging is that put the iron powder into special nonwoven fabric bag, then generate the heat through chemical reaction of iron powder and water.It is very convenient for outside trip because of don’t need an external heat source.
There are two kind of self-heating packing:
- Chemical reaction
The Chemical reaction is the most common way of self-heating. When mix iron and water, the water will reacting with the ferrous iron in the eco-friendly plastic box and releases heat, which can cook the food
- Hydration reaction
The other self-heating is use hydration reaction, when calcium oxide is mixed with water,it will reacting and forms calcium hydroxide, and releases heat and for heating food.
What materials we use to packing the iron powder or calcium oxide
It is special nonwoven fabric for self heating food packaging, the material is polypropylene, the feature is high temperature resistance, no leakage, good air permeability, uniform mesh and good water permeability, suitable for high temperature or low temperature blanching or ultrasonic rolling, waterproof, environment-friendly, light ,soft,non-toxic and non irritating.
How to use self-heating food packaging
Self-heating food is easy to use, put the self-heating bag into container, then add water into it and close the container,it will start produce heating to cook the foods.
Advantages of self-heating food packaging
Self-heating food packaging is very convenient for our daily life.
- Convenience:we don’t need looking for an external heat source, that means you just only take one self-heating food packaging, even if you don’t have microwave, you also can heating foods quackly.
- Portability:it is very lightweight and easy to carry, you can put it into your carry-on bag.
- Freshness:it helps you keep the food fresh, we use food grade aluminum foil bag to pack the goods,it is sealed.
Disadvantages of self-heating food packaging
Self-heating food packaging also has a few disadvantages:
- Cost:it is more expensive than traditional food packaging, so people won’t use it very Frequently.
- Safety:don’t close to the packaging and certainly can’t touch it when release heat, it will cause burns your hands or other regions when it is producing chemical reaction .
- Environmental impact: it will affects the environment if chemical substances can’t be handle
Overall
Self-heating food packaging is very easy for food heating, it is very convenient for our daily life, but we need to noticed the correct use method.