A non-woven composite breathable membrane is a crucial component in air-activated warmers, controlling the entry of oxygen to regulate the heat generated by the warmer. Air-activated warmers rely on a chemical reaction between oxygen and the iron powder inside the warmer to produce heat. Here’s how the membrane works in this process:
Function of the Non-Woven Composite Breathable Membrane:
Oxygen Regulation:
- The breathable membrane controls the rate at which oxygen enters the warmer. Oxygen is essential for the oxidation of the iron powder, which is the key reaction that generates heat in an air-activated warmer.
- The membrane’s material is designed to be semi-permeable, meaning it allows a controlled amount of air (oxygen) to pass through while keeping the warmer’s contents secure. This ensures that the heat generated is consistent and lasts for a long duration.
Maintains the Reaction:
- By controlling the oxygen flow, the membrane helps maintain a steady chemical reaction. If too much oxygen enters, the reaction would be too rapid, leading to overheating or a shorter lifespan of the warmer. If too little oxygen enters, the reaction would slow down, reducing the heat output or stopping it altogether。
- The porosity and structure of the non-woven membrane are engineered to provide the ideal oxygen supply for the air-activated warmer to generate heat efficiently over a specific time (usually up to 8-12 hours).
Prevents Overheating:
- The membrane helps prevent the warmer from overheating by regulating the oxygen flow. Since the heat is generated by the oxidation of iron, too much oxygen can cause the warmer to produce more heat than is safe, potentially causing burns or discomfort. The breathable membrane ensures that the warmer heats up to a safe and stable temperature.
Durability and Flexibility:
- Non-woven membranes are typically made from synthetic fibers like polypropylene or polyester, which are durable yet flexible. This makes them resistant to tearing or breaking, ensuring that the warmer remains effective and safe to use, even under physical pressure during activities like skiing, hiking, or other outdoor sports.
How It All Works Together:
- Inside the air-activated warmer, the iron powder, along with other ingredients like water, salt, activated carbon, and vermiculite, reacts with oxygen from the air to produce heat.
- The breathable membrane ensures that oxygen is delivered in a controlled manner, allowing the heat to be generated slowly and consistently over the desired time frame.
- Without this oxygen-regulating membrane, the air-activated warmer would either not function properly or generate excessive heat in an uncontrolled fashion.
Conclusion:
The non-woven composite breathable membrane plays a crucial role in air-activated warmers by regulating the entry of oxygen. This controlled oxygen flow allows for a steady oxidation process, ensuring consistent heat production and preventing overheating, all while extending the warmth duration for activities such as outdoor sports or labor protection.
As the largest non-woven fabric manufacturer in China, Jiangsu Hanyao’s non-woven fabrics account for more than 50% of the Chinese market. We are more professional in how to control the temperature and duration of the product. If you are interested, please contact us at sales@jshanyao.com
