Home >> News >> News

How Self-Heating Patches Deliver Instant Relief and Comfort

Nov. 23, 2023

Self-heating patches have gained immense popularity due to their instant heating capabilities and diverse applications. These innovative patches offer a quick and efficient way to generate heat upon activation. But have you ever wondered about the intricate science behind these patches and how they work?


 The Principle of Self-Heating Patches


Self-heating patches operate on a fascinating principle rooted in the exothermic reaction of iron oxidation. The core mechanism involves iron powder oxidizing when exposed to moisture in the air. Simultaneously, activated carbon, known for its strong adsorption properties, stores water vapor within its porous structure. These vapor droplets interact with the air and iron powder. The addition of sodium chloride catalyzes a rapid reaction, resulting in the production of iron hydroxide and the subsequent release of heat.


{Self-Heating Patches}


 Composition and Design


The design and composition of self-heating patches are critical to ensuring their functionality. The material of the patch's bag comprises specific layers, including raw materials, gelatin, and non-woven fabric. The outer bag, typically a microporous permeable membrane, is sealed to prevent the reaction from occurring prematurely. Upon use, the outer bag is removed, allowing oxygen from the air to enter through the breathable membrane, triggering the heat-producing reaction.


 Control of Heat Release


The duration and temperature of heat release are carefully controlled by the oxygen transmission rate of the breathable membrane. If the membrane permits rapid oxygen permeation, excessive heat might be released, posing a risk of skin burns. Conversely, if the permeation rate is too slow, the warmth produced may be insufficient. Achieving the optimal balance is crucial for the patch to function effectively and safely.


 Functions and Benefits


The applications of self-heating patches are diverse and encompass various health benefits:


 1. Therapeutic Applications

   - Cold prevention and body warmth retention.

   - Warming of the uterus and stomach, aiding in menstrual care.

   - Instant heating for rapid warm compresses.


 2. Pain Relief

   - Rapid relief from pain associated with cold-related ailments.


 3. Medical Benefits

   - Promoting microcirculation, aiding in anti-swelling and analgesic functions.

   - Alleviating conditions such as frostbite, bone injuries, and muscle damage.


 4. Alternative Medicine

   - Enhancing meridian pathways and aiding specific acupuncture points.

   - Alleviating discomfort from stomach coldness and menstrual blood stagnation.


 5. Temperature Regulation

   - Substituting heavy winter clothing by providing temperature protection to the body in winter.




Self-heating patches are a remarkable innovation leveraging scientific principles to offer instant heat and therapeutic benefits. Understanding their underlying science and diverse applications showcases their efficacy in providing relief and warmth for various conditions.

{Self-Heating Patches}


Related Products
  • wechat

    Jessica Zhang: Jessica-Keepfit