Tiny Holes Of 0.1–1 Mm Microporous Vegetable And Fruit Bags Preservation And Freshness

Tiny Holes Of 0.1–1 Mm Microporous Vegetable And Fruit Bags Preservation And Freshness​
 

What is the breathability principle of microporous bags?
 

1. Core Breathability Mechanism
 

1. Gas Diffusion: Oxygen, carbon dioxide, and other gases inside and outside the bag flow naturally due to the concentration difference. The pores provide channels for these gases, balancing the gas ratio inside and outside.

2. Moisture Permeation: Water vapor inside the bag can escape through the pores, while a suitable amount of dry air from outside can enter, preventing condensation and maintaining humidity balance.

3. Passive Regulation: The size and density of the pores determine the breathability rate, perfectly matching the breathing or moisture release needs of the packaged product. This prevents excessive breathability leading to water loss or insufficient breathability leading to suffocation and spoilage.

 

2. Key Influencing Factors
 

1. Pore Parameters: Larger pore size and higher density result in stronger air and moisture permeability; customization is required based on product characteristics.

2. Membrane Material Itself: The air permeability of the base membrane material (e.g., PE membranes have slight air permeability) combined with pore permeability determines the overall air permeability.

3. Environmental Conditions: External temperature, humidity, and air pressure differences can slightly affect the diffusion rate of gases and moisture.