1. Different Functions: The breathable membrane functions to be windproof, waterproof, and breathable, whereas Y-Warm is designed to reduce thermal conductivity and enable moisture vapor transmission.
2. Different Structures: The breathable membrane has an “open-pore” structure, whereas Y-Warm features a “closed-pore” structure.
3. Different Breathability Mechanism:
The breathable membrane transmits moisture vapor through its “micropores.” In contrast, Y-Warm, which is inherently hydrophilic and quick-drying, absorbs moisture from the inside and releases it on the outside for evaporation.
4. Different Windproof Principles: The breathable membrane relies on a dense network of “micropores” to minimize air convection. Y-Warm, on the other hand, utilizes a “closed-pore” structure, which is inherently impermeable to air.
5. Waterproofing Disparity: For a breathable membrane, waterproofing is its primary function. In contrast, Y-Warm is a hydrophilic material and inherently lacks waterproof properties.
6. Different Application Methods: The breathable membrane is laminated to the back of a fabric. Y-Warm, however, is used as a “filling,” sandwiched between the outer fabric and the inner lining, and is simply secured with stitching.