What is the principle of breathability of PP spunbond non-woven fabric? How does the 80gsm PP spunbond process affect daily user experience

Non woven fabric is not "woven", but directly solidifies polypropylene (PP) fibers through physical methods such as high-temperature melting, spinning into a mesh, and hot rolling reinforcement. Among them, "spunbond method" is one of the mainstream processes - it allows continuous fibers to be oriented and stacked, with a uniform structure and stable pores, neither as dense as paper nor as loose and easy to disperse as gauze. This structure naturally has micrometer level channels, allowing air to freely pass through and water vapor to slowly escape, but liquid water is blocked due to surface tension. That's why 80g/㎡ has become the golden weight that balances stiffness and breathability - it's too easy to wrinkle and collapse, and too heavy can make the board hard, and this value is just enough to support DIY styling without sweating or feeling stuffy.

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When doing handicrafts, the biggest fear is that the fabric will have rough edges when cut, shrink when ironed, and leave marks when stacked. Hongye's colorful PP non-woven fabric has sharp cutting edges without shedding threads ✂️， Iron can be shaped with low temperature and light pressure, with clear creases and resistance to repeated bending. I used it to make a three-dimensional volcano model for a children's science exhibition, with a layer of lining inside the eruption crater that not only covers the wires but also allows for ventilation and prevents heat accumulation; I have also tried cutting it into a dust cover and placing it on the desktop small parts box. With a light and airy cover, dust cannot enter and can be easily ventilated by lifting it with your hand. High color saturation but not glaring, does not turn white under sunlight, and appears vibrant even on cloudy days. The whole roll unfolds smoothly, the edges are neat, and the cut length is as long as possible, without any hidden shrinkage or color difference. 80gsm PP spunbond non-woven fabric is a good choice for handmade production.