Non-woven fabric, are composed of directional or random fibers and are a new generation of environmentally friendly materials. It has the characteristics of non-combustion, easy to decompose, non-toxic and non-irritating, rich in color, low price, and recyclable. For example, polypropylene (pp material) pellets are mostly used as raw materials, which are produced by high-temperature melting, spinning, laying, hot pressing and coiling in a continuous-step method.
(1) S: Spunbond tissue non woven = single-layer fiber web hot-rolled.
(2) SS: spunbond tissue non woven + spunbond tissue non woven = two-layer fiber web hot-rolled.
(3) SMS: spunbond tissue non woven + meltblown tissue non woven + spunbond tissue non woven = three-layer fiber web hot-rolled.
(4) SMMS: spunbond tissue non woven + melt-blown tissue non woven + melt-blown tissue non woven + spunbond tissue non woven = four-layer fiber web hot-rolled.