Photo: Collected
Compared to drylaid nonwovens, the spunlaid technology eliminates the costly transformation of polymers into staple fibers. In this process, synthetic polymers in chip or flake form are extruded. The molten polymers, predominantly Polypropylene, Polyester, or Polyethylene, are first spun into endless filaments by spinnerets. Underneath the spinnerets, the filaments are cooled and stretched by air and are laid down on an apron in a continuous process.
Spunlaid nonwovens
To achieve the required properties of filaments like titer, strength, elongation, and shrinkage Polyester needs higher spinning speeds than e. g. Polyolefins.
Source: Online/NAN
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