the first stage
Preparation of the spinning solution
Cellulose acetate flakes and acetone are mixed together intensively. A small amount of titanium dioxide is added as a delustering agent to enhance the product quality.
To achieve a spinning solution free of particles able to block the spinnerets, the mixing is followed by an intensive filtration.
the second stage
Spinning Process
The mixture is forced through the spinneret of a spinning cell. As it emerges, the acetone starts to evaporate from the spinning solution efficiently.
The evolving filaments solidify and are brought together while the acetone is almost completely removed and recovered.
the final stage
Tow Crimping
The resulting filaments from numerous spinnerets are combined to form a cable of up to several tens of thousands of filaments ready for texturing.
These cables are subsequently crimped in a stuffer box to obtain the typical cigarette filter tow structure.
the FINAL stage
Drying and Processing
The fresh crimped structure is permanently fixed by drying processes to ensure stability before final packaging.
Finally, the cigarette filter tow is compressed in bale presses to form filter tow bales, ready for global shipment.
