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Polypropylene BCF filament, commonly known as polypropylene bulked yarn, polypropylene carpet yarn, BCF is the English abbreviation for bulked continuous filament, and does not only refer to bulked continuous filament produced by a one-step process.
The editor will give you a brief introduction to the three processes for making polypropylene BCF filaments:
The first type: one-step method: continuous spinning, stretching, deformation, winding process
The second method: two-step method: spinning and drawing combined → doubling yarn deformation or spinning winding → doubling yarn stretching deformation
The third type: Three-step method: spinning doffing→combination drawing→deformation
The process requirements for one-step continuous production of polypropylene BCF filaments: using three screws of the same specification at the same time can extrude melts of different colors corresponding to the three requirements, and then pass through the distribution pipe to the spinneret, so that each filament consists of three types Different colors of silk are assembled, and finally polypropylene BCF filaments are made through continuous stretching and deformation.