Manufacturing nylon fibers and nylon
yarns, as explained in the following:
Polycondensation
This is a chemical process to produce
the nylon polymer using caprolactum and acetic acid.
Chipping
The nylon rope produced from the
polymerization process is cut into chips.
Melting
In this stage nylon chips are melted to
reach the viscosity suitable for pumping to the spinning process.
Spinning
In this process, molten nylon is pumped
to spinnerettes, and the polymer streams coming out are cooled by blown air
that let the polymer solidifies and form continuous nylon filament.
Drawing and twisting
The nylon yarn produced in the previous
process is subjected to stretch, is given twist and is
wound on a bobbin .
Texturing
This process subjects the filament yarn
to heating, then inducing crimp in the filament and then cooling the filament,
thus forming a textured nylon yarn.
Drawing and crimping
This process (for fibre
production) is in the production line of nylon fiber in which filament
tows from spinnerettes are collected to form a sheet which is subjected to
stretch and crimping to give the required degree of crimp and fineness.
Cutting and pressing
In this process the collected tows of nylon filaments pass
through a cutting machine which cuts the filaments into fibers with length
similar to wool fibers. The resulting nylon fibers are pressed into bales with
polyethylene cover