The yarn manufacturing process involves spin-drawing molten nylon, relaxing and controlling the yarn tension, and then winding the yarn.
A novel process is provided for making spin-drawn yarn from poly(trimethylene terephthalate).
Even when the polyester fibers are produced by a direct spinning-drawing method or other general melt-spinning method, stable quality and process properties are obtained.
The invention discloses a stretch spinning method for manufacturing a multifilament yarn and a polyamide yarn with a high shrinkage force.
The first and second extruders are connected to substantially opposite sides of a plurality of spinning disks with optionally interconnected gear pumps and mixing devices.
A coupled spin-draw process for making a fully-oriented nylon yarn including extruding molten nylon polymer with a selected RV through a spinneret and cooling to produce a yarn.
Also disclosed is a process for making such yarns.