A spinneret is a device used to extrude a polymer solution or polymer melt to form fibers. [1] Streams of viscous polymer exit via the spinneret into air or liquid leading to a phase inversion which allows the polymer to solidify.

Spinning is a manufacturing process for creating polymer fibers. It is a specialized form of extrusion that uses a spinneret to form multiple continuous filaments. [1] If the polymer is a thermoplastic then it can undergo melt spinning.

In fiber spinning, a liquid polymer is extruded through small holes in a spinneret to form thin filaments, as shown below. Upon leaving the spinneret the filaments solidify. After solidification, filaments can be combined to make threads and/or drawn to change the filaments’ properties.

A spinneret has an annulus die through which a polymer fluid is extruded, and the bore fluid (nonsolvent) is extruded along the polymer solution through a bore, forming the lumen of the hollow fiber/capillary membranes.

Polymer Fiber Spinning Spinneret Trustech is an innovative and advanced manufacturer of spinning spinnerets, with a focus on high precision membrane spinnerets for both single and multiple holes, both with an emphasis on top notch quality and sophisticated technology.

We offer hollow fiber membrane spinnerets for non-solvent induce phase separation methods. The spinneret is made of a high quality stainless steel, with the highest connectivity reaching 0.003mm.

In the spinning process, the effects of air gap, wind-up speed, dope extrusion rate, and bore extrusion rate were examined. In addition, the different lengths of the center tube, which acted as the inner-side fiber diameter during the preparation of hollow-fiber membranes, were studied.

We produce spinnerets for both methods. The classic wet spinning method uses chemicals and solvents to dissolve the cellulose. Subsequent the polymer mixture is pressed through the spinneret which is placed in the spin bath.

Mar 9, 2012 · Spinning is manufacturing process for creating polymer fibers. It is a specialized form of extrusion that uses a spinneret to form multiple continuous filaments. There are four types of spinning for polymer; wet, dry, melt, and gel spinning. First, the polymer being spun must be converted into a fluid state.

Jan 1, 2021 · In addition to teach the proper utilization of spinnerets for membrane fabrication, we aim to establish a fundamental understanding of the relationship among polymer structure, dope rheology, spinneret design, process conditions, phase inversion, and hollow fiber performance.