Choosing a Hollow Fibre Spinneret: Single, Dual or Triple Orifice

At a glance. Tech Inc. Hollow Fibre Spinnerets are made to your fibre dimensions in single, dual and triple orifice designs.

Which design

• Single orifice: one dope layer and bore fluid. Most UF and MF fibres.

• Dual orifice: two dope layers co-extruded.

• Triple orifice: adds a sheath fluid or a third layer.

What matters

• Concentricity, for even walls.

• Annulus gap and needle size, for OD and ID.

• Temperature control, for hot dopes.

Frequently asked questions

Can you copy a spinneret we already use? Yes, from a drawing or sample.

Send your fibre size to mail@techincresearch.com.