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Few Basics of Melt Spinning Machine and Wet Spinning Machine

Generally, man-made fibres are produced by spinning the polymer. You will find 3 major varieties of spinning process and they are:

  • Melt spinning

  • Dry spinning

  • Wet spinning

Let us discuss in this post about melt spinning and wet spinning only.

Melt spinning

For melting the polymer usually lab melt spinning machine is used and it will heat to a suitable viscosity meant for extrusion. This kind of spinning is generally used for polymers, which are not degraded or decomposed by the temperatures that are necessary for extrusion. Almost in 70% of the fibres, this method is preferred.

Wet spinning

Wet spinning is known as one of the oldest and most complex processes. It is also one of the most expensive methods of man-made yarn manufacturing. This kind of spinning is generally applied to polymers that do not dissolve and melt only in certain non-volatile or any thermal unstable solvents. You can use any lab wet spinning machine too.

Anytester is a professional company that deals with both these machines.

Wet spinning machine

Wet spinning machine is suitable for wet spinning of fibres and polymers. The spinning process is prepared using a wet-spinning technique. Long and short chemical fibres are among the materials available.

The following are a few examples of these materials:

  • Acrylic fibre

  • Alginate fibre

  • Aramid fibre

  • Chitosan fibre

  • Common viscose fibre

  • Lyocell

  • Milk protein fibre.


  • Newcell

  • Polyester

  • Polypropylene

  • Polyvinyl chloride fibre

  • Soybean protein fibre

  • Tencel

  • Vinylon

Melt spinning machine

The melt spinning machine uses a medium voltage melt spinning pump to spin silk in a long channel, which is then frozen into filaments by rather air or water bath. To accomplish consistent spinning, general melt spinning uses screw extrusion for producing melt pressure, which is then passed via a metering pump.

Melt spinning process

Melt spinning entails melting the material, extruding it from the nozzle, cooling, and solidifying it. After squeezing molten, it will be forwarded to a certain metering pump control and assuring the stable polymer melt will flow into the spinneret, which is one of the extrusions of your trickle wind quick cooling, winding, and curing.

As the guide roller is pre-stretched, it may perform the function of drawing long filament during the winding process. Extrusion temperature, winding speed, spinning cooling condition, size and shape of spinneret hole, and other process parameters are important in melt spinning.

Melt spinning shaping is a significant technique in fibre manufacturing that has a direct impact on post-processing difficulties and finished product quality. The internal stress on your solidified filament must be exceptionally low for giving low orientation in order to build a coil wire having high viscosity melt that has quite a good drafting performance.

The measures meant for its implementation will be below the unit heater of the spinneret, passing much above the temperature of 300 degrees centigrade in airflow, it will be best to use inert gas such as Nitrogen and Carbon dioxide, etc., at a much slower rate of cooling, and make the left spinneret strips should be kept in the state of the plastic state till the final fibre diameter is finally reached.

Melt spinning machine accessories:

Spinneret plate

Spinneret plate

Distribute plate

Distribute plate

Heating element:

Heating element 1

Heating element 2


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