Skip to main content
RISE logo

Spinning pilot

Increased population in the world results in increased consumption of textiles. This means that the textile raw material needs to be optimised and its process developed to make them more sustainable so that the consumption of the earth's resources is reduced. In that context, the spin pilot is excellent for new techniques and ideas about textils.

Overview of the spinning process 

Viscose solution is pressed through small holes into a spinning bath which can contain various chemicals such as sulfuric acid, zinc sulphate or sodium sulphate. Carbon disulfide disappears, and cellulose precipitates. The precipitate is drawn into a continuous thread. 

Offer in viscose pilot

In the spin pilot, we can use different compositions of the spin bath and thus offer customers projects throughout the chain from raw material based on lignocellulose to finished thread. You can test an existing process or a future process. 

By evaluating both the spinning process and the properties of the thread, knowledge about the dissolving cellulose for further processing into technical or textile viscose materials can be gathered. RISE has a complete chain of pilots; from chipping, boiling and bleaching via viscose solution to finished viscose thread in the spin pilot. 

It is common for pulp manufacturers to investigate their possibilities of increasing their dissolving production or, from a completely different segment, to convert the process towards this area. In evaluating the pulp quality, the viscose fibre is characterised. 


Testbed name

Spinning pilot - manufacture thread on a lab scale

Testbed category

Laboratory testbeds (LT)


Pulp, paper and packaging


Bioeconomy, Biorefinery, Circular transition, Pulp and paper, Textile

Strategic innovation program



Region Västernorrland

Contact person

Nadine Hollinger

Forsknings- och utvecklingsingenjör

+46 10 722 32 22

Read more about Nadine

Contact Nadine
CAPTCHA This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.

* Mandatory By submitting the form, RISE will process your personal data.

Diana Reyes Forsberg

Contact person

Diana Reyes Forsberg

Read more about Diana

Contact Diana
CAPTCHA This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.

* Mandatory By submitting the form, RISE will process your personal data.



Viscose fiber characterization

Fibre characterisation such as linear density, fibre strength or tenacity and elongation of staple fibres and filaments from viscose show the mechanical properties of the fibre.
Test & demo

Viscose pilot plant

To develop and optimise regenerated cellulose, RISE has two viscose pilots, one on a micro-scale and another one for larger volumes of viscose solution. The pilots consist of six parts which together correspond to an actual viscos…

Molecule weight distribution

RISE can characterize pulp, carboxymethylcellulose, polyacrylate, starch, biocides, lignin, black liquor, hemicellulose.

Analyzes of pulp for dissolving

To see if a cellulose pulp is suitable for dissolving, it needs to be characterized and tested, which RISE can help you with.

Troubleshooting gives you solutions to problems

Processes and products are often contaminated for various reasons and lead to driveability problems that create financial and environmental penalties and possible complaints from customers. RISE's solid expertise and equipmen…

Light microscopy quickly shows small details

With light microscopy, you can quickly get an overview of the problem and all images are displayed in color. It is often used in connection with product development, problem solving and support to end customers. To gain an underst…

Scanning electron microscopy sees surface structure and elements

Processes are often warm and humid that create good environments for bacteria, precipitates and other undesirable phenomena that contribute to disruption and degradation of end products. Scanning electron microscopy (SEM/XDS) has …

Identification of various organic and inorganic compounds

FTIR Fourier Transform Infrared Spectroscopy, is mainly used for positive identification of various organic and inorganic compounds in complex samples. Even very small samples, such as dots and stains in pulp and paper, can be stu…