In order to ensure that we can always provide our customers with the best possible solutions in terms of both functionality and economics we have focused on developing a wide knowhow about traditional and special plastic materials since the company was founded.

Our focus is on specific properties, the materials' possibilities and limits and the special requirements our customers have for exactly their application.

The entire organisation's focus is set on ensuring a high quality level, great customer satisfaction and innovation in all aspects in order to be able to offer the best solution to any problem.

Offering advice to customers
Our products have been used in all industrial areas, be it pneumatics, foods, toys, chemicals, medicine, sanitation, audio and conveyors. These applications form our background for offering advice to customers concerning choise of the optimal material and design. 

28 extruders
Our determined investments over the years have ensured that our 28 extruders can process almost any thermoplastics in a wide variety of dimensions from 0.5 to 150 mm. 

Our present product range includes more than 70 different grades divided on the following materials:

  • Polyamide (PA 11, PA 12 and PA 6)
  • Polyethylene (PE LD, PE HD, EVA and EBA)
  • Polypropylene (PP)
  • Polycarbonate (PC)
  • Acetal (POM)
  • Cellulose (CAB)
  • Fluor polymers (PVDF, ETFE, PFA and FEP)
  • Various alloys (TCP)
  • Thermoplastic rubber (TPE)
  • Polyurethane (TPU)
  • Polysylfon


In order to achieve optimal flexibility in our daily production we have established a well-equipped tool shop to take care of the following:

  • day-to-day maintenance of extruders and attachments
  • design and manufacturing of tools for the production
  • production of drawings for tools by means of CAD-equipment, production drawings and
    working drawings to the customer

Having the tool shop under the same roof as production gives us quick and efficient maintenance of equipment avoiding unnecessary and long operational breakdowns.

In addition tools are produced much quicker and we have the possibility to adjust new and existing tools immediately.

The broad skills in the tool shops have meant that some of our extruders were built according to our own designs.

This is a guarantee that the extruders fulfil the specific needs and requirements we have in order to achieve an optimal production.


Does your product need subsequent processing or finishing?

Contact us to discuss the solution to your special requirement.

We can offer:

  • clipping or cutting into fixed lengths
  • clipping or cutting in angles, e.g. in bevel protractor (45°)
  • marking
  • shaping, e.g. bending to fit specific needs
  • heat treatment with a view to avoid shrinking in use
  • mounting or installation of equipment, e.g. fittings
  • gluing


We are committed in all phases from idea to finished product.

The objective is to simplify the development process and reduce costs.

When you choose Knudsen Extrusion ApS as your cooperating partner you achieve a dedicated development of both prototypes and finished product. You save time and money and the implementation of the product becomes easier and quicker.

It is our pleasure to offer you our innovation, commitment and know-how. This could be our contribution to your next extrusion project.


Packaging materials are meant to protect the product in the best possible way during transport, storage and use. The packaging materials must be cost effective, match the product's price and observe national and international regulations about environment, reuse etc.

The below mentioned packaging materials were all chosen with those requirements in mind, but if you have special requirements, please contact us. We will co-operate with you to find the best solution for your products.

Packaging materials:

  • Coils (wood, plastics, cardboard and metal)
  • Boxes
  • Cases (cardboard)
  • Pallet cases (wooden pallet with cardboard "cap")
  • Plastic sheeting
  • Paper

For further information about packaging materials please refer to the data sheet for packaging.



Ny Esbjergvej 5
4720 Præstø
Phone: +45 55 99 15 30

Our QMS is certificied by DNV according to
ISO 9001