Innovative polystyrene, polypropylene & plastic packaging, bespoke packaging and technical parts - Knauf Industries.


Our expertise serving your products.




Knauf Industries launches NEOPS®, its new certified non-petro-sourced foam material that supports the circular economy of plastics and is an alternative to EPS.



You can also find all our expertise and materials in the Expertise section.


As the world-leading polystyrene processor and French leader on the EPS moulded item market, we simultaneously factor in performance and growth to always offer more sales expertise. In 30 years, we have developed our know-how in the various technologies associated not solely with packaging but also with the manufacture of technical parts.
On the back of our expertise in processing expanded plastic resins, such as expanded polystyrene, we now provide services for particularly demanding industrial sectors.

The diversity of our production processes enables us to choose the best for your products.

The raw material

Expandable polystyrene, our raw material, is manufactured in part by Knauf in Belgium. It is obtained by polymerising styrene and an expansion agent: pentane. In our factories, it undergoes pre-expansion, a decisive phase in the moulding process. Under the effect of steam, the expanded beads then grow by 50 times their original volume and develop a closed-cell structure made up of 98% air.

Block moulding

Block moulding makes it possible to manufacture parallelepipedal items. These “blocks” are subsequently machined in our cutting workshops to manufacture protective stays, decorative products or prototypes.

  • Dimensions: 1m x 1m x 6m (WxLxH)
  • Minimum density: 10 g/L


Equipped with over 240 presses, distributed throughout 40 production facilities, we deploy our closed-cell moulding expertise for the manufacture of items made of EPS (max.: 2000 x 1400cm, densities 18g/l – 60g/l)

Besides being customisable, our tools are “mobile” within our facilities. Their adaptability to a large number of machines makes it possible to envisage rapid transfer of production.

The diversity of our equipment (vacuum equipment, transfer and film complexing) allows us to adapt our production according to the complexity of your products.

Complexing helps enhance the mechanical behaviour of the closed-cell foam object, by increasing its rigidity and making it more watertight.


Cutting is obtained by heating a steel wire which passes, at a regular speed, in a block of expanded material, previously manufactured from a block mould.

  • Multiple cutting machines:
    – Flat (parallelepipedal object)
    – Digital (2D object)
    – 3 axes (3D), for items with embossed designs, manufactured individually or in very small production runs

These cutting lines enable us to produce products with geometries of varying complexity.

Cutting allows for great creativity in item design and production. This process has many applications, which are suited equally well to small and large production runs.


Discover our Technidec® offering


EPS is one of Knauf Industries’ preferred materials. EPS products are 100% recyclable. Either by crushing and reintegration into new technical parts or industrial packaging. Or by compacting it to make new raw material for the manufacture of plastic parts.

Find all our actions in terms of recycling in the Ecology section

Launch of Knauf Circular® service

With the passing of the Circular Economy Act by the French National Assembly on 21 January 2020, the Knauf Group is giving new life to EPS scrap, packaging and dunnage with its new Knauf Circular® service.

An EPS collection and recycling initiative provided by the Knauf Group for its brands Knauf, Knauf Industries, Isobox Isolation and Isobox Agromer, this new service is currently being launched in a pilot phase in the south-eastern quarter of France and is due to be rolled out throughout France.

logo Knauf Circular - valorisation du PSE

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