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CO-EXTRUSION

Versatile solutions and materials. Lower costs.
Highest quality. Clean environment.

Co-extrusion allows for more than one material to be extruded. The advantage is that, on the one hand, recycled plastic can be reused to create a circular economy for plastics. On the other hand, different formulations and materials can be processed. Our customers’ demanding needs can thus be satisfied both from a financial and technical standpoint.

Typical applications for co-extrusion include:

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Bay post
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Window casement
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Frame extension
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Glazing bead
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Bay profile
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Panel
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Overlapping casement profile
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Rain gutter

LAYER.COEX plus

  • 55–65% core material content
  • Thick-film technology: Coating is up to 75% of the wall thickness of the profile
  • Core material either from main extruder or co-extruder
  • Mixed regrind can be used

 

18% in cost savings (compared to mono extrusion)

COMBI.COEX

  • About 50% core material content
  • Combination of thin-coat and solid-wall technology
  • Core material either from main extruder or co-extruder
  • Mixed regrind can be used

 

14% in cost savings (compared to mono extrusion)

LAYER.COEX

  • 60–70% core material content
  • Thin-film technology: Coating is up to 33% of the wall thickness of the profile
  • Core material from main extruder
  • The use of single-variety regrind is recommended

 

13% in cost savings (compared to mono extrusion)

CORE.COEX

  • 35–45% core material content
  • Solid-wall technology
  • Core material from co-extruder
  • Mixed regrind can be used

 

10% in cost savings (compared to mono extrusion)


Technical profiles

Co-extrusion is also used in technical profiles. Up to 5 different materials can be combined, including the following:

  • PVC
  • PP
  • PE
  • PC
  • ABS
  • PMMA
  • WPC
  • Glass-fibre compounds (such as ULTRADUR© by BASF)

Core materials for co-extrusion

Core formulation

Core formulations are less expensive blended materials, usually with more fillers (CaCo3) and fewer stabilisers – and well suited for the profile interior.

Single-variety regrind

Single-variety regrind (plastics with uniform markings according to DIN EN ISO 11469 or VDA 260) is obtained from grinding plastic profiles.

Mixed regrind

The most affordable regrind from different ground plastic profiles that have chemical compatibility (different colours, different materials).

Regranulate

Regranulate is produced via a melting process, also known as compounding; additives are added to improve properties and it is ideally suited for the co-extrusion process.

KEEPING YOU AHEAD IN EXTRUSION
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