Contact
AC-Profil AG

Hollow chamber profiles.

Stiff, light,
thermally smarter.

Hollow chamber plastic profiles combine stiffness with minimal material — making space for thermal insulation, cable routing or functional reinforcement.

Benefits

Why hollow over solid.

Applications

Where hollow chamber profiles make the difference.

From window frames to load-bearing industrial profiles — we develop hollow chamber geometries that match your load case, the applicable standard and your cost targets.

  • 01Window and door profiles
  • 02Facade elements
  • 03Industrial frames
  • 04Furniture and interior fit-out
  • 05Cable ducts with a load-bearing function
  • 06Traffic safety profiles

A hollow chamber profile uses material only where the load needs it. The result is a stiff section that needs less plastic than a comparable solid profile — more economical and with a smaller environmental footprint.

The chamber layout is defined in the design phase, together with the tolerances and the material. The extrusion and calibration tools are built in our own tool shop, and every first sample is delivered with a measurement report.

FAQ

What customers ask about hollow chamber profiles.

Have a question that is not answered here? Get in touch — we reply within one working day.

Which materials do you use for hollow chamber profiles?
We extrude hollow chamber profiles in PVC and PP, and as co-extrusion. The material is chosen together with you according to the application, the operating environment and the required stiffness.
When is a hollow chamber profile better than a solid profile?
Whenever weight, material use or thermal performance matter. Hollow chamber profiles can be up to 60 % lighter than solid profiles at comparable stiffness, and the air chambers improve thermal insulation — in window frames, for example, they help to interrupt the thermal bridge.
Can a hollow chamber profile include a seal?
Yes. Using hard-soft co-extrusion we combine a rigid profile with an elastic sealing component in one tool. We also produce hollow chamber seals in TPE or soft PVC for windows, doors and lids.
Can the chambers be used for cables or fixings?
Yes. Hollow chambers can serve as cable or fastening channels, so one profile takes on both a structural and a functional role.
What tolerances and quantities are possible?
Standard tolerances are ± 0.2 mm to ISO 2768-1+2, class c; tighter values depend on geometry and material. There is no rigid minimum order quantity — from pilot profiles to large series.

Develop your hollow chamber profile.

We recommend the optimal chamber layout for your loads.