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Beschreibung

Hollow chamber sheet (polypropylene) – lightweight, stable sign material for indoor & outdoor use

Hollow core sheets (also called polypropylene sheets) are a proven material for signs, notices, and advertising boards. Thanks to their internal air channels, they are particularly lightweight , yet dimensionally stable and surprisingly robust.

Weatherproof – suitable for indoor and outdoor applications
Very lightweight – easy to hang and mount
Recyclable – a more sustainable alternative to many classic sign materials
Flexible and virtually unbreakable – practical for transport and handling

Thicknesses: 3.5 mm or 8 mm

The board is available in 3.5 mm or 8 mm thicknesses . The surface is smooth and slightly ribbed – ideal for vibrant print designs. An additional advantage: The material can be cut if needed, making it foldable and allowing for particularly space-saving storage.

Typical applications

Polypropylene is extremely versatile and is one of the most popular materials in the signage sector:

Real estate signs
Window signs
Birth announcements
Lamppost signs
Signs / Information boards
Advertising signs

Assembly & Processing

Installation is straightforward: Depending on the application, the panel can be attached using double-sided adhesive tape or suction cups , for example. Drilling is also possible – the material is easy to work with as it is not hard.

Note: When ordering items with pre-drilled holes, some residual material may remain in the holes. This can easily be pushed out.

Important instructions

Not fire-retardant – therefore unsuitable for locations with fire protection regulations (e.g. public areas).
The channels of the plate may be slightly visible on the front under certain lighting conditions.

Specifications

feature	Information
material	Polypropylene (hollow chamber sheet / polyprop)
Strengthen	3.5 mm or 8 mm
Construction	With channels (hollow chambers / air ducts)
surface	Smooth, slightly ribbed surface
Area of application	Indoor and outdoor areas
Characteristics	Lightweight, stable, flexible, virtually unbreakable
foldability	Foldable by cutting
sustainability	Recyclable
Assembly	Double-sided adhesive tape, suction cups, drilling possible
Fire protection	Non-fire-retardant (not for public areas with restrictions)

FAQ

What is a hollow chamber sheet (polypropylene)?

A hollow chamber sheet is a lightweight polypropylene sheet with internal channels. This makes it particularly light, yet still stable – ideal for signs and boards.

Is the material suitable for outdoor use?

Yes. Polypropylene is weather-resistant and suitable for both indoor and outdoor applications, e.g. for advertising signs or real estate signs.

Which thickness should I choose: 3.5 mm or 8 mm?

3.5 mm is ideal for many standard signs. 8 mm offers greater stability and a particularly high-quality look – for example, for larger signs or frequent use.

How do you attach twin-wall polycarbonate sheets?

Very simple: e.g., with double-sided adhesive tape , suction cups , or through drill holes . The material is easy to work with.

Can you fold twin-wall polycarbonate sheets?

Yes. The board can be cut to make it foldable. This allows it to be stored and transported in a very space-saving manner after use.

Are there any material limitations?

Yes. The material is not fire-retardant and therefore not suitable for areas where fire safety regulations must be met (e.g., public buildings). Furthermore, the channels may be slightly visible on the front under certain lighting conditions.