GRP sandwich gratings
GRP sandwich gratings consist of a GRP grating, which fulfills the load-bearing function, and two laminated GRP panels (1x top, 1x bottom). The standard panel thickness is 3 mm. Panel thicknesses of up to 5 mm can also be used as an option.
Ihre AnsprechpartnerTo ensure an optimum connection between the two elements, the surface of the grating is sanded flat before the panels are laminated on.
In principle, all cast GRP gratings can serve as the basis for a GRP sandwich grating.
Various surfaces are available to choose from. Please refer to our information on anti-slip properties.
Resin matrix systems
GRP floor systems with various matrix systems
The various resin matrix systems can be modified to achieve special properties in terms of corrosion resistance, temperature and fire behavior.
Orthophthalic (OPR) – polyester resin for mildly corrosive areas
- Resin quality: Polyester resin based on orthophthalic acid
- Fire-retardant, halogen-free (non-toxic)
- Self-extinguishing
- HDT(A): 80 °C
- Dimensional stability according to Martens: 160 °C
Isophthal (IPR) Standard – polyester resin for universal use
- Resin quality: Polyester resin based on isophthalic acid
- Fire-retardant, halogen-free (non-toxic)
- Self-extinguishing
- HDT (A): 120 °C
- Dimensional stability according to Martens: 160 °C
Vinyl ester (VER) – vinyl ester resin for extreme chemical resistance
- Resin quality: vinyl ester resin
- Fire-retardant, halogen-free (non-toxic)
- Self-extinguishing
- HDT (A): 120 °C
- Dimensional stability according to Martens: 180 °C
Vinyl ester resin is used when improved temperature and chemical resistance as well as particularly high impact and fatigue strength are required. Vinyl ester resin is therefore ideally suited for quality gratings with high resistance for use under the most extreme conditions.
Phenolic (PHR) – phenolic resin for maximum fire safety
- Resin quality: phenol
- Fire-retardant, self-extinguishing
- Extremely low smoke emission
- HDT (A): 160 °C
- Dimensional stability according to Martens: 180 °C
Phenolic resin is characterized above all by its high temperature and fire resistance, low smoke development and toxicity of fire gases. When exposed to fire, the speed at which the flames spread is particularly low.
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