The process: open molding

The production of glass fiber reinforced plastic (GRP) gratings takes place by means of an open molding process. During this process, the fiberglass strands are brought together in a resin-filled mold. After curing, this results in a plastic grid with open meshes. This provides two primary advantages: very high strength and maximum corrosion resistance.

Glass fiber reinforced plastic gratings

Glass fiber reinforced plastic is a composite made of glass fiber in combination with resin. In order to achieve different mechanical properties, different resin types are selected, including isophthalic, orthophthalic and vinyl ester. A glass fiber reinforced plastic grille offers several advantages compared to grilles made of, for example, steel. Glass fiber reinforced plastic is strong and has maximum corrosion resistance. As a result, many companies use it in corrosive environments to reduce maintenance costs. GRP gratings have various applications, such as in walkways and above-ground platforms.

Open molding

The open molding process is as follows. A mold is used for each grid. This mold is filled layer by layer with resin and fiberglass to obtain the desired thickness and panel dimension. When this goal is achieved, the panel is removed from the mold. The result is a glass fiber reinforced plastic grid with an open mesh. Due to our wide range of moulds, many shapes and heights of GRP gratings are possible.

GRP Gratings