Retractable tunnels aluminium
The retractable tunnels can be used for various purposes. For example:
- container cover
- extra storage space
- draught lock or between buildings
- flexible spray or wash cabin
- when using overhead cranes
- quarantine area that complies with phytosanitary requirements
It is also very well-suited for asbestos removal, creating a single sealed space between building and container. Tunnels with a single-sided sloping roof (tunnel roofs come with a peak roof as standard) can be placed against a building on the highest side.
The tunnels consist of a frame of anodised aluminium arches fitted with pantographs (brackets) an quick tensioners. The arches are tensioned on the outer edge with flame-retardant PVC tarpaulin. The aluminium retractable tunnels rides on nylon wheels or air filled rubber tyres without rails or nylon wheels in storm-proof rails.
The larger versions are supplied with storm-proof rails as standard. Tensioning distance is up to 12 metres, with clear headroom of at least 1.5 metres up to 5 metres. Retractable tunnels are available in any required length. Depending on the type, retracted length is about 10 to 20% of extended tunnel length. Drive systems cannot be fitted to aluminium retractable tunnels, but they can be fitted to steel retractable tunnels
The tunnels are made of various cloth types, such as:
- insulated materials
- flame-retardant materials
- soundproof materials
- lightproof materials
With the standard PVC and gauze material, it is possible to choose between transparent sections in the roof, sides and curtains. One option is to seal the front and rear of the tunnel with double industrial curtains
. The frame can also be fully coated in a RAL colour.