Press releases: Robust multi-layer membrane for ropespace-architecture

Membranes are used in the field of architecture in many different ways – as to be seen in the filigree spacenet architecture of the Berlin-based rope play equipment specialist Corocord. The manufacturer uses the membranes which are developed and assembled by Corocord itself as space-creating and constructive elements. The robust multi-layer membranes therefore have to harmonise with the "Herkules-type" ropes the company uses when subjected to tensile forces.

The surface of Corocord membranes consists of two-millimetre-thick, friction-proof black rubber of conveyor belt quality. This material is very highly resistant to ultra-violet light – an important feature for use in outside areas. A four-layer, polyester armouring is embedded in the outer surface. Despite its robust structure, the finished membrane is only 7,5 millimetres thick.

Corocord membranes are used in rope play equipment of the Corocord brand as well as in large-scale projects such as the "Das Netz" installation forming part of the "Kunst + Architektur in Alt-Köpenick" (KAiAK) urban art project in the Berlin district of Alt-Köpenick. This unusual climbing scape resembles a suspension bridge reflected horizontally, and has become an aesthetic waymark in Köpenick since its opening in August 2007. Corocord membranes with a bed of foamed plastic, cover the rope fastening clamps on the steel frame. Thus the elastic material, which is also extremely resilient mechanically, ensures lasting protection of the sensitive areas of the metal structure.

Unlike tent membranes, one to two millimetres thick, that are also used for climbing and play equipment, the Corocord membranes are extremely resistant to vandalism. For example, it is virtually impossible to cut through the sturdy membranes using a pocket knife. This is reflected in the way the membrane surfaces are integrated into the spacenet structures: as connecting elements stainless-steel S-clamps lock into stainless steel eyelets pressed into the membranes.

The Corocord membranes are used in the spacenet structures to create floating places to rest, lofty, facetted play houses and partition walls in three-dimensional fantasy worlds – to be seen in the Play Labyrinth, which Corocord realised in the Viennese Schönbrunn Palace Park in 2006 on the basis of a design by Günter Beltzig. Here the numerous membranes take up the physical and aesthetic tension of the three-dimensional rope structure. This gives the rope net structures, based on designs by the company’s founder, the architect Conrad Roland, an additional spatial dimension.

For large play and climbing structures, Corocord also uses the Soltis86 textile made by Ferrari. This material only 0,43 millimetres thick serves to provide shade. This sun sail made of Soltis86 filters 86 per cent of sunlight and provides children with a cool, shady place for play.