Length of material (web) with hollow chambers

摘要

The present invention relates to a length of material with hollow chambers, comprising an at least single-layer length (1) of foil (film) or woven material with incorporated or attached hollow spaces. In order to provide a length of material with hollow chambers which has the features mentioned at the outset and has a volume which can be changed as desired, the intention also being preferably to open up other areas of application for such a length of material, it is proposed according to the invention that the hollow spaces are constructed, at least in some cases, as preferably parallel channels (2, 2') which are each linked to a supply connection (3, 4). <IMAGE>