CONTAINER, TUBE OR CHEMICAL APPARATUS WITH COLOUR INDICATOR, AND COMPOSITE SEMI-FINISHED PRODUCT WITH COLOUR INDICATOR FOR PRODUCING A CONTAINER, TUBE OR CHEMICAL APPARATUS

摘要

The invention relates to a container, a tube or a chemical apparatus in particular for the construction of chemical apparatus for storing or for transporting aggressive storage media, with a solid inner layer on the inner side of which the storage medium can bear and which is produced from a thermoplastic resistant to the storage medium, with an adhesion-promoting layer which is mounted on the outer side of the inner layer and which consists of a textile sheet-like structure, and with a carrier layer which is mounted on the outer side of the adhesion-promoting layer and which is intended for mechanically supporting the layer structure, wherein an indicator layer is provided between the inner layer and the outer layer, wherein the material of the indicator layer is discoloured by components of the storage medium which permeate through the inner layer.