Tube with use in pharmaceutical and food sector

摘要

The tube (1) comprises a layer structure consisting of an inner layer (2), which is resistant against a medium to be conveyed, a first elastomer intermediate layer (3), which forms a durable adhesive bond with the inner layer and is directly connected with the inner layer, first and second embedded strength support layers (4, 7) and an abrasion-resistant elastomer outer layer. The first strength support layer is directly connected with the first intermediate layer, where further both strength support layers are separated from each other by a second elastomer intermediate layer (5). The tube (1) comprises a layer structure consisting of an inner layer (2), which is resistant against a medium to be conveyed, a first elastomer intermediate layer (3), which forms a durable adhesive bond with the inner layer and is directly connected with the inner layer, first and second embedded strength support layers (4, 7) and an abrasion-resistant elastomer outer layer. The first strength support layer is directly connected with the first intermediate layer, where further both strength support layers are separated from each other by a second elastomer intermediate layer (5). The inner layer is made of soot-free plastic, contains fluorine-containing plastic and pigment-free plastic, is present in the form of foil or is a seamless extruded inner tube, is surface-active inside its contact side to the intermediate layer connected with it, and is etched or roughened and smoothed. Inorganic or organic pigments are incorporated into the inner layer, are simultaneously distributedly incorporated inside the plastic, are white pigments, and have a quantity of 0.2-0.5 wt.% related to the total mass of the inner layer. The strength of the inner layer is 0.1-1 mm. The intermediate layers and/or the outer layer comprise rubber components and mixture ingredients based on vulcanized rubber mixture. The strength support layers consist of textile mesh based on natural and/or artificial fibers, steel mesh or glass mesh. A coil made of metal or plastic with metal-like properties is arranged in the area of the second intermediate layer. The area of the second intermediate layer is free from the coil. The outer layer is smoothly, curly or constrictedly formed.