Abstract: A multilayer tube, particularly for fluids, includes a sheath made of fluorinated polymers which is located in an innermost layer, which is adapted to be in contact with a circulating fluid, and is constituted by coupling a first, nonconducting material to a second, black-pigmented material that is electrically at least antistatic in the form of one or more continuous strips. The sheath has a smooth internal surface and is reinforced with external layers that are predominantly made of rubber.

Abstract: A multilayer tube, particularly for chemical and food-related fluids, which includes, in succession from the inside outward a first layer constituted by a tubular sheath that is at least externally corrugated and which defines the duct for the fluid. The tube further includes at least one second layer, which has an inner layer, chosen from between a rubberized fabric and an elastomeric material with textile reinforcement, which is arranged on the first layer, and an outer covering which is arranged on the inner layer.

Abstract: A multilayer tube which includes, in succession from inside outward: an inner layer constituted by a tubular sheath which defines a passage duct for a fluid and is corrugated at least externally, thus defining troughs, a protective layer for the inner layer and which follows its corrugated shape, and a helix wound on the protective layer and positioned on a bottom of the troughs, and an outer layer, in which the helix is embedded.

Abstract: A multilayer tube, particularly for fluids, includes a sheath made of fluorinated polymers which is located in an innermost layer, which is adapted to be in contact with a circulating fluid, and is constituted by coupling a first, nonconducting material to a second, black-pigmented material that is electrically at least antistatic in the form of one or more continuous strips. The sheath has a smooth internal surface and is reinforced with external layers that are predominantly made of rubber.

Abstract: A multilayer tube, particularly for chemical and food-related fluids, which includes, in succession from the inside outward a first layer constituted by a tubular sheath that is at least externally corrugated and which defines the duct for the fluid. The tube further includes at least one second layer, which has an inner layer, chosen from between a rubberized fabric and an elastomeric material with textile reinforcement, which is arranged on the first layer, and an outer covering—which is arranged on the inner layer.

Abstract: A multilayer containment and protection tube for conduits, cables and the like, includes an inner layer made of polymeric material, which is electrically at least antistatic, with a smooth internal surface, which forms a duct for supporting conduits or cables. The tube further includes one or more intermediate layers of electrically at least antistatic reinforcement, an outer layer made of electrically at least antistatic polymeric material, and a covering and finishing layer, which is electrically at least antistatic.

Abstract: A multilayer containment and protection tube for conduits, cables and the like, includes an inner layer made of polymeric material, which is electrically at least antistatic, with a smooth internal surface, which forms a duct for supporting conduits or cables. The tube further includes one or more intermediate layers of electrically at least antistatic reinforcement, an outer layer made of electrically at least antistatic polymeric material, and a covering and finishing layer, which is electrically at least antistatic.

Abstract: A multilayer tube, particularly for fluids is provided with an internally hollow shape and includes a co-extruded sheath made of fluorinated polymers such as FEP, MFA, PFA, ECTFE and PTFE, located in the innermost layer. The sheath is constituted by an internal substrate made of non-pigmented virgin material and by an external substrate made of pigmented material.

Abstract: A tube for hot food fluids includes an inner layer made of hydrogenated nitrile rubber (HNBR), one or more intermediate layers, and an outer covering layer made of elastomeric material. For example, the outer covering layer could be made of HNBR. One or more of the intermediate reinforcement layers include at least one textile reinforcement layer that is resistant to high temperatures. One or more of the intermediate reinforcement layers may further include two layers of textile reinforcement resistant to high temperatures, with the interposition of a filler layer made of elastomeric material.

Abstract: A multilayer tube for industrial systems for the production and/or treatment of chemical compounds, in fluid form, comprising a plurality of layers, of which at least one internal layer forming the duct for the fluid, an electrically conducting layer external to the internal layer, and a protection and finishing layer of the electrically conducting layer which it covers, forming the outer surface of the multilayer tube. The protection layer has a matrix made of electrically insulating material penetrated by electrically conducting bridges being discrete, mutually electrically insulated from the matrix and scattered substantially uniformly within it. The bridges are in electrical contact with the electrically conducting layer and facing the external surface to form an electrical connection between the electrically conducting layer and the outside of the multilayer tube.

Abstract: The machine for producing vulcanized rubber tubes comprises two mutually opposite head sections, each having a base that supports two spindles. At least a first one of the two head sections has motorized spindles. A corresponding tubular core is rotated constantly, during operation, between the mutually opposite spindles of the two head sections and is supported, along its span, by supporting elements that are fixed to a supporting frame interposed between the two head sections. The two motorized spindles connected to the first head section are each supported together with a respective drive unit on a first slider that is movably coupled to the corresponding base. The slider is inclined with respect to a horizontal plane such that its upper part is exposed frontally to the operator.

Abstract: The machine for manufacturing vulcanized-rubber tubes has a pair of heads arranged oppositely with respect to mandrels which rotate two or more tubular cores, supported by supporting elements with fixed rollers on a supporting frame. The tubular cores are contained in a thermally insulated box-like container, wrapped in the tubes to be vulcanized and unloaded by transfer means. The container has heads for supplying electrical power to the cores. Devices are provided for removing the cores from the container. The machine also has a carriage which can move along guides which are parallel to the cores, and a mechanism for wrapping the cores simultaneously with spirals of the materials to be used to manufacture tubes.

Abstract: The machine for manufacturing vulcanized-rubber tubes has a pair of heads arranged oppositely with respect to mandrels which rotate two or more tubular cores, supported by supporting elements with fixed rollers on a supporting frame. The tubular cores are contained in a thermally insulated box-like container, wrapped in the tubes to be vulcanized and unloaded by transfer means. The container has heads for supplying electrical power to the cores. Devices are provided for removing the cores from the container. The machine also has a carriage which can move along guides which are parallel to the cores, and a mechanism for wrapping the cores simultaneously with spirals of the materials to be used to manufacture tubes.