A method and apparatus for constructing a tubular assembly 40 comprising an inner portion (24) and a further portion (23) surrounding the inner portion. The inner portion (24) comprises reinforcement (37) and the further portion (23) being formed from a strip (50) of material comprising two opposed longitudinal marginal side portions (53). The apparatus comprises an assembly station (220) comprising a wall (253). The apparatus comprises means for advancing the inner portion (21) along a first path (231) extending passed the wall (253), and means for advancing the strip (50) along a second path (232) and causing the strip to encircle the wall (253) and thereby wrap about and surround the inner portion (21). The apparatus further comprises means (321) for introducing resinous binder into the reinforcement (37) as the strip (50) is being wrapped about the inner portion (21).

A method and apparatus for constructing a tubular assembly (24) comprising an inner portion (21) and a further portion (22) surrounding the inner portion, the further portion being formed from a strip (50) of material comprising two opposed longitudinal marginal side portions (53). The apparatus (100) comprises an assembly station (106) having a wall (122). The apparatus (100) comprises means for advancing the inner portion (21) along a first path (111) extending past the wall, and means for advancing the strip (50) along a second path (112) and causing the strip to encircle the wall and thereby wrap about and surround the inner portion (21). The two marginal side portions (53) are disposed in overlapping relation on the side of the wall opposed to the first path (111). The apparatus (100) further comprises a system (131) for affixing the two longitudinal marginal side portions (53) together in overlapping relation to assemble the strip (50) into a tubular configuration about the inner portion (21), whereby the strip in the tubular configuration provides the further portion (22).

A guiding device for guiding a sheet of packaging material (3) in a packaging machine (1) for producing sealed packages (2), said guiding device comprising a plurality of folding rollers defining a passage (31) for said sheet of packaging material (3) and causing a first longitudinal edge (11) of said sheet of packaging material (3) to superimpose to a second longitudinal edge (15) of said sheet of packaging material (3), opposite said first longitudinal edge (11), to define an overlapping area (16) of said first longitudinal edge (11) and said second longitudinal edge (15), said overlapping area having a certain extension, said passage having a longitudinal axis (A), said plurality of folding rollers comprising a group of first folding rollers (32) rotatable around first rotation axes (C) arranged in a common first plane, said plurality of folding rollers further comprising at least one second folding roller (33) rotatable around a second rotation axis (D) arranged in a second plane, different from said first plane, said guiding device further comprising a driving arrangement (34) for moving said at least one second folding roller (33) towards and away from said longitudinal axis (A) of said passage (31) so as to control the extension of said overlapping area (16).

A guiding device for guiding a sheet of packaging material (3) in a packaging machine (1) for producing sealed packages (2), said guiding device comprising a plurality of folding rollers defining a passage (31) for said sheet of packaging material (3) and causing a first longitudinal edge (11) of said sheet of packaging material (3) to superimpose to a second longitudinal edge (15) of said sheet of packaging material (3), opposite said first longitudinal edge (11), to define an overlapping area (16) of said first longitudinal edge (11) and said second longitudinal edge (15), said overlapping area having a certain extension, said passage having a longitudinal axis (A), said plurality of folding rollers comprising a group of first folding rollers (32) rotatable around first rotation axes (C) arranged in a common first plane, said plurality of folding rollers further comprising at least one second folding roller (33) rotatable around a second rotation axis (D) arranged in a second plane, different from said first plane, said guiding device further comprising a driving arrangement (34) for moving said at least one second folding roller (33) towards and away from said longitudinal axis (A) of said passage (31) so as to control the extension of said overlapping area (16).

Methods of making containers are provided, including providing a material sheet having at least two barrier layers and at least two polymer layers, forming the material sheet into a tube, sealing the tube at a seal area, and blow molding the tube to form a container in which the at least two barrier layers form a substantially continuous barrier at the seal area.

Methods of making containers are provided, including providing a material sheet having at least two barrier layers and at least two polymer layers, forming the material sheet into a tube, sealing the tube at a seal area, and blow molding the tube to form a container in which the at least two barrier layers form a substantially continuous barrier at the seal area.

The pipe includes at least one tubular sheath delimiting a passage for circulation of the abrasive material, at least one tensile armor layer externally positioned with respect to the tubular sheath, the armor layer including a plurality of filiform armor elements. It further includes a protective internal layer positioned inside the tubular sheath in the circulation passage, the protective internal layer including an elastomeric matrix and a longitudinal reinforcement assembly embedded in the matrix.

The pipe includes at least one tubular sheath delimiting a passage for circulation of the abrasive material, at least one tensile armor layer externally positioned with respect to the tubular sheath, the armor layer including a plurality of filiform armor elements. It further includes a protective internal layer positioned inside the tubular sheath in the circulation passage, the protective internal layer including an elastomeric matrix and a longitudinal reinforcement assembly embedded in the matrix.

A device for manufacturing circumferentially closed tubular tube bodies, comprising conveying means for conveying the substrate in a conveying direction, and also comprising tube-forming means which are designed to form a web-like substrate, which has a first and a second longitudinal edge, into a tubular form in which, in the circumferential direction, the first and the second longitudinal edge form or delimit a contact region, in particular abutting or overlapping region, which extends in the conveying direction, wherein the tube-forming means effect the shaping of the substrate into the tubular form in a shaping region and comprise welding means for welding the tubular form at a weld circumferential position, first sensor means, which are upstream of the shaping region; in the conveying direction, for detecting the position of the substrate web, setting means for setting the position of the substrate web transversely with respect to the conveying direction, and first control means which are designed to actuate the setting means, taking into consideration the measurement values from the first sensor means, such that the web-like substrate is held in a setpoint position transversely with respect to the conveying direction or such that the web-like substrate is adjusted in the direction of the setpoint position.

A device for manufacturing circumferentially closed tubular tube bodies, comprising conveying means for conveying the substrate in a conveying direction, and also comprising tube-forming means which are designed to form a web-like substrate, which has a first and a second longitudinal edge, into a tubular form in which, in the circumferential direction, the first and the second longitudinal edge form or delimit a contact region, in particular abutting or overlapping region, which extends in the conveying direction, wherein the tube-forming means effect the shaping of the substrate into the tubular form in a shaping region and comprise welding means for welding the tubular form at a weld circumferential position, first sensor means, which are upstream of the shaping region; in the conveying direction, for detecting the position of the substrate web, setting means for setting the position of the substrate web transversely with respect to the conveying direction, and first control means which are designed to actuate the setting means, taking into consideration the measurement values from the first sensor means, such that the web-like substrate is held in a setpoint position transversely with respect to the conveying direction or such that the web-like substrate is adjusted in the direction of the setpoint position.