An optical cable and method for forming an optical cable is provided. The cable includes a cable jacket including an inner surface defining a channel and an outer surface and also includes a plurality of optical fibers located within the channel. The cable includes a seam within the cable jacket that couples together opposing longitudinal edges of a wrapped thermoplastic sheet which forms the cable jacket and maintains the cable jacket in the wrapped configuration around the plurality of optical fibers. The method includes forming an outer cable jacket by wrapping a sheet of thermoplastic material around a plurality of optical core elements. The method includes melting together portions of thermoplastic material of opposing longitudinal edges of the wrapped sheet such that a seam is formed holding the sheet of thermoplastic material in the wrapped configuration around the core elements.

A unit configured to form a tube for producing sealed packages starting from a sheet of packaging material having opening devices pre-applied thereon, comprises at least one guiding assembly configured to interact with the sheet of packaging material to fold it gradually into a tube shape; the guiding assembly comprises a plurality of folding rollers delimiting a passage for the sheet of packaging material and each having a lateral wall configured to cooperate in contact with the sheet of packaging material to control the folding thereof; the folding rollers comprise at least one folding roller having at least one recess on the lateral wall thereof, the recess defining a slot configured to be engaged by the opening devices.

A unit configured to form a tube for producing sealed packages starting from a sheet of packaging material having opening devices pre-applied thereon, comprises at least one guiding assembly configured to interact with the sheet of packaging material to fold it gradually into a tube shape; the guiding assembly comprises a plurality of folding rollers delimiting a passage for the sheet of packaging material and each having a lateral wall configured to cooperate in contact with the sheet of packaging material to control the folding thereof; the folding rollers comprise at least one folding roller having at least one recess on the lateral wall thereof, the recess defining a slot configured to be engaged by the opening devices.

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).

The invention concerns a machine for manufacturing plastic items comprising, in series, along the manufacturing line: a rotatable roll (1) of plastic material in the form of at least one strip; a shaper (4) for forming tubes from said strips and means (5) for longitudinally welding said tubes; means (6) for cutting the tubes transversely, arranged so as to form tube sections (10); means for transferring and depositing said sections in holding and moving means; an oven (8) in which said tube sections move; a first turret (9) supporting moulds; means for processing the tube sections in the first turret; means for blowing a pressurised fluid into the moulds; a second turret (14) for discharging the bottles from said moulds.

A container formed of a common one-piece thermoplastic substrate. The container has an overlapping seam having an overlap magnitude. At a location that is five times the overlap magnitude away from the overlapping seam, the container wall has a container wall Opacity less than about 50%. At a corresponding position along the overlapping sea, the overlapping seam has a seam Opacity that is less than 200% of the container wall Opacity.

A forming shoulder for forming a film tube from a flat film web and a method for producing a forming shoulder. The forming shoulder comprises a shoulder piece and a prism piece which are connected to each other along a forming edge, the shoulder piece having an outer shoulder surface via which the film web can be guided to an entry opening of the prism piece limited by the forming edge, the forming edge being made of at least one metal piece, a plastic shoulder piece and/or a plastic prism piece being molded onto the metal piece.

A forming shoulder for forming a film tube from a flat film web and a method for producing a forming shoulder. The forming shoulder comprises a shoulder piece and a prism piece which are connected to each other along a forming edge, the shoulder piece having an outer shoulder surface via which the film web can be guided to an entry opening of the prism piece limited by the forming edge, the forming edge being made of at least one metal piece, a plastic shoulder piece and/or a plastic prism piece being molded onto the metal piece.

An optical cable and method for forming an optical cable is provided. The cable includes a cable jacket including an inner surface defining a channel and an outer surface and also includes a plurality of optical fibers located within the channel. The cable includes a seam within the cable jacket that couples together opposing longitudinal edges of a wrapped thermoplastic sheet which forms the cable jacket and maintains the cable jacket in the wrapped configuration around the plurality of optical fibers. The method includes forming an outer cable jacket by wrapping a sheet of thermoplastic material around a plurality of optical core elements. The method includes melting together portions of thermoplastic material of opposing longitudinal edges of the wrapped sheet such that a seam is formed holding the sheet of thermoplastic material in the wrapped configuration around the core elements.

An optical cable and method for forming an optical cable is provided. The cable includes a cable jacket including an inner surface defining a channel and an outer surface. The cable includes a seam within the cable jacket that couples together opposing longitudinal edges of a wrapped thermoplastic sheet which forms the cable jacket and maintains the cable jacket in the wrapped configuration around the plurality of optical fibers. The method includes forming an outer cable jacket by wrapping a sheet of thermoplastic material around a plurality of optical core elements. The method includes laser welding together portions of thermoplastic material of opposing longitudinal edges of the wrapped sheet such that a seam is formed holding the sheet of thermoplastic material in the wrapped configuration around the core elements.