A flexible tube production apparatus includes a die composed of: a cylindrical inner die having an outer face in which a groove is formed; a tubular member that is housed inside the inner die, and has a through-hole that allows a blade wire to be inserted from one end to the other end thereof; and an outer die that surrounds the inner die such that a predetermined gap is generated between itself and the outer face of the inner die, and has an extrusion hole that extrudes the resins having been supplied to the gap, onto the outer face of the blade wire that is fed from the other end of the tubular member. A resin supply portion supplies a first resin and a second resin to the die while the motor rotates the inner die about a center axis.

A flexible tube production apparatus includes a die composed of: a cylindrical inner die having an outer face in which a groove is formed; a tubular member that is housed inside the inner die, and has a through-hole that allows a blade wire to be inserted from one end to the other end thereof; and an outer die that surrounds the inner die such that a predetermined gap is generated between itself and the outer face of the inner die, and has an extrusion hole that extrudes the resins having been supplied to the gap, onto the outer face of the blade wire that is fed from the other end of the tubular member. A resin supply portion supplies a first resin and a second resin to the die while the motor rotates the inner die about a center axis.

The invention comprises a peelable membrane for resealably closing a metal end comprising an outer layer, a tacky layer, and a heat seal layer. The heat seal layer is permanently sealed to the metal end to cover at least one opening in the metal end. The tacky layer causes the peelable membrane to be resealable onto the metal end.

The invention relates to a multilayer plastic film, in particular a multilayer plastic composite film, preferably a multilayer plastic packaging film, based on plastic recyclate (recycled plastic), in particular based on plastic recyclate originating from waste, with a plastic recyclate content of at least 80% by weight, based on the plastic film, and to its use, in particular as packaging material. The plastic recyclate is preferably post-consumer plastic recyclate (PCR plastic recyclate), in particular PCR recycled films.

The continuity of a functional layer of a web (32, 60, 78) is assessed by forwarding the web, detecting (42, 63) the presence of the functional layer and a discontinuity and/or a thin region in the functional layer, and generating a signal in response to the discontinuity and/or thin region. The functional layer comprises a detectable component (360) in a thermoplastic composition. The detecting is carried out by a machine vision system capable of detecting the detectable component (360) in the functional layer. The detectable component (360) can be active or passive. Also included are systems for carrying out the process.

This invention relates in general to a multilayer tube and methods of making the same. In particular, this invention relates to a multilayer tube used as a riser, such as those that may be connected to shutoff or “stop” valve on one end and a plumbing hook-up to the other end. The multilayer tube comprises a first inner polymer layer and a second outer polymer layer, wherein the first and second polymer layers are not substantially bonded to each other. To facilitate use, the tube may additionally comprise one or more overmolded components, such as pipe connectors, plumbing connections, plumbing fittings, valve connectors and appliance connectors. The layers are not substantially bonded.

This invention relates in general to a multilayer tube and methods of making the same. In particular, this invention relates to a multilayer tube used as a riser, such as those that may be connected to shutoff or “stop” valve on one end and a plumbing hook-up to the other end. The multilayer tube comprises a first inner polymer layer and a second outer polymer layer, wherein the first and second polymer layers are not substantially bonded to each other. To facilitate use, the tube may additionally comprise one or more overmolded components, such as pipe connectors, plumbing connections, plumbing fittings, valve connectors and appliance connectors. The layers are not substantially bonded.

An extruder for multi-lumen tubular products with multi-coronal arrangement comprises a main body (2) defining a passage cavity (2a) and an average outflow direction (2b), as well as an input surface (3) and an exit surface (4) respectively formed on opposite faces of the main body (2) and defining respective entry areas afferent to and efferent from the passage cavity (2a); the extruder further comprises an expansion portion (4a) associated with the exit surface (4) and adapted to mutually orient spontaneous expansive flows of said extrusion material through the exit surface (4) in reciprocal directions of mutual intersection.

An extruder for multi-lumen tubular products with multi-coronal arrangement comprises a main body (2) defining a passage cavity (2a) and an average outflow direction (2b), as well as an input surface (3) and an exit surface (4) respectively formed on opposite faces of the main body (2) and defining respective entry areas afferent to and efferent from the passage cavity (2a); the extruder further comprises an expansion portion (4a) associated with the exit surface (4) and adapted to mutually orient spontaneous expansive flows of said extrusion material through the exit surface (4) in reciprocal directions of mutual intersection.

Annular manifold for an extrusion parison head for manufacturing a tubular moulding from a thermoplastic material includes an accommodation body with a first accommodation chamber with an inner surface, a first distribution sleeve with an outer surface, which has a distribution groove, wherein the first distribution sleeve is accommodated in the first accommodation chamber, as well as an annular first distribution chamber, which is formed between the inner surface of the first accommodation chamber and the outer surface of the first distribution sleeve, and which ends in an annular gap opening, wherein the outer surface of the first distribution sleeve has a single helical distribution groove with more than one winding and less than 1.25 windings.