An apparatus configured to apply protective sheeting of polymer material around a cutback on a pipeline has a frame located close to a pipeline extending along a longitudinal axis; a manipulator fitted to the frame and having a guide system movable between a rest position at a distance from the pipeline, and a work position in which the guide system is fitted around the pipeline; and an extrusion die movable selectively along the guide system and around the pipeline to supply and apply protective sheeting around the cutback on the pipeline.

A thin ribbon spirally wound polymer conduit and method of forming, wherein a helical reinforcing bead is interposed adjacent overlapping layers of ribbon. Further, a method of continuously forming spirally wound conduit wherein a sacrificial layer, preferably having a different base polymer to that of the conduit, is first applied to the former before the conduit is formed overtop.

A thin ribbon spirally wound polymer conduit and method of forming, wherein a helical reinforcing bead is interposed adjacent overlapping layers of ribbon. Further, a method of continuously forming spirally wound conduit wherein a sacrificial layer, preferably having a different base polymer to that of the conduit, is first applied to the former before the conduit is formed overtop.

This invention relates to a medical tube comprises an elongate conduit having a first opening, a second opening, a longitudinal axis, a lumen extending between the first opening and the second opening along the longitudinal axis, and a corrugated wall, formed from an extruded material, extending between the first opening and the second opening and surrounding the lumen. The wall is stiffer in a first length of the conduit adjacent the first opening than in a second length of the conduit adjacent the second opening. The variable stiffness of the tube wall can improve the thermal profile of the tube as well as improve drain-back of condensation into a humidifier providing humidified gas to the tube.

An apparatus for non-contact monitoring of travelling objects being produced in an unguided linear process comprising: a toroidal structure with an open aperture defining a measuring zone, a source of radiation configured by a plurality of radiation devices circumferentially disposed within the measuring zone whereby the radiation source emits rays that generate a planar screen of radiation across the object circumferentially to envelop the object, a plurality of circumferentially disposed recording devices for receiving radiation from the radiation devices following interception of the rays by the objects, and analysis means for analyzing imaging information of the emitted radiation recorded by the recording devices thereby to provide a measure of the physical characteristics of the object.

The method for forming from a round shaped cylinder to a square shaped cylinder or flat sheet which can be inserted in a square or rectangular shape metal pipe includes initiating turning of a heated mandrel, extruding heated polymer, wrapping while compressing a first layer of heated polymer or mesh, disposing a mesh or polymer layer over the cylinder encapsulating the cylinder on the turning mandrel while simultaneously laying a second layer of heated polymer over the turning mandrel and compressing the layer of heated polymer into the mesh layer and the mesh layer into the first layer of heated polymer simultaneously, and repeating the layering of the heated polymer and mesh layer until a desired wall thickness is reached.

The method for forming from a round shaped cylinder to a square shaped cylinder or flat sheet which can be inserted in a square or rectangular shape metal pipe includes initiating turning of a heated mandrel, extruding heated polymer, wrapping while compressing a first layer of heated polymer or mesh, disposing a mesh or polymer layer over the cylinder encapsulating the cylinder on the turning mandrel while simultaneously laying a second layer of heated polymer over the turning mandrel and compressing the layer of heated polymer into the mesh layer and the mesh layer into the first layer of heated polymer simultaneously, and repeating the layering of the heated polymer and mesh layer until a desired wall thickness is reached.

Methods of coating a base tube are disclosed. Various methods include passing a hollow base tube into a coating die while maintaining a chamber pressure outside the hollow base tube that is lower than a pressure within an inner lumen of the hollow base tube. Such methods can include extruding coating material onto the hollow base tube to form a coated hollow tube by delivering coating material into the coating die. Vacuum may be formed within the coating die proximate a point of impingement where the coating material is applied to the hollow base tube.

Methods of coating a base tube are disclosed. Various methods include passing a hollow base tube into a coating die while maintaining a chamber pressure outside the hollow base tube that is lower than a pressure within an inner lumen of the hollow base tube. Such methods can include extruding coating material onto the hollow base tube to form a coated hollow tube by delivering coating material into the coating die. Vacuum may be formed within the coating die proximate a point of impingement where the coating material is applied to the hollow base tube.

The present invention relates to an ultra-high molecular weight polyethylene enhanced high-flow delivery high-pressure hose and manufacturing method thereof. The hose includes an outer rubber layer, a reinforcing layer and an inner rubber layer from outside to inside. A thickness of the outer rubber layer is 0.3-6.0 mm. A thickness of the reinforcing layer is 1.0-5.0 mm. A thickness of the inner layer is 0.3-5.0 mm. The outer rubber layer and the inner layer are obtained by co-extruding onto the reinforcing layer using a coextrusion equipment. The manufacturing method includes the following steps: rubber mixing, preparing the reinforcing layer, producing a finished product, vulcanizing and pressure testing. The hose of the invention has the advantages of light weight, good flexibility, abrasion resistance, corrosion resistance and good weather fastness. The hose can be connected through a plurality of standard buckles, which is easy to wind up, easy to assemble and disassemble.