A system and method for forming 3D printed structures includes printing an outer shell portion and filling an interior of the outer shell portion to form an inner portion. The outer shell portion and inner portion may have differing material properties. The outer shell portion may be anchored to the base component.

A system and method for forming 3D printed structures includes printing an outer shell portion and filling an interior of the outer shell portion to form an inner portion. The outer shell portion and inner portion may have differing material properties. The outer shell portion may be anchored to the base component.

A multilayer structure for transporting or storing gas or for exploiting oil or gas deposits under the sea, including, from the inside to the outside, at least one sealing layer and at least one composite reinforcing layer, the innermost composite reinforcing layer being welded to the outermost adjacent sealing layer, the sealing layers of a composition including at least one semi-crystalline thermoplastic polymer, the Tm of which is less than 280° C., wherein at least one of the composite reinforcing layers of a fibrous material in the form of continuous fibers impregnated with a composition including at least one thermoplastic polymer, the thermoplastic polymer having a Tg greater than the maximum temperature of use of the structure (Tu), with Tg≥Tu+20° C., Tu being greater than 50° C., and a multilayer structure selected from a reservoir, a pipe or a tube for transporting or storing hydrogen being excluded.

A multilayer structure for transporting or storing gas or for exploiting oil or gas deposits under the sea, including, from the inside to the outside, at least one sealing layer and at least one composite reinforcing layer, the innermost composite reinforcing layer being welded to the outermost adjacent sealing layer, the sealing layers of a composition including at least one semi-crystalline thermoplastic polymer, the Tm of which is less than 280° C., wherein at least one of the composite reinforcing layers of a fibrous material in the form of continuous fibers impregnated with a composition including at least one thermoplastic polymer, the thermoplastic polymer having a Tg greater than the maximum temperature of use of the structure (Tu), with Tg≥Tu+20° C., Tu being greater than 50° C., and a multilayer structure selected from a reservoir, a pipe or a tube for transporting or storing hydrogen being excluded.

An apparatus and method for post-extrusion filling and closing of an extrudate includes a feeder arranged in relation to an extruded rope of material flowing from an extrusion die of an extruder, wherein the rope of material has an opening that can receive a filler material. The feeder deposits the filler material into the opening of the rope of material as the rope of material flows by the feeder. A former receives the rope of material after the feeder has deposited the filler material into the opening of the rope. The former shapes the rope of material and close a portion or all of the rope around at least a portion of the deposited filler material to retain the filler material within the rope. A cutter may axially cut the rope to form the opening. A finisher may cut the shaped rope into portions containing the deposited filler material.

The method for extruding and labeling a packaging tube comprises the following successive steps: a) forming a partially or totally tubular label from a film in a shaper; b) inserting the label into a calibration element; c) extruding a tubular body at the concave-face side of the label in an extrusion head; d) bringing the outer face of the extruded tubular body into contact with the concave face of the label. In the method, the label comprises at least one layer of which the melting temperature is at least 20° C. higher than the melting temperature of the extruded tubular body. A first pressure difference is formed in the extruded tube with an air jet.

The invention also relates to a device for implementing said method and to a tube obtained by said method.

Dialysis is enhanced by using nanoclay sorbents to better absorb body wastes in a flow-through system. The nanoclay sorbents, using montmorillonite, bentonite, and other clays, absorb significantly more ammonium, phosphate, and creatinine, and the like, than conventional sorbents. The montmorillonite, the bentonite, and the other clays may be used in wearable systems, in which a dialysis fluid is circulated through a filter with the nanoclay sorbents. Waste products are absorbed by the montmorillonite, the bentonite, and the other clays and the dialysis fluid is recycled to a patient's peritoneum. Using an ion-exchange capability of the montmorillonite, the bentonite, and the other clays, waste ions in the dialysis fluid are replaced with desirable ions, such as calcium, magnesium, and bicarbonate. The nanoclay sorbents are also useful for refreshing a dialysis fluid used in hemodialysis and thus reducing a quantity of the dialysis fluid needed for the hemodialysis.

A method is disclosed for additively manufacturing a composite structure. The method may include coating a continuous strand with a matrix, discharging a composite tubular structure made from the coated continuous strand, and exposing the matrix in the composite tubular structure to light to cure the matrix during discharging. The method may also include depositing a material layer onto an internal surface of the composite tubular structure as the composite tubular structure is being discharged, and wiping a squeegee over the material layer.

It is provided a WPC extrusion profile comprising a WPC material, in which plant fibers are embedded in a plastic matrix, wherein the WPC material has a content of naturally growing plant fibers of between 30 and 75 wt-%, and the WPC extrusion profile includes at least one foam-filled hollow chamber. The at least one hollow chamber of the WPC extrusion profile is completely filled up with a foam, in particular a closed-pore foam. The foam includes or consists of a plastic material of the same type of plastic as the matrix of the WPC material. The foaming is effected by using a physically acting blowing agent, in particular CO.sub.2, wherein the density of the foam is less than 0.4 g/cm.sup.3 and the average cell size of the foam has a mean diameter of less than 0.4 mm.

In a method for producing at least a single-walled tubular thermoplastic body in a machine, a nozzle head extrudes at least one tubular preform. The preform is expanded to a predefined dimension in a transverse direction and to a predefined shape in an expansion process using an expanding mandrel, the preform remaining open at the top and bottom. When the at least one preform has cooled off, the expanding mandrel is changed into a non-expanded state and the at least single-walled tubular body is removed from the machine.