The method of making a pellet comprising wood pulp fiber and thermoplastic polymer, comprising extruding an extrudate comprising 10 to 50 weight % wood pulp fiber and 45 to 85 weight % thermoplastic polymer through a die, cutting a pellet from the extrudate, removing the pellet from the extrudate with water having a temperature less than the extrudate, filtering the pellet from the water. In one embodiment the wood pulp fiber in the pellet has a moisture content of 1% or less. In one embodiment the wood fiber does not swell.

The present disclosure relates to a method of forming a composition including forming a polymer melt in a melt feeder. The melt feeder is coupled with an extruder. The method includes introducing the polymer melt from the melt feeder to the extruder at a first location of the extruder. The method includes extruding the polymer melt through the extruder via a plurality of intermeshing screws disposed within the extruder. The method includes introducing a coupling agent to the extruder at a second location of the extruder.

A scintillator stack includes a light-transportation layer and a scintillator layer. The scintillator stack can be included in a scintillator device. The scintillator stack can be made using a co-extrusion method.

Melt pumps for producing synthetic granules, extruded profiles or molded parts are disclosed. One disclosed example melt pump for building up pressure at a fluid medium is to be used for pressing the medium through a tool. The example melt pump includes a compressor that comprises an inlet and an outlet opening, and at least two worm conveyors disposed in a common housing, where worm flights provided on the worm conveyors are configured in such a manner that a force feed of the medium occurs and where the worm conveyors are drivable by their own drive.

Systems for producing M bundles of filaments, wherein M>1, include N extruders. M spin stations, and a processor, wherein N>1. Each extruder includes a polymer having a color, hue, luster, and/or dyability characteristic, which are different from each other. Each spin station produces N bundles of filaments that form a yarn. Each spin station comprises N spinnerets through which filaments are spun from molten polymers streams received by the respective spin station and N spin pumps upstream of the N spinnerets for the respective spin station. Each spin pump is paired with one of the Nextruders. The processor is in electrical communication with the N*M spin pumps and is configured to adjust the volumetric flow rate of the polymers pumped from each spin pump to achieve a ratio of the polymers to be included in the yarn from each spin station.

A flexible pipe body and methods of producing a flexible pipe body are disclosed. The method may include providing a tubular length of polymeric material for forming a polymeric layer of flexible pipe body; providing a strength layer radially outwards of the polymeric layer; and treating the polymeric layer with a non-ambient temperature and pressure.

A process for preparing a reinforced and reactive thermoplastic composition having a continuous phase based on a thermoplastic polymer and dispersed therein is a discontinuous phase based on a reactive reinforcing agent that may be immiscible with the thermoplastic polymer is provided. A composition obtained by this process is also provided. The reinforcing agent is selected from the group consisting of epoxy resins, polyorganosiloxanes having SiH functional group(s), diisocyanates or polyisocyanates and mixtures thereof, comprises a grafting, a branching and/or a crosslinking, that are carried out in situ, by reactive compounding of these phases with a shear rate greater than 10.sup.2 s.sup.1, of the reinforcing agent onto the chain of the thermoplastic polymer, so that the discontinuous phase is dispersed homogeneously in the continuous phase in the form of nodules having a number-average size of less than 5 m.

The method of making a pellet comprising wood pulp fiber and thermoplastic polymer, comprising extruding an extrudate comprising 10 to 50 weight % wood pulp fiber and 45 to 85 weight % thermoplastic polymer through a die, cutting a pellet from the extrudate, removing the pellet from the extrudate with water having a temperature less than the extrudate, filtering the pellet from the water. In one embodiment the wood pulp fiber in the pellet has a moisture content of 1% or less. In one embodiment the wood fiber does not swell.

A method of forming a confined crystallization multilayer film includes coextruding a plurality of first polymer layers and a plurality of second polymer layer to form a multilayer film wherein each first polymer layer is sandwiched between second polymer layers and axially orienting the multilayer film at a temperature below the melting temperature (T.sub.m) of the second polymer layer and to a thickness such that each first polymer layer forms a high aspect ratio substantially crystalline lamellae.

Techniques recycle plastics in multiple successive process steps. A polymer, preferably a recyclable material, is melted using a discharge extruder, filtered using a first filter device under a positive pressure atmosphere, filtered and degassed using a degassing device, and discharged using a discharge extruder. The degassing device has at least one filter element and a vacuum chamber with a negative pressure atmosphere for filtering and degassing purposes, wherein the plastic melt can be conducted into the negative pressure atmosphere of the vacuum chamber through the filter element.