A customizable polyamide polymer, in particular Nylon 66, Nylon 6, and copolyamides, having a high molecular weight, excellent color, and low gel content is disclosed. In particular, disclosed is a polymer having a relative viscosity greater than 50 as measured in a 90% strength formic acid solution; consistent viscosity with a standard deviation of less than 1; a gel content no greater than 50 ppm as measured by insolubles larger than 10 micron; an optical defect content of less than 2,000 parts per million (ppm) as measured by optical control system (OCS). The polymer can be made into monofilaments or a multifilament yarn.

Also disclosed is a process of producing the polymer using in-line vacuum finishing technology in the absence of steam or other gases in the second, or post condensation, step of the polymer process.

A device, to homogenise plastics material melts, has a homogenising element with a plurality of flow channels, which differ with respect to at least one feature from the group length, cross sectional area and cross sectional shape. When flowing through the homogenising element, the plastics material melt is divided into a plurality of part streams, which, in each case, flow through an associated flow channel. When leaving the respective flow channel the part streams have different flow speeds so the plastics material melt is expanded and sheared on transition to a uniform flow. As a result, a homogenisation of the plastics material melt takes place in a simple, efficient and effective manner.

A method for processing plastics material, in particular thermoplastic material, such as plastics recycling material and/or plastics waste, is disclosed comprising the following steps: supplying the plastics material into a screw-conveyor machine); supplying an additive for converting organic chlorides into inorganic chlorides into the screw-conveyor machine; plasticizing the supplied plastics material with the screw-conveyor machine to form a plastics melt, and mixing the plastics melt with the supplied additive with the screw-conveyor machine to form a mixture, wherein at least some of the organic chlorides contained in the plastics melt are converted into inorganic chlorides with the additive. A corresponding device for processing plastics material, in particular thermoplastic material, such as plastics recycling material and/or plastics waste, using a screw-conveyor machine is also disclosed.

A method of producing a film in accordance with an aspect of the present invention includes: a first kneading and forming step of forming a composition obtained by kneading a polyolefin resin and a plasticizer; a stretching step of stretching the composition; a composition cleaning step of immersing the composition in a cleaning solvent and removing the plasticizer; a separation step of separating, from the cleaning solvent which has been used in the cleaning step, the plasticizer which has been eluted in the cleaning solvent; and a second kneading and forming step of forming a composition obtained by kneading a polyolefin resin and the plasticizer which has been separated in the separation step.

A method of producing a piezoelectric nanofiber web, includes: dissolving polylactic acid in a solvent, thus preparing a spinning solution; and electrospinning the spinning solution, yielding a nanofiber web, wherein at least 80% of a monomer for the polylactic acid comprises an L-isomer or a D-isomer, and wherein the solvent is a mixture comprising chloroform and one of N,N-dimethylacetamide(DMAc), N,N-dimethylformamide(DMF) and dimethylsulfoxide(DMSO).

A rubber extruding machine 1 comprises two or more rubber extruders 2, an extrusion head 3 to which the rubber extruders 2 are connected, and a decompression device 4. A pre-former 6 of the extrusion head comprises: rubber flow paths 20 including respective flow paths 22 through which the extruded unvulcanized rubber compounds G pass respectively; a merging position P at which the rubber flow paths 20 are confluent; and a vent channel 21 whose one end communicates with the merging position P and the other end is connected to the decompression device.

A thermally conductive sheet having good thermal conductivity in the thickness direction and a method for producing a thermally conductive sheet. A thermally conductive sheet having a surface with an L* value in a L*a*b color system of 29 or more and 47 or less is obtained by preparing a thermally conductive composition comprising a curable resin composition, thermally conductive fibers, and thermally conductive particles, extrusion-molding the thermally conductive composition to obtain a columnar cured product, and cutting the columnar cured product in a direction almost perpendicular to a length direction of a column to a predetermined thickness.

A method of producing a heat conductive sheet includes: a step (A) of dispersing a fibrous filler and a spherical filler in a binder resin to prepare a heat conductive sheet-forming composition; a step (B) of forming a molded block using the prepared heat conductive sheet-forming composition; a step (C) of slicing the formed molded block to a desired thickness to form a sheet; and a step (D) of pressing the sliced surface of the formed sheet, the sliced surface being pressed such that the thermal resistance value of the sheet after pressing becomes lower than the thermal resistance value of the sheet before pressing.

A gear pump extruding machine for extruding a rubber material includes a screw feeder, a gear pump provided on an outlet side of the screw feeder, and a die disposed on an outlet side of the gear pump. The gear pump extruding machine further includes protrusive members that are movable forward and rearward to protrude into a fluid communication channel that keeps the screw feeder and the gear pump in fluid communication with each other, to thereby change the volume of the fluid communication channel. An actuator is provided for moving the protrusive members to protrude into the fluid communication channel, and is controlled by a controller. When the volume of the fluid communication channel is changed, the rate at which the rubber material is extruded is adjusted to prevent the rubber material from being warmed excessively at all times.

A method and system for manufacturing a multi-lumen device that includes extruding a first layer of material to form an elongate body with a first lumen and a second lumen, the elongate body having a length of at least 100 feet, depositing a mesh layer over the first layer of material along the entire length of the elongate body, and extruding a second layer of material over the mesh layer along at least a portion of the length of the elongate body. The length of at least 100 feet may be considered a first length, the method further comprising cutting the elongate body into a plurality of shortened elongate bodies having a usable length, such as between approximately two feet and approximately six feet.