A method of processing of a polymer blend is provided. The method includes the step of introducing a polymer material and a secondary polymer material into a barrel of an extruder. A user-selected gas having a supercritical point is injected into the barrel. The user-selected gas is below the supercritical point thereof. The polymer material, the secondary polymer material and the user-selected gas are mixed within the barrel to form a polymer blend. The polymer blend is ejected from the barrel into a mold, pelletizer or the like.

A continuous kneading device including a pair of kneading rotors, capable of increasing mesh between the kneading rotors while also suppressing a kneading load applied to the kneading rotors. The continuous kneading device including a barrel and a pair of kneading rotors housed in the barrel. The kneading rotors rotate in mesh in directions different from each other. Each kneading rotor includes a plurality of kneading flights for kneading a material supplied into the barrel. The material is fed axially from the upstream kneading section to the downstream kneading section to be sequentially kneaded. The kneading flight constituting the downstream kneading section has a rotational outer diameter larger than a rotational outer diameter of the kneading flight constituting the upstream kneading section.

A barrel main body, a sleeve, and a fixing mechanism (a fastening hole and a fastening device) are provided. The barrel main body includes a barrel hole having a cylindrical shape and a slit dividing an inner circumferential surface of the barrel hole. The sleeve having a hollow cylindrical shape is removably incorporated into the barrel hole. The slit includes two cutout surfaces facing each other with a space between. The fixing mechanism brings the inner circumferential surface of the barrel hole into close contact with the sleeve without any gap by narrowing the space between the cutout surfaces and deforming the barrel main body.

The present invention relates to a process for the production of a reinforced polyamide (rP) in an extruder. In this process, a first mixture (M1), a second mixture (M2) and a third mixture (M3) are added into the extruder, and subsequently at least one carbon material is added to obtain a carbon containing polymerizable mixture (cpM) in the extruder. This carbon containing polymerizable mixture (cpM) is polymerized and subsequently devolatilized to obtain the reinforced polyamide (rP). Furthermore, the present invention relates to the reinforced polyamide (rP) obtainable by the inventive process.

A barrel block for a twin-screw extruder constitutes a barrel including a cylinder and has joints at both ends. A first joint includes a first inner joint face on a peripheral edge of a first hole of an insertion hole for screws, and includes a first flank face and a first outer joint face on an outer periphery of the first inner joint face. The first outer joint face is located in the outer periphery of a plurality of first bolt holes. The first outer joint face is more recessed toward a second block end face than the first inner joint face.

An extruder (1) comprising a feed port (10), the feed port is configured to direct material towards a barrel region of an extruder, the feed port comprising a passageway, the passageway arranged to he in communication with the barrel region (11) of the extruder, and the passageway comprises a transverse cross-sectional shape which comprises three substantially rectilinear side surfaces (4a, 4b, 4c) which are arranged substantially orthogonally, and a fourth side (4d) which is non-orthogonally angled relative to two of the side surfaces which are adjacent to the fourth side.

A thermoplastic resin composition, a method for manufacturing the same, and a molded body are provided. The composition includes a polyolefin resin PO, a polyimide resin PA, and a compatibilizer. The composition has a first phase composed of the PA and compatibilizer and/or a reaction product thereof and a second phase composed of the PO and interposed between the first phases. The first phase has a matrix phase composed of the PA and a dispersed phase dispersed in the matrix phase and composed of the compatibilizer and/or a reaction product thereof. The first phase includes a branched phase having branch portions. The method includes melt-kneading the PA and compatibilizer so that a mixing ratio of the compatibilizer is 11% by mass or more but 45% by mass or less per 100% by mass of a total of the PO, PA, and compatibilizer, and melt-kneading an obtained composition and the PO.

Methods of making extruded products that incorporate formulations with various ingredients aside from the typically used corn meal formulations, having different tastes and nutritional benefits while maintaining the desired bulk density, texture, and crunch of random extruded products.

Disclosed is a process for preparation of a propylene-based polymer composition involving the steps of: (a) mixing a propylene-based polymer and a peroxydicarbonate in a mixing device, wherein the mixing takes place at a temperature of 30 C., wherein the peroxydicarbonate is introduced into the mixing process in a dry form; (b) keeping the mixed composition at a temperature of 30 C.; (c) feeding the mixed composition into a melt extruder; (d) homogenizing the mixed composition at a temperature where the propylene-based polymer is in solid state during an average residence time of 6.0 and 30.0 seconds; (e) further homogenizing the mixed composition at a temperature at which the propylene-based polymer is in the molten state; and (f) extruding the homogenized material from a die outlet of the melt extruder followed by cooling and solidification; wherein the steps (a) through (f) are conducted in that order.

The present invention provides a plant based material with high tensile strength, with high E-modulus, which have low water absorption, which can be injection molded, and which can be melted and remolded. The materials of the invention may be composite materials prepared by extrusion of a mixture comprising a) surface modified plant parts consisting of finely divided plant parts O-linked to one or more groups of the structure (I); b) polymethyl methacrylate (PMMA); c) thermoplastic polymer.