A multi-screw kneader that exhibits an extensional flow function before and behind small holes of a disk-shaped segment having the small holes and a method for producing a nano-composite using the multi-screw kneader and a disk-shaped segment to be used therein. The multi-screw kneader includes a plurality of kneading screws and a disk-shaped segment in a barrel. The disk-shaped segment partitions the inside of the barrel downstream a part for charging a kneading material and includes a plurality of shaft penetrating parts through which rotating shafts of the kneading screws rotatably pass and a large number of small holes punched in a periphery of these shaft penetrating parts and serving as flow channels of the kneading material. The nano-composite production includes charging nanoparticles as a resin additive using the multi-screw kneader. The disk-shaped segment includes the shaft penetrating parts and the large number of the small holes.

A multi-screw kneader that exhibits an extensional flow function before and behind small holes of a disk-shaped segment having the small holes and a method for producing a nano-composite using the multi-screw kneader and a disk-shaped segment to be used therein. The multi-screw kneader includes a plurality of kneading screws and a disk-shaped segment in a barrel. The disk-shaped segment partitions the inside of the barrel downstream a part for charging a kneading material and includes a plurality of shaft penetrating parts through which rotating shafts of the kneading screws rotatably pass and a large number of small holes punched in a periphery of these shaft penetrating parts and serving as flow channels of the kneading material. The nano-composite production includes charging nanoparticles as a resin additive using the multi-screw kneader. The disk-shaped segment includes the shaft penetrating parts and the large number of the small holes.

A multi-screw kneader is configured to exhibit an extensional flow function before and behind holes of a disk-shaped segment and a method for producing a nano-composite uses the multi-screw kneader. The multi-screw kneader includes a plurality of kneading screws and the disk-shaped segment in a barrel. The disk-shaped segment partitions the inside of the barrel downstream of a part for supplying a kneading material and includes shaft receiving parts through which rotating shafts of the kneading screws are to rotatably pass and the holes are defined in a periphery of the shaft penetrating parts and are configured to serve as flow channels of the kneading material. The method for producing the nano-composite includes charging nanoparticles as a resin additive using the multi-screw kneader.

A multi-screw kneader is configured to exhibit an extensional flow function before and behind holes of a disk-shaped segment and a method for producing a nano-composite uses the multi-screw kneader. The multi-screw kneader includes a plurality of kneading screws and the disk-shaped segment in a barrel. The disk-shaped segment partitions the inside of the barrel downstream of a part for supplying a kneading material and includes shaft receiving parts through which rotating shafts of the kneading screws are to rotatably pass and the holes are defined in a periphery of the shaft penetrating parts and are configured to serve as flow channels of the kneading material. The method for producing the nano-composite includes charging nanoparticles as a resin additive using the multi-screw kneader.

The invention relates to a method and a processing plant (1) for plastic material, for the recycling thereof. To this end, the processing plant (1) comprises a feed device (4), a processing unit (2) having a comminuting device (5) and a conveying device (6) adjoining the comminuting device (5), and an extrusion device (3) having an extruder screw (21). During its conveying movement along a first conveying section (9) toward a transfer region (8) by means of the conveying device (6), the comminuted plastic material is heated to a transfer temperature with a mean temperature value, which falls into the range of the softening temperature of the plastic material. In the transfer region (8), the comminuted plastic material is transferred to the extrusion device (3).

An apparatus for continuously producing chemically-modified cellulose, the apparatus having a first mechanism for transporting a fine-powder cellulose fiber starting material and a hydrophobizing chemical substance, a specific extruder, a solvent tank connected to the extruder, and a dryer connected to the solvent tank, and a method for continuously producing chemically-modified cellulose, the method having a step of washing, in the solvent tank, chemically-modified cellulose having been produced out of the fine-powder cellulose fiber starting material and the hydrophobizing chemical substance in the extruder, and then drying the chemically-modified cellulose in the dryer, in order to remove any unreacted hydrophobizing chemical substance.

Disclosed are plastic products from a recycled plastic mix of unidentified, unclean and unsorted mixed plastic waste made with a system comprising thermal and mechanical processing of the recycled plastic waste using continuous extrusion foaming, two-phase cooling, continuous metering of the pulling strength and automatic adjustment of the pulling speed and extrusion speed.

A method for producing an extruder screw, the method including a. sequentially sliding screw segments onto a tensioned longitudinally extending cylindrical tension rod, the screw segments including: i. radially protruding functional elements configured to feed, mix and/or knead an extrudate, ii. a through bore oriented in a longitudinal direction of the extruder screw (1), and iii. an inner spline extending in the through bore in the longitudinal direction of the extruder screw; b. inserting cylindrical coupling pieces including an outer coupling piece spline into the through bore with positive form locking so that the cylindrical coupling pieces connect adjacent screw segments torque proof; and c. axially supporting the screw segments at a tip of the tension rod and clamping the screw segments against the tip of the tension rod, wherein the inner spline extends over an entire length of the through bore.

The disclosure relates to various measures for increasing the cooling effect on a planetary roller extruder section/module. Those measures include a choke being arranged at an outlet of the planetary roller extruder section or module, a distance between centerlines of adjacent planetary spindles being at least equal to an outer diameter of the planetary spindles, providing a pressurized melt supply, having a cooling section composed of several sections/modules, providing at least one section/module in which a flow, during melt supply is converse to the conveying direction of the extruder, and providing cooling tubes arranged within the central spindle.

A rubbery polymer extrusion dryer includes: a cylinder; a liner provided on an inner peripheral surface of the cylinder; a screw rotatably arranged in the liner; wherein the rubbery polymer extrusion dryer conveys a rubbery polymer by the screw rotating in the liner, wherein a plurality of grooves extending in a conveying direction of the rubbery polymer are formed on an inner surface of the liner, and wherein widths of the grooves are 0.1 mm or more and 2 mm or less.