A mixing and extrusion machine for tire sealant materials of the type comprising: a dump extruder equipped with conical converging twin screws located in a batching chamber, said chamber having a low pressure feeding area and a high pressure ducted area; a removable blind flange for temporarily sealing the outlet of said batching chamber so that said material is forced to recirculate between said duct area and said feeding area within said batching chamber, said chamber thereby also acting as a compounding chamber; and an inlet port located in the high pressure ducted area, the inlet port capable of introducing a diluent during mixing of a tire sealant material.

Provided is a carbon fiber reinforced plastic material having excellent rigidity, flexibility and improved heat resistance and a method of manufacturing the same. The present invention provides a carbon fiber reinforced plastic material containing 2 parts by mass or more and 30 parts by mass or less of a nanofiller with respect to a total of 100 parts by mass of 30 parts by mass or more and 90 parts by mass or less of a polymer material and 70 parts by mass or more and 10 parts by mass or less of carbon fibers, an average aspect ratio (length/width) of the nanofiller being 20 or more. The average aspect ratio (length/width) of the nanofiller may also be 50 or more.

Systems (200) and methods for making different plastic products (202, 204) in a single melting process are provided. A method includes melting a plastic resin in a first extruder (104) to form a melt (106) and transferring at least a portion of the melt to a second extruder (114). Any portion of the melt (106) that is not transferred to the second extruder (114) is formed into a first plastic product (202). Additives (116) are blended with the melt in the second extruder to form a second melt (118), and a second plastic product (204) is formed from the second melt (118).

A process for continuously preparing a polyolefin composition made from or containing a polyolefin and carbon black in an extruder device. The process includes the steps of supplying polyolefin in form of a polyolefin powder and carbon black to a mixing device; alternatively, (a) measuring the flow rate of the polyolefin powder supplied to the mixing device or (b) measuring the flow rate of the polyolefin pellets prepared in the extruder device; adjusting the flow rate of the carbon black to the mixing device in response to the measured flow rate of the polyolefin powder or adjusting the flow rate of the polyolefin powder to the mixing device in response to the measured flow rate of the polyolefin pellets; melting and homogenizing the mixture within the extruder device; and pelletizing the polyolefin composition into the polyolefin pellets.

The instant disclosure provides a die assembly for producing microcapillary film. The die assembly is operatively connectable to an extruder having a thermoplastic material passing therethrough. The die assembly includes a pair of die plates, a manifold, and a plurality of nozzles. The manifold is positionable between the pair of die plates and defining a plurality of film channels therebetween. The plurality of film channels converge into an elongate outlet. The thermoplastic material is extrudable through the plurality of film channels and the elongate outlet to form a multi-layer film. The plurality of nozzles are positionable between the plurality of film channels. The plurality of nozzles are operatively connectable to a source of channel fluid for emitting the channel fluid into the thermoplastic materials exiting the die whereby microcapillaries are formed.

A mixing and extrusion machine for tire sealant materials of the type comprising: a dump extruder equipped with conical converging twin screws located in a batching chamber, said chamber having a low pressure feeding area and a high pressure ducted area; a removable blind flange for temporarily sealing the outlet of said batching chamber so that said material is forced to recirculate between said duct area and said feeding area within said batching chamber, said chamber thereby also acting as a compounding chamber; and an inlet port located in the high pressure ducted area, the inlet port capable of introducing a diluent during mixing of a tire sealant material.

A device for introducing continuous fiber into a product material is provided. The continuous fiber is provided from at least one continuous fiber supply. The device comprises a housing having a first opening and a second opening. A channel is formed through the housing from the first opening to the second opening. At least one fin member extends from the housing into the channel with the at least one fin member having a conduit formed therethrough. Upon the product material travelling through the channel of the housing, the continuous fiber travels from the continuous fiber supply, through the conduit, and into the product material. The continuous fiber increases strength and stiffness of the product material while decreasing time-dependent creep deformation of the product material.

According to one embodiment, an extruder screw includes a screw body. The screw body is rotated about an axis parallel to a direction of conveyance of a raw material. A conveyance portion having a flight is provided on the outer peripheral surface of the screw body. The flight is configured to convey the raw material along the axis of the screw body when the screw body is rotated. A passage for permitting the raw material fed by the flight to pass therethrough to the outer peripheral surface of the screw body is provided in the screw body in a position deviated from the axis of the screw body.

A device and a method for extruding plastics, comprising an extruder screw, a housing with a cavity, a drive unit for rotatably driving the extruder screw, a heating element arranged on the housing alongside the extruder screw, a filling unit through which shredded plastic can be supplied into the cavity, and a filler metering device. Upon rotation, the extruder screw conveys the shredded plastic in the transport direction along a longitudinal axis of the extruder screw. The housing has a feeding port for the filler opening into the cavity, wherein the filler metering device is connected to the feeding port and is designed for supplying a filler dispersed in a gas stream into the cavity.

A production device for melt-blown non-woven fabric, with which a high molecular weight polymer can be reduced in molecular weight by applying a shear force to the high molecular weight polymer without adding an additive such as a peroxide that promotes thermal decomposition reaction, and a low molecular weight polymer can be efficiently produced. The low molecular weight polymer and the melt-blown non-woven fabric are produced using a continuous high shearing device that applies a shear force to the high molecular weight polymer serving as a raw material by rotation of a screw body 37 to reduce the molecular weight of the high molecular weight polymer so as to obtain a low molecular weight polymer, and cools the low molecular weight polymer by passing the low molecular weight polymer through a passage 88 arranged in the axial direction inside the screw body 37.