The present disclosure relates to a nozzle block applied to an electrospinning device, which includes a radiation nozzle having a hollow radiation needle for discharging a spinning solution to the outside; a means of piercing having a diameter smaller than that of the radiation needle, at least one of which is coaxially disposed inside the radiation needle; and a reciprocating mechanism for reciprocating the means of piercing and the radiation needle relative to each other, thereby preventing the solution from being solidified at the tip of the radiation nozzle or the radiation nozzle from being blocked by external contaminants even if the electrospinning process is temporarily interrupted in the middle.

The invention relates to an extrude unit for a dryer (2) for biomass, in particular slurry, wherein the extruder unit (1) has a surface section (4) for the biomass to pass through and a plurality of apertures (3), wherein the extruder unit (1) comprises a base support (5) which is connected by means of a connecting section (6) to a driving element (7) and can be driven by means of the driving element (7) about an axis of rotation (8) and relative to the surface section (4), wherein the base support (5) comprises at least one support arm (9) having at least one scraper blade (10) which during a rotation of the base support (5) follows the shape of the face of the surface section (4) facing the scraper blade (10). According to the invention the base support (5) also comprises at least one breaker element (11) having at least one scraper blade (10) which during a rotation of the base support (5) also follows the shape of the face of the surface section (4) facing the scraper blade (10) and during the rotation of the base support (5) effects a crushing of constituents contained in the biomass which are retained by the surface section (4). The invention further relates to a dryer having at least one corresponding extruder unit.

The invention relates to a multiple extrusion press head for producing tread profiles of tyres, comprising: a base body (12) having a first supply opening (22) for connecting a first extruder, a second supply opening (24) for connecting a second extruder, a third supply opening (26) for connecting a third extruder, and a fourth supply opening for connecting a fourth extruder; a first head part (14) which is mounted such that it can swivel in relation to the base body, and which has a receiving means (32) that is open in the direction of the base body (12); a second head part that is mounted such that it can swivel in relation to the base body (12); at least one flow channel insert (18, 20) that is mounted such that it can swivel in relation to the base body (12), wherein the first head part (14) and the second head part (16) can be brought into a closed state, in which the head parts (14, 16) are connected to one another in a pressure-tight manner, and a first flow channel (34), a second flow channel (36), a third flow channel (38) and a fourth flow channel (40) are formed in the multiple extrusion press head (10), wherein every flow channel is connected to a supply opening. According to the invention, the base body (12) has a fifth supply opening (30) for connecting a fifth extruder, and the multiple extrusion press head (10) has a second flow channel insert (20), which, independently of the first flow channel insert (18), is mounted such that it can swivel in relation to the base body (12), and borders a fifth flow channel (42) that is connected to the fifth supply opening (30).

The invention relates to a method for making granules from strands of a melt of a thermoplastic polymer material having the steps of creating and providing the melt of the material, discharging the material in multiple strands from a perforated plate, impinging the strands with an impinging flow fluid from an impinging flow nozzle, cooling the strands and dividing the strands into individual granules, wherein the strands are impinged by the impinging flow fluid only during discharge from the perforated plate, and wherein, as it is discharged from the impinging flow nozzle, the impinging flow fluid has a temperature above the melting temperature of the material and has a discharge velocity in the range from 50 m/sec to 300 m/sec; the invention also relates to a device for carrying out the method with an impinging flow device that can be pivoted by means of a pivoting joint.

The invention relates to a cooling nozzle which has a product channel of annular cross-section the circumference of which is closed with the exception of at least one recess. Said recess has the effect that compound exiting the product channel spreads uniformly on a substrate if the compound is sufficiently solid after cooling during passage through the cooling nozzle so that it does not deliquesce on a flat substrate.

A method of cleaning an extrusion die from residual metal remaining after an extrusion process at a temperature below 600° C. and of recovering the residual metal includes providing a thrust member with at least one portion made of a polymeric material at the extrusion die; reciprocally moving the thrust member and the die; removing polymeric material not flowed out of the die during the preceding step; mechanically and/or chemically removing the residual metal not flowed out from the die during the moving step; and opening the extrusion die. The polymeric material in the moving step has a water content lower than 7% by weight with respect to the total weight of the polymeric material. During the moving step, the polymeric material is at least partially in a plastic deformation condition or melted so as to occupy the volume of the residual metal flowed out of the extrusion die.

According to an embodiment, an electrospinning head includes a nozzle and an uneven surface. The nozzle is made from an electrically conductive material, and a flow path is formed inside the nozzle. On the outer surface of the nozzle, an ejection port capable of ejecting a material liquid supplied to the flow path is formed. The uneven surface is formed in the vicinity of the projection port on the outer surface of the nozzle, and an uneven shape of the uneven surface is formed around the entire circumference of the circumferential direction of the nozzle and is along the extending direction of the flow path.

An air ring has a main body including a plenum through which pressurized air enters the air ring, the main body including a generally circular interior that is unobstructed vertically above the main body. A generally circular forming-cone assembly is received in the generally circular interior of the main body, and includes at least one annular lip defining a passage through which pressurized air from the plenum exits the air ring for impingement upon the polymer tube. A plurality of fasteners secure the forming-cone assembly in the interior of the main body, the fasteners and forming-cone assembly being unobstructed vertically above the air ring, wherein the fasteners are accessible from vertically above the air ring and the forming-cone assembly is removable from the main body by vertical lifting without removal of other components from the air ring.

In a first aspect, the present invention relates to a process improvement additive suitable for polymer processing, wherein this process improvement additive comprises a carrier polymer, a binding component and one or more fluoropolymers and wherein this process improvement additive further comprises one or more zeolites. In a second aspect, the present invention relates to a method for processing a polymer, wherein a process improvement additive is added to the polymer prior to processing and wherein this process improvement additive comprises a carrier polymer, a binding component, one or more fluoropolymers and one or more zeolites.

An on-line automatic cleaning apparatus of slit extrusion type coating die for lithium battery and a method associated therewith are provided. The cleaning apparatus includes: a die lip, a coating steel roller, and a cleaning mechanism disposed therebetween. The cleaning mechanism includes a cleaning chamber which includes elongated sealing strips and a flow-guiding arc groove. Front and rear ends of the cleaning chamber are connected to an inlet sealing plate and an outlet sealing plate respectively. The flow-guiding arc groove is in contact with and presses upper and lower sloped surfaces of the die lip through the elongated sealing strips to seal and thereby define a closed cleaning tunnel. The inlet and outlet sealing plates are in contact with and press two ends of the closed cleaning tunnel respectively for circumferential sealing. An inlet and an outlet are connected to pipes having solenoid valves installed thereon.