Abstract: Systems, apparatuses, and methods for implementing a hierarchical scheduler. In various implementations, a processor includes a global scheduler, and a plurality of independent local schedulers with each of the local schedulers coupled to a plurality of processors. In one implementation, the processor is a graphics processing unit and the processors are computation units. The processor further includes a shared cache that is shared by the plurality of local schedulers. Each of the local schedulers also includes a local cache used by the local scheduler and processors coupled to the local scheduler. To schedule work items for execution, the global scheduler is configured to store one or more work items in the shared cache and convey an indication to a first local scheduler of the plurality of local schedulers which causes the first local scheduler to retrieve the one or more work items from the shared cache.

Abstract: Systems, apparatuses, and methods for implementing a message passing system to schedule work in a computing system. In various implementations, a processor includes a global scheduler, and a plurality of local schedulers with each of the local schedulers coupled to a plurality of processors. The processor further includes a shared cache that is shared by the plurality of local schedulers. Also, a plurality of mailboxes are implemented to enable communication between the local schedulers and the global scheduler. To schedule work items for execution, the global scheduler is configured to store one or more work items in the shared cache and store an indication in a mailbox for a first local scheduler of the plurality of local schedulers. Responsive to detecting the message in the mailbox, the first local scheduler identifies a location of the one or more work items in the shared cache and retrieves them for scheduling locally.

Abstract: The invention relates to a ventilation module for a film stretching system at least one first outlet nozzle arrangement having an outlet nozzle, wherein the at least one outlet nozzle extends with its longitudinal direction transverse or perpendicular to the withdrawal direction of a plastic film web and is oriented in parallel to the transport plane. A first return system is provided with at least two extraction channels, each having an intake region. The at least two intake regions are spaced apart from one another in the withdrawal direction and oriented in parallel to the transport plane. The at least one outlet nozzle of the at least one first outlet nozzle arrangement is arranged between the first and the second intake region. The at least two intake regions are arranged exclusively before and/or after the at least one first outlet nozzle arrangement in the withdrawal direction of the plastic film web.

Abstract: An improved device for the uniaxial or biaxial stretching of plastics material portions. The device includes a stretching frame with two pairs of mutually perpendicular guide rails with clips for stretching a plastics material portion, which clips are movable away from or towards each other. The device is constructed such that in addition to the starting position at the beginning of a stretching process and the end position after performing a stretching process, the guide rails and thus the clips seated thereon are additionally movable into a loading position. The loading position is arranged so that it lies asymmetrically within the stretching frame and is thus closer to at least one longitudinal side of the stretching frame than to the opposite side of the stretching frame.

Abstract: The invention relates to a sliding element, in particular for a stretching installation and/or a conveyor chain, comprising graphite or electrographite, wherein the sliding element has pores which have an open pore size of ?7.5% by volume, and wherein the particle size of the graphite particles used as a starting material for the sliding elements is between 3 ?m and 15 ?m.

Abstract: The invention relates to a ventilation module for a film stretching system at least one first outlet nozzle arrangement having an outlet nozzle, wherein the at least one outlet nozzle extends with its longitudinal direction transverse or perpendicular to the withdrawal direction of a plastic film web and is oriented in parallel to the transport plane. A first return system is provided with at least two extraction channels, each having an intake region. The at least two intake regions are spaced apart from one another in the withdrawal direction and oriented in parallel to the transport plane. The at least one outlet nozzle of the at least one first outlet nozzle arrangement is arranged between the first and the second intake region. The at least two intake regions are arranged exclusively before and/or after the at least one first outlet nozzle arrangement in the withdrawal direction of the plastic film web.

Abstract: The invention relates to a sliding element, in particular for a stretching installation and/or a conveyor chain, comprising graphite or electrographite, wherein the sliding element has pores which have an open pore size of ?7.5% by volume, and wherein the particle size of the graphite particles used as a starting material for the sliding elements is between 3 ?m and 15 ?m.

Abstract: An improved device for the uniaxial or biaxial stretching of plastics material portions by means of a stretching frame is characterised among other things by the following features: the stretching frame comprises two pairs of mutually perpendicular guide rails with clips for stretching a plastics material portion, which clips are movable away from or towards each other; the device is constructed such that in addition to the starting position at the beginning of a stretching process and the end position after performing a stretching process, the guide rails and thus the clips seated thereon are additionally movable into a loading position, and the loading position is arranged so that it lies asymmetrically within the stretching frame and is thus closer to at least one longitudinal side of the stretching frame than to the opposite side of the stretching frame.

Abstract: The invention relates to an improved transport system, in particular for a stretching system, characterized amongst other things, by the following characteristics: a support rail and/or a guide rail, over which a conveyor chain with clip chain units can be displaced, are provided, said units subdividing into a clip part and a chain part, said support rail or the guide rail or the support rail and the guide rail is/are provided with a channel which transverses in the longitudinal direction at least in one of the partial lengths of the support rail and the guide rail.

Abstract: The invention relates to an improved stretching unit characterized, amongst other things by the following: the clip-chain unit is designed such that the forces which are exerted are decoupled and applied in a tilting-free and torque-free manner to the clip-chain unit in order to prevent an increase of the surface pressure between the clip-chain unit and the supporting rail.

Abstract: The invention relates to an improved clip/transport unit, characterized by the following features, among others: the clip/transport unit is divided into a clip part and a transport part, the clip/transport unit has a volume or weight fraction of at least 25% composed of one or more composite materials.

Abstract: An improved multiple-screw extruder, in particular a twin-screw extruder comprises a housing. Several housing bores are located in at least one section within the housing. The housing bores overlap at least along a partial axial length of the housing. One extruder screw is arranged in each of the several housing bores. At least two motors are provided for the at least two extruder screws. A synchronizing and torsion transmitting device, by means of which both cooperating extruder screws can be synchronized, is provided on both the inlet side and the discharge side.

Abstract: The invention relates to an improved transport system, in particular for a stretching system, characterized amongst other things, by the following characteristics: a support rail and/or a guide rail, over which a conveyor chain with clip chain units can be displaced, are provided, said units subdividing into a clip part and a chain part, said support rail or the guide rail or the support rail and the guide rail is/are provided with a channel which transverses in the longitudinal direction at least in one of the partial lengths of the support rail and the guide rail.

Abstract: The invention relates to an improved stretching unit characterised, amongst other things by the following: the clip-chain unit is designed such that the forces which are exerted are decoupled and applied in a tilting-free and torque-free manner to the clip-chain unit in order to prevent an increase of the surface pressure between the clip-chain unit and the supporting rail.

Abstract: An improved multiple-screw extruder, in particular a twin-screw extruder comprises a housing. Several housing bores are located in at least one section within the housing. The housing bores overlap at least along a partial axial length of the housing. One extruder screw is arranged in each of the several housing bores. At least two motors are provided for the at least two extruder screws. A synchronizing and torsion transmitting device, by means of which both cooperating extruder screws can be synchronized, is provided on both the inlet side and the discharge side.

Abstract: A method for manufacturing a nonwoven fabric, wherein a layer of nonwoven fabric is made up of a fiber mixture of at least two different types of fibers is formed. The single nonwoven fabric layer is solidified. The solidified single nonwoven fabric layer is then subjected to heat treatment subject to the condition that shrinkage of at least one of the types of fibers is activated.

Abstract: Device for the production of multicomponent fibers or of filaments, in particular bicomponent fibers, whereby a nozzle block assembly is provided. The assembly consists of a middle nozzle block and two outer nozzle blocks. Arranged in the nozzle block assembly are at least two inflow channels, each for a melt flow of one component. At the lower end of the nozzle block assembly is a nozzle with apertures for the outlet of the multicomponent strands. At least one inflow channel runs over at least a part of its length exclusively through an outer nozzle block.

Abstract: A device for producing filaments, in particular, from a thermoplastic polymer, wherein the filaments emerge from the spinneret openings of a spinneret plate. A distribution device is provided for distributing the molten polymer being supplied over a preliminary spinning width. At least one exchangeable distribution plate with several distribution openings that are distributed over the spinning width is arranged downstream of the distribution device. The exchangeable spinneret plate is arranged downstream of the distribution plate, wherein said spinneret plate contains spinneret channels that are distributed over the final spinning width. The spinning width defined by the distribution openings is smaller or larger than the preliminary spinning width, and the preliminary spinning width can be reduced or enlarged to the final spinning width with the aid of the distribution plate. The desired final spinning width can be adjusted by exchanging the distribution plate.

Abstract: Device for the production of multicomponent fibers or of filaments, in particular bicomponent fibers, whereby a nozzle block assembly is provided. The assembly consists of a middle nozzle block and two outer nozzle blocks. Arranged in the nozzle block assembly are at least two inflow channels, each for a melt flow of one component. At the lower end of the nozzle block assembly is a nozzle with apertures for the outlet of the multicomponent strands. At least one inflow channel runs over at least a part of its length exclusively through an outer nozzle block.

Abstract: A method for manufacturing a nonwoven fabric, wherein a layer of nonwoven fabric is made up of a fiber mixture of at least two different types of fibers is formed. The single nonwoven fabric layer is solidified. The solidified single nonwoven fabric layer is then subjected to heat treatment subject to the condition that shrinkage of at least one of the types of fibers is activated.