A fluid-flow-modification plate comprises a monolithic body, having an inlet-side surface and an outlet-side surface, a first passage, a second passage, a third passage, and a fourth passage. The first passage, the second passage, the third passage, and the fourth passage each extend between the inlet-side surface and the outlet-side surface. The first passage and the second passage intersect each other at a first intersection boundary. The third passage and the fourth passage intersect each other at a second intersection boundary. The first passage and the third passage do not intersect each other. The second passage and the fourth passage do not intersect each other. The first-passage-inlet-opening perimeter boundary has only two points of intersection with the fourth-passage-inlet-opening perimeter boundary. The second-passage-outlet-opening perimeter boundary has only two points of intersection with the third-passage-outlet-opening perimeter boundary.

A device for forming a plastic component, which device has a body which is suitable for use in a device for producing a plastic component from a first compound, and which is formed in such a way that, when used in the device for producing plastic components, by being guided past the body, the first compound is brought into a form which has at least one cavity which is continuous in the direction of the guiding past. The device additionally has a line system arranged in the body, through which a second compound can be expelled from an end of the body, in order to introduce a second compound into the cavity while the first compound is guided past the body.

The present invention relates to the technical field of optical film production, and provides a light guide film production device, including a feeding unit, a fusion stirring unit, an extrusion molding unit, a cooling shaping unit, a guide leveling unit, a flattening unit, and a finished product winding unit. The cooling shaping unit is provided with a first water tank to perform heat exchange on an extruded light guide film for heat recovery, so that edge film pressing mechanisms press pressure blocks at the edge film positions using the memory effect of a memory alloy. Circulating water of the first water tank subjected to heat exchange is delivered to a second water tank disposed in the flattening unit, so that a first conveyor belt made of the memory alloy in a third drive device drives a second rolling roller set to rotate to realize secondary utilization of recovered heat. In the present invention, an air delivery mechanism with one airflow pipe to the cooling shaping unit, and the other airflow pipe to the flattening unit is further provided. According to the present invention, the heat of the light guide film production process is used to improve the quality of the light guide film and reduce the energy consumption of the light guide film production process.

Method and system for manufacturing bulked continuous filament having tonal coloring from PET comprising: an extruder (202); a static mixing assembly (208) coupled to the extruder and comprising a housing and one or more individual static mixing elements disposed within the housing; the method and system further comprising a plurality of colorant ports along a length of the static mixing assembly such that each of the plurality of colorant ports is configured to provide colorant (204) to a polymer stream at a different location along the length of the static mixing assembly, and one or more spinning machines (212) positioned downstream of the static mixing assembly and coupled to the static mixing assembly to receive the colored polymer stream. The spinning machine(s) may be configured to form the colored polymer stream into bulked continuous carpet filament having a tonal color effect.

A plasticizing device includes a drive motor, a rotor that is rotated by the drive motor and has a groove formed face with a groove formed therein, a barrel that is opposed to the groove formed face and has a communication hole, a heating portion that heats a material in a pellet form supplied between the groove and the barrel, and a control unit that controls the drive motor and the heating portion so as to plasticize the material supplied between the groove and the barrel and cause the material to flow out from the communication hole. The heating portion has a first heating portion and a second heating portion disposed closer to the communication hole than the first heating portion, and the barrel has a first region and a second region that is closer to the communication hole than the first region. The control unit individually controls the first heating portion and the second heating portion so that a temperature of the second region is higher than a temperature of the first region.

The invention is directed to a method for producing an upgraded polymer product from recycled polyvinyl butyral, to a polymer product obtainable by said method, to a construction material comprising such polymer product, and to a use of an extruder vacuum pump.

The method of the invention comprises feeding a polymer feed stream to an extruder, wherein said polymer feed stream comprises a recycled polyvinyl butyral; melting said polymer feed stream in the extruder to produce polymer melt and passing said polymer melt through one or more degassing zones connected to a vacuum pump; measuring the melt flow index of the polymer product,
wherein the vacuum pump is operated at a pressure that is controlled by the measured melt flow index of the polymer product.

The invention is directed to a method for producing an upgraded polymer product from recycled polyvinyl butyral, to a polymer product obtainable by said method, to a construction material comprising such polymer product, and to a use of an extruder vacuum pump.

The method of the invention comprises feeding a polymer feed stream to an extruder, wherein said polymer feed stream comprises a recycled polyvinyl butyral; melting said polymer feed stream in the extruder to produce polymer melt and passing said polymer melt through one or more degassing zones connected to a vacuum pump; measuring the melt flow index of the polymer product,
wherein the vacuum pump is operated at a pressure that is controlled by the measured melt flow index of the polymer product.

A method and a device for admixing additives into a polymer melt made of non-extracted polyamide 6 are disclosed. The polymer melt is combined in a highly concentrated form with an additional melt flow without additives and mixed therewith. Additionally, a part of the melt is branched off from a main melt flow (3), wherein the sub-melt flow (4) is transported into a dispersing device (5) and is supplied and mixed with one or more additives (12). The side-melt flow (4) with additives is then returned into the main melt flow (3), mixed with the main melt flow, and subsequently supplied for further processing.

A process for fabricating a powder coating composition having a desired color from solid input filaments. A plurality of solid input filaments is fed to a mixer in accordance with an input formulation for a color. The input filaments are liquefied at the mixer, and the liquefied input filaments are combined together in the mixer into an extrudate mixture. The extrudate mixture is removed from the mixer, solidified, and then the solidified extrudate mixture is milled into a powder.

The present invention provides a process for recycling propylene-ethylene copolymers to obtain polymers having good optical and mechanical properties, as well as good processability. The invention further provides propylene-ethylene copolymer pellets obtained from the process, articles comprising or consisting of such pellets and the use of the propylene-ethylene copolymer pellets for injection molding applications. The process comprising the steps of (a) polymerizing propylene and ethylene in the presence of a single site catalyst in a continuous polymerization reactor under dynamic conditions, (b) collecting the resulting propylene-ethylene copolymer powders from step (a) to obtain a mixture (M) of propylene-ethylene copolymer powders having a MFR.sub.2 (ISO 1133, 230 C., 2.16 kg) in a raffle of from 1.5 to 80.0 g/ 10 min and an ethylene content in a range of from 1.0 to 4.0 wt. % based on the total weight of the mixture (M), (c) compounding said mixture (M) in an extruder in the presence of a radical initiator, and a clarifying agent in an amount of from 0.01 to 1.0 wt. %, based on the total weight of the mixture of propylene-ethylene copolymer powders, and (d) extruding the above mixture into pellets; wherein, in step a), the dynamic conditions are such that the ethylene content and the melt flow rate (MFR.sub.2) of the resulting copolymer gradually changes from a first predetermined ethylene content, E1, to a second predetermined ethylene content, E2, and from a first predetermined melt flow rate, MFR.sub.2-1, to a second predetermined melt flow rate, MFR.sub.2-2; wherein collecting the copolymer powders in step b) is started when the polymer produced in step a) has a first ethylene content, E1, and a melt flow rate MFR.sub.2-1, and collecting the copolymer powders in step b) is stopped when the polymer produced in step a) has a second ethylene content, E2, and a melt flow rate MFR.sub.2-2; and wherein said pellets obtained in step d) have (i) a MFR.sub.2 (ISO 1133, 230 C., 2.16 kg) in the range of from 20 to 120 g/10 in, (ii) a ratio of MFR.sub.2 pellets/MFR.sub.2 powder>1, (iii) an ethylene content in a range of from 1.0 to 4.0 wt %, (iv) a crystallization temperature Tc, determined by DSC according to ISO 11357-3:1999 in the range of from 100 to 125 C., and (v) a flexural modulus, determined in a 3-point-bending according to ISO 178 on injection molded specimens of 80104 mm, prepared in accordance with EN ISO 1873-2, of 850 MPa or more.