A plant and method for the online recovery of trimmings generated in an extrusion line of a plastic film includes a cutting apparatus configured to cut side portions, also called trimmings, from the plastic film made leaving a forming apparatus of the plastic film; a conveying apparatus, positioned downstream of the cutting apparatus, that conveys the trimmings; an extruder for treatment of the trimmings; and an apparatus dosing and feeding granules for forming the plastic film made in the extruder, the extruder and the apparatus dosing and feeding the granules being positioned upstream of the forming device. An apparatus for pre-treatment of the trimmings is provided at the inlet of the extruder and includes a shredder positioned coaxially with respect to the extruder.

A consolidation system configured to consolidate a bulk molding compound, the apparatus comprises a barrel, a low compression first stage within the barrel, a high compression second stage within the barrel coupled with the low compression first stage, a die breaker coupled to the high compression second stage, and an extrusion die coupled to the die breaker. The low compression first stage includes a low compression screw for mixing and compressing a bulk molding compound comprising a resin and fillers. The high compression second stage includes a high compression screw for compressing the bulk molding compound into a compressed material. The die breaker comprises at least one of a plurality of holes or a plurality of slots.

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 method for manufacturing bulked continuous carpet filament, the method comprising: (1) reducing a chamber pressure within a chamber to below about 5 millibars; (2) after reducing the chamber pressure to below about 5 millibars, providing a polymer melt to the chamber; (3) separating the polymer melt into at least eight streams; (4) while the at least eight streams of the polymer melt are within the chamber, exposing the at least eight streams of the polymer melt to the chamber pressure of below about 5 millibars; (5) after exposing the at least eight streams of the polymer melt to the chamber pressure of below about 5 millibars, recombining the at least eight streams into a single polymer stream; and (6) forming polymer from the single polymer stream into bulked continuous carpet filament.

The invention relates to a screw extruder (29) having a housing (30) comprising an intake housing (4), a degassing housing (5), and at least one housing bore (21, 22) running in the interior of the degassing housing (5) and implementing at least one internal wall segment (25; 26; 27; 28) of the degassing housing (5) and serving for receiving at least one auger shaft (7), and wherein the at least one wall segment (25; 26; 27; 28) of the at least one housing bore (21, 22) comprises at least one partition wall (13, 33) protruding into the at least one housing bore (21, 22) in the region of the degassing housing (5), and wherein at least one filter element (8) is disposed in the interior of the degassing housing (5) and at least partially encompasses the at least one auger shaft (7) and bears on the partition wall (13) in regions for implementing at least two spatial pressure regions (11, 12) sealed off from each other.

There is disclosed a method of manufacturing a composite component comprising a main body and an integral flange, the method comprising: applying fibre reinforcement material on a tool having a main body portion and a flange-forming portion to provide a pre-form having first, second and third contiguous regions, the first region corresponding to the main body of the component and the second region corresponding to the integral flange of the component; and causing relative movement between the flange-forming portion and the main body portion so that the second region of the pre-form deforms to form the flange; wherein the relative movement of the flange-forming portion and the main body portion causes sliding movement between the second and third regions of the pre-form and the flange-forming, thereby producing a tension force in at least the second region of the pre-form during forming of the flange.

There is disclosed a method of manufacturing a composite component comprising a main body and an integral flange, the method comprising: applying fibre reinforcement material on a tool having a main body portion and a flange-forming portion to provide a pre-form having first, second and third contiguous regions, the first region corresponding to the main body of the component and the second region corresponding to the integral flange of the component; and causing relative movement between the flange-forming portion and the main body portion so that the second region of the pre-form deforms to form the flange; wherein the relative movement of the flange-forming portion and the main body portion causes sliding movement between the second and third regions of the pre-form and the flange-forming, thereby producing a tension force in at least the second region of the pre-form during forming of the flange.

A mixing apparatus includes a mixer configured to mix a material including a rubber or a resin in the presence of a working fluid that is in a supercritical state or a subcritical state. The mixer includes a chamber that forms a flow passage for the working fluid and the material, and a mixing blade disposed in the chamber and fixed to the chamber.

Systems for producing superabsorbent polymer particles for use in agricultural applications are disclosed. A monomer is graft polymerized onto a starch to form a starch graft copolymer. The moisture content of the starch graft copolymer is reduced through use of an extruder.

A method of manufacturing bulked continuous carpet filament, in various embodiments, comprises: (A) providing an expanded surface area extruder; (B) providing a spinning machine having an inlet that is operatively coupled to an expanded surface area extruder outlet; (C) using a pressure regulation system to reduce the pressure within the expanded surface area extruder; (D) passing a plurality of flakes comprising recycled PET through the expanded surface area extruder to at least partially melt the plurality of flakes to form a polymer melt; and (E) substantially immediately after passing the plurality of flakes through the expanded surface area extruder, using the spinning machine to form the polymer melt into bulked continuous carpet filament. In some embodiments, the method may include passing the plurality of flakes comprising recycled PET through a PET crystallizer prior to extrusion.