The invention relates to a process for producing a polypropylene composition using a first extruder comprising successive zones comprising a first zone, a second zone, a third zone and a fourth zone and a second extruder comprising successive zones comprising a first zone and a second zone, the process comprising the steps of: 1a) introducing a first propylene-based polymer in the first zone of the first extruder, 1b) melt mixing the first propylene-based polymer in the second zone of the first extruder, 1c) adding an additive masterbatch to the mixture of step 1b) in the third zone of the first extruder and 1d) melt-mixing the mixture of step 1c) in the fourth zone of the first extruder to obtain the polypropylene composition, wherein the maximum temperature in the fourth zone of the first extruder is lower than the maximum temperature in the second zone of the first extruder and is lower than 240° C., wherein the additive masterbatch is produced in the second extruder by a process comprising the steps of: 2a) introducing a second propylene-based polymer and organic additives in the first zone of the second extruder and 2b) melt mixing the mixture of step 2a) in the second zone of the second extruder to obtain the additive masterbatch, wherein the maximum temperature in the second zone of the second extruder is lower than the maximum temperature in the second zone of the first extruder and is lower than 240° C.

The present disclosure is related to apparatuses, processes, and extrusion screws directed to process solid detergent compositions in shapes like billets, bars, tablets, noodles, and similar shapes produced from extruded synthetic detergents, soaps, and combinations thereof. The present disclosure describes an extrusion screw for processing synthetic detergents, soaps, and combinations thereof. The extrusion screw comprises a feed section, a metering section, and a compression section. Said compression section has a proximal channel depth adjacent to the feed section, and a distal channel depth adjacent to the metering section, and a compression ratio that may be between 2.2, and 4.1, for example, between 2.2, and 2.6. The extrusion screw may have a length to diameter ratio (L/D) that may be between 4.0, and 6.0. The present disclosure also describes an apparatus for processing synthetic detergents, soaps, and combinations thereof. The apparatus comprises a barrel and said extrusion screw. The present disclosure also describes a process for extruding solid synthetic detergents, soaps, and combinations thereof. The process comprises a step of providing a formulation that may be selected from synthetic detergent, and half-synthetic soap to said apparatus, and compressing said formulation at a temperature between 32° C., and 42° C. with a compression section of the extrusion screw. The screw rotation speed of the extrusion screw may be between 4, and 20 RPM. The formulation may be provided prewarmed. The screw rotation speed of the extrusion screw may be between 4, and 35 RPM (e.g., between 4 and 20 RPM).

The present application belongs to the field of heat conducting materials technology, and in particular, to a preparation method of a heat conducting interface material. The present application discloses a preparation method of a heat-conducting interface material, which comprises: S1, stirring and mixing; S2. orientation process: putting a mixed material obtained in the step S1 into a hydraulic injection extruder, spitting the material out through a needle nozzle and arranging the material neatly in a container in a strip shape, and after stacking the material to ½-¼ of a height of the container, vibrating the material in a vibrating compactor and repeatedly performing stacking 2-4 times; S3, vacuum compaction; S4. curing; S5. slicing.

Methods of manufacturing bulked continuous carpet filament which, in various embodiments, comprise: (A) grinding recycled PET bottles into a group of flakes; (B) washing the flakes; (C) identifying and removing impurities, including impure flakes, from the group of flakes; (D) adding one or more color concentrates to the flakes; (E) passing the group of flakes through an MRS extruder (400) while maintaining the pressure within the MRS portion (420) of the MRS extruder (400) below about 25 millibars; (F) passing the resulting polymer melt through at least one filter (450) having a micron rating of less than about 50 microns; and (G) forming the recycled polymer into bulked continuous carpet filament that consists essentially of recycled PET.

The present invention relates to a method for producing a biodegradable resin expanded sheet, by which a biodegradable resin expanded sheet immediately after extrusion is brought into a predetermined cooled state in an extrusion expansion method, whereby good formability can be exerted.

A method for reducing an amount of a contaminant in a thermoplastic polymer comprising shearing a combination comprising a contaminated thermoplastic polymer in melt form, water, and a dispersing agent where the shearing causes a portion of the contaminant to be removed from the contaminated thermoplastic polymer (e.g. moved into an aqueous phase with the water or into another separate phase from the water and the polymer), and after shearing, separating the thermoplastic from the aqueous phase to recover thermoplastic polymer.

The present invention relates to a method for producing antimicrobial nanofilms packaging cover based on Titanium nano-dioxide through extrusion for extension of food shelf-life. The method comprises the steps of providing nano-silver and nano-clay particles which are antimicrobial agents to enhance mechanical properties of packaging in food industry; and evaluating effects of nano clay and nano silver packaging on the growth of these bacteria within 6 days of shelf life keeping at 4° C. The silver and clay nanoparticles are analyzed using AFM, SEM, FESEM, EDX, FTIR and TEM, wherein the size of clay and silver nanoparticles are measured 15 nm and 35 nm, respectively.

The present invention relates to a method for producing antimicrobial nanofilms packaging cover based on Titanium nano-dioxide through extrusion for extension of food shelf-life. The method comprises the steps of providing nano-silver and nano-clay particles which are antimicrobial agents to enhance mechanical properties of packaging in food industry; and evaluating effects of nano clay and nano silver packaging on the growth of these bacteria within 6 days of shelf life keeping at 4° C. The silver and clay nanoparticles are analyzed using AFM, SEM, FESEM, EDX, FTIR and TEM, wherein the size of clay and silver nanoparticles are measured 15 nm and 35 nm, respectively.

A method for manufacturing pellets from polymer, comprising: (1) melting polymer flakes in a first section of a melt processing unit to create a first single stream of polymer melt; (2) separating the first single stream of polymer melt into multiple streams of polymer melt by means of a separation element; (3) passing the multiple streams through a multiple stream section of said melt processing unit and exposing the multiple streams to a pressure within the multiple stream section of the melt processing unit as the multiple streams pass through the multiple stream section; (4) recombining the multiple streams into at least one combined stream of polymer melt; and (5) cooling the polymer melt and forming said pellets from the at least one combined stream. The intrinsic viscosity of the at least one combined stream may be determined and, in response, the chamber pressure within the multiple stream section adjusted.

A method for manufacturing pellets from polymer, comprising: (1) melting polymer flakes in a first section of a melt processing unit to create a first single stream of polymer melt; (2) separating the first single stream of polymer melt into multiple streams of polymer melt by means of a separation element; (3) passing the multiple streams through a multiple stream section of said melt processing unit and exposing the multiple streams to a pressure within the multiple stream section of the melt processing unit as the multiple streams pass through the multiple stream section; (4) recombining the multiple streams into at least one combined stream of polymer melt; and (5) cooling the polymer melt and forming said pellets from the at least one combined stream. The intrinsic viscosity of the at least one combined stream may be determined and, in response, the chamber pressure within the multiple stream section adjusted.