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.

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 of manufacturing bulked continuous carpet filament from recycled polymer. In various embodiments, the method includes: (1) reducing recycled polymer material into polymer flakes; (2) cleansing the polymer flakes; (3) melting the flakes into a polymer melt; (4) removing water and contaminants from the polymer melt by dividing the polymer melt into a plurality of polymer streams and exposing those streams to pressures below 25 millibars or another predetermined pressure; (5) recombining the streams; and (6) using the resulting purified polymer to produce bulked continuous carpet filament.

Systems for manufacturing bulked continuous carpet filament from polymer, where the systems are configured for: (1) passing polymer flakes through a crystalliers; (2) melting the polymer to create a first single stream of polymer melt; (3) separating the first single stream of polymer melt into multiple streams of polymer melt; (4) exposing the multiple streams of polymer melt to a pressure of between about 0 millibars and about 25 millibars in a chamber; (5) recombining the multiple streams of polymer melt into a second single stream of polymer melt; and (6) providing the second single stream of polymer melt to one or more spinning machines that are configured to form the second single stream of polymer melt into bulked continuous carpet filament.

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 present invention provides an elastic fiber dry spinning component and spinning part. The spinning component includes: a temperature control box (3) including a box body (31), wherein the box body (31) is longitudinally provided with multiple polymer solution channels (32) separated from each other; areas in the box body (31) other than the polymer solution channels (32) are cavities, and the cavities are used for circulation of a fluid medium that exchanges heat with an elastic fiber dry spinning polymer solution in the polymer solution channels (32); and a spinneret part (4) detachably connected to the temperature control box (3), wherein the spinneret part (4) includes multiple spinneret orifice sets (41) separated from each other, and the multiple spinneret orifice sets (41) are correspondingly in communication with outlets of the multiple polymer solution channels (32). The spinning part includes a metering device and the above-mentioned spinning component; the metering device is detachably connected to the temperature control box (3) and is used for metering and allocating the elastic fiber dry spinning polymer solution to the multiple polymer solution channels (32). The spinning component and the spinning part are convenient to install and maintain and are highly efficient.

The present invention describes a method for the production of a spinning dope composition, said method comprising a homogenization involving vigorous mixing of a cellulosic pulp material in alkali solution, vigorous mixing implying supplying a power density to agitators used in the homogenization step of at least 150 kW/m.sup.3 (kW supplied to agitators per mixed unit of liquid volume), and thereafter a dissolution involving mixing of the cellulosic pulp material in the alkali solution to obtain a spinning dope composition, wherein the power density supplied to agitators used in the dissolution step is maximum 75 kW/m.sup.3 (kW supplied to agitators per mixed unit of liquid volume); and wherein the cellulosic pulp material in alkali solution is kept at a temperature of less than 0° C. during the homogenization and during at least part of the dissolution. The present invention is also directed to a system intended for the production of a spinning dope composition.

Provided is a spinning solution, comprising a cannabidiol powder and an alginate solution. Besides, the present invention further provides an alginate fiber comprising cannabidiol, and the preparation method and the use thereof. The cannabidiol powder in the spinning solution can be evenly dispersed in the alginate solution, so that the spinning solution of the present invention can be applied to wet spinning to form the alginate fiber comprising cannabidiol. The alginate fiber comprising cannabidiol has anti-oxidative, anti-bacterial, antiinflammatory, and anti-allergic abilities.

The present invention relates to a dispersion device and a defoamation device comprising the same, which provides a dispersion device comprising a dispersion plate equipped with an inclined surface extended downwards obliquely and raw material inflow nozzles formed on the inclined surface to introduce a raw material into the inclined surface; and a band spaced apart from the inclined surface of the dispersion plate to form a gap from the inclined surface, thereby being configured so that the raw material flows through the gap.

The present invention relates to a dispersion device and a defoamation device comprising the same, which provides a dispersion device comprising a dispersion plate equipped with an inclined surface extended downwards obliquely and raw material inflow nozzles formed on the inclined surface to introduce a raw material into the inclined surface; and a band spaced apart from the inclined surface of the dispersion plate to form a gap from the inclined surface, thereby being configured so that the raw material flows through the gap.