A manufacturing method of a thermoplastic continuous-discontinuous fiber composite sheet is provided, including providing a thermoplastic composite including a continuous fiber and a first thermoplastic resin. A mechanical treatment is performed on the thermoplastic composite to form a plurality of fragments such that the continuous fiber is changed into a discontinuous fiber. At least one thermoplastic discontinuous fiber aggregate layer is formed using the plurality of fragments as a raw material. The at least one thermoplastic discontinuous fiber aggregate layer is thermally compressed with at least one thermoplastic continuous fiber layer.

A method of separating waste material to a plurality of separated materials is disclosed herein. The method is effected by subjecting the waste material to a separation according to specific gravity, to thereby obtain two or more fractions, and optionally subjecting one or more of said fractions to additional separation procedures, to thereby obtain two or more of a low-density polymeric material, a high-density polymeric material, a metal, a glass, an oil, and lignocelluloses. The disclosed method can further be effected by processing one or more of the separated materials to thereby obtain one or more processed materials of a beneficial use. Further disclose herein are separated and/or processed materials obtainable by the method, articles-of-manufacturing comprising same, and systems for separating and/or processing the waste material.

A method of manufacturing bulked continuous carpet filament which, in various embodiments, comprises: (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) passing the group of flakes through an expanded surface area extruder while maintaining a pressure within the expanded surface area extruder below about 25 millibars; (E) passing the resulting polymer melt through at least one filter having a micron rating of less than about 50 microns; and (F) forming the recycled polymer into bulked continuous carpet filament that consists essentially of recycled PET.

A method of plastic reclamation for a plastic and natural fiber mixture, comprising, forming a mixture off first plastic component, a second plastic component, a third fiber component and a fourth additive component, the first plastic component comprising polyethylene and polypropylene, the second plastic component comprising polyethylene terephthalate, polystyrene, acrylic, nylon, polycarbonate and bioplastic, wherein the first plastic component: comprises a larger weight percentage than the second plastic component and a sum of the first plastic component and the second plastic component is 10% to 95% of a total weight, the third fiber component comprising wood, paper and natural fiber, wherein its the third fiber component is 0% to 85% of the total weight and the fourth additive component comprising at least calcium carbonate and stabilizer, wherein the fourth additive component is 5% to 45% of the total weight, agglomerating the mixture, milling the mixture and granulating the mixture,

A method of manufacturing bulked continuous carpet filament which, in various embodiments, comprises: (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) passing the flakes through a PET crystallizer; (E) passing the group of flakes through an MRS extruder while maintaining the pressure within the MRS portion of the MRS extruder below about 18 millibars; (F) passing the resulting polymer melt through at least one filter 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.

Method for recycling scrap that contains one or more heat resistant fibers and from 25 to 60 wt. %, based on the total weight of the scrap, of an at least partially uncured to fully uncured two component thermosetting resin mixture of (i) one or more thermosetting resins, and (ii) a solid hardener, the methods comprising shredding the scrap to an average size of from 3 to 50 mm, mixing the shredded scrap, preferably after preheating the scrap, to provide a fluid material charge and then compression molding the fluid material charge to make a cured composite material.

A method of manufacturing bulked continuous carpet filament which, in various embodiments, comprises: (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) passing the flakes through a PET crystallizer; (E) passing the group of flakes through an MRS extruder while maintaining the pressure within the MRS portion of the MRS extruder below about 18 millibars; (F) passing the resulting polymer melt through at least one filter 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 of manufacturing bulked continuous carpet filament which, in various embodiments, comprises: (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) passing the group of flakes through an expanded surface area extruder while maintaining a pressure within the expanded surface area extruder below about 25 millibars; (E) passing the resulting polymer melt through at least one filter having a micron rating of less than about 50 microns; and (F) forming the recycled polymer into bulked continuous carpet filament that consists essentially of recycled PET.

Provided herein are methods of recycling additively manufactured objects (e.g., stereolithographically produced objects), the additively manufactured objects comprising linear polyurethane, branched polyurethane, linear polyurea, branched polyurea, a copolymer thereof, or a combination thereof. Compositions comprising the same and methods of use thereof are also provided.

Provided is a method of continuously regenerating a separator including inorganic particles. According to an embodiment of the present disclosure, a method of continuously regenerating a separator including inorganic particles including: impregnating a separator of which at least a part of the surface is coated with a coating layer including inorganic particles in a water tank, and then performing a surface polishing treatment to release the coating layer coated on the surface of the separator; and drying the separator from which the coating layer has been released may be provided.