Abstract: A disposal method for recyclate of the disclosure including: providing recyclable containing polyester; performing a first depolymerization step, including mixing the recyclable and o-BHET for reaction and extrusion depolymerization to at least obtain or produce p-BHET; and performing a second depolymerization step, including mixing the p-BHET and a depolymerization solution for chemically depolymerization to at least obtain or produce m-BHET.

Abstract: A manufacturing method of a polyester includes: providing a recycled material, ethylene glycol, and a catalyst, in which the recycled material includes PET; performing a depolymerization step with use of the recycled material, the ethylene glycol, and the catalyst to obtain a BHET crude product; performing a purification step with use of the BHET crude product to obtain a BHET monomer; providing a phosphorus-containing monomer; and performing an esterification step and a polymerization step with use of the BHET monomer and the phosphorus-containing monomer.

Abstract: A manufacturing method of polyester includes: a first recycled material, a second recycled material, ethylene glycol and a phosphorus-containing monomer are provided, in which the first recycled material includes polyethylene terephthalate (PET), and the second recycled material includes bis-2-hydroxylethyl terephthalate (BHET), polyethylene terephthalate dimer, polyethylene terephthalate trimer, mono(2-hydroxyethyl) terephthalic acid or combinations thereof; the first recycled material, the second recycled material, the ethylene glycol and the phosphorus-containing monomer are used to perform a depolymerization and monomer bonding step to obtain a polyethylene terephthalate containing phosphorus monomer oligomer; a catalyst is provided; and the polyethylene terephthalate containing phosphorus monomer oligomer and the catalyst are used to perform a copolymerization step.

Abstract: The disclosure provides a recycle method of a polyester fabric, which includes the following steps. A decolorization treatment is performed on the polyester fabric to form a decolorized polyester fabric. The decolorized polyester fabric is mixed with a thickening material to form an initial feed. A liquid state polymerization is performed on the initial feed to form a liquid state polymer product. The liquid state polymer product is refluxed to be mixed with the initial feed to form an intermediate feed. The liquid state polymerization is performed on the intermediate feed to form a final polymer product.

Abstract: A manufacturing method of a recycled polyester fabric includes: providing a dope-dyed fabric; performing a pre-depolymerization step on the dope-dyed fabric; and performing a post-processing step on a pre-depolymer to obtain the recycled polyester fabric. The dope-dyed fabric includes a pigment and a polyethylene terephthalate resin, and a first particle size of the pigment is less than 1 micrometer. The pre-depolymerization step includes performing a first depolymerization procedure on the dope-dyed fabric to form an oligomer; adding the oligomer to an activated carbon to perform a mixing procedure; and performing a filtration procedure to separate the oligomer from the activated carbon and obtain the pre-depolymer. A second particle size of the activated carbon is larger than the first particle size of the pigment. The post-processing step includes a second depolymerization procedure, a monomer purification procedure, a polymerization procedure, or a combination thereof.

Abstract: The disclosure provides a recycling method of a polyester material, which includes the following steps. First, the polyester material is subdivided and washed, and then dried using a microwave drying process. Afterwards, the dried polyester material is melted and extruded, and a flow direction of the molten polyester material is at a tangential angle to a surface of a filter for performing melt filtration. Next, the filtered polyester material is cooled and pelletized.

Abstract: The disclosure provides a chemical recycling method for polyester fabrics, which includes the following steps. The polyester fabric is extracted using a composite solvent and filtered to obtain a decolored polyester fabric. The composite solvent contains alcohol ether and phenyl ether, and the decolored polyester fabric contains the composite solvent. Ethylene glycol is then added to the decolored polyester fabric to depolymerize into ethylene terephthalate monomers.

Abstract: A disposal method for recyclate of the disclosure including: providing recyclable containing polyester; performing a first depolymerization step, including mixing the recyclable and o-BHET for reaction and extrusion depolymerization to at least obtain or produce p-BHET; and performing a second depolymerization step, including mixing the p-BHET and a depolymerization solution for chemically depolymerization to at least obtain or produce m-BHET.