Abstract: Disclosed are a supercritical thermoplastic foam elastomer material and a preparation method and application thereof, belonging to the technical field of foam materials. The supercritical thermoplastic foam elastomer material comprises a thermoplastic elastomer, talc powder, a chain extender and an auxiliary material. According to the invention, a TPU raw material is injection-molded into a shape corresponding to a midsole, and can be directly molded after foaming without being cut. In addition, because the TPU raw material is integrally formed by injection molding, the particles of the popcorn material will not be adhered, and the defect of adhesion between the particles can be ameliorated.

Abstract: A process of microcellular foam molding an article includes using a modifier to modify properties of amorphous PLA, pouring the modified amorphous PLA into a high pressure vessel, dissolving an SCF in the high pressure vessel to impregnate the modified amorphous PLA in the high pressure vessel which is configured to allow the SCF to effuse through, forming foamed pellets, conveying the foamed pellets to a mold in a second vessel filled with water or oil, heating the second vessel, and cooling the second vessel until a foamed article is finished in the mold.

Abstract: A process of making a sole includes mixing a foaming material with a nucleating agent to form a plurality of local blanks belonging to different portions of a sole wherein the local blanks belonging to different portions have different ratios of the nucleating agent; injection molding the local blanks to form a plurality of cold molds which are joined together along a horizontal direction to form a sole blank; sulfurizing the sole blank; and subjecting the sole blank to supercritical foaming to produce a finished sole.

Abstract: A process of microcellular foam molding an article includes using a modifier to modify properties of amorphous PLA, pouring the modified amorphous PLA into a high pressure vessel, dissolving an SCF in the high pressure vessel to impregnate the modified amorphous PLA in the high pressure vessel which is configured to allow the SCF to effuse through, forming foamed pellets, conveying the foamed pellets to a mold in a second vessel filled with water or oil, heating the second vessel, and cooling the second vessel until a foamed article is finished in the mold.

Abstract: A process of microcellular foaming an article includes the steps of opening a valve to convey a polyolefin material from a hopper to a mold; activating a pressurized device to increase pressure of the mold to a predetermined pressure by heating at a predetermined temperature; supplying SCF to the mold to effuse through the polyolefin material via a pipe, thereby generating SCF effused polyolefin material; after releasing the predetermined pressure, foaming the SCF effused polyolefin material in the mold in a ratio of 1 to 1; cooling the mold; opening the mold; and removing a finished foamed article out of the mold.