Method for preparing foamed thermoplastic polyurethane elastomer product

A method for preparing a foamed thermoplastic polyurethane elastomer product, comprising the steps of:

• 1) coating a binder on surfaces of expanded thermoplastic polyurethane elastomer particles to form a product;
• 2) vulcanizing and molding:
• adding the product obtained from step 1) to a mold and then placing it in a vulcanizing machine at a vulcanizing temperature of 40-200° C. and a vulcanizing pressure of 0.01-1 MPa for a vulcanizing time of 1-30 minutes to vulcanize and mold the product from step 1);
• and
• 3) cooling and setting:
• cooling the mold after the vulcanizing and molding in step 2) to a cooling temperature for a cooling time to obtain the foamed thermoplastic polyurethane elastomer product;
• wherein the method does not comprise a step of welding the expanded thermoplastic polyurethane particles through a steam medium;
• and
• wherein the mass ratio of the binder to the expanded thermoplastic polyurethane elastomer particles in step 1) is from 1:500 to 1:10,000.