Abstract: Disclosed herein is a method for manufacturing a sound insulation material, a sound insulation material manufactured using this manufacturing method, and a carpet for a vehicle using the sound insulation material, and the sound insulation material is manufactured using a composite resin composition including 30 parts by weight to 70 parts by weight of aluminum oxide, 10 parts by weight to 20 parts by weight of nanoclay, 0.2 parts by weight to 0.8 parts by weight of an antioxidant, and 0.1 parts by weight to 0.5 parts by weight of a lubricant, with respect to 100 parts by weight of a base resin including PE, and the carpet for a vehicle is manufactured by coating the sound insulation material on a carpet fabric material and drying the result.

Abstract: A low-melting adhesive film may include a first adhesive layer made of a material comprising thermoplastic polyurethane, a second adhesive layer made of a material comprising aromatic-based hot-melt thermoplastic polyurethane capable of being applied to low temperature adhesion at a temperature of 60° C. or higher, and a polyethylene (PE)-based protective film layer. The low-melting adhesive film may be used to adhere a carpet fabric to a sound absorbing material and thus produce an integrated sound absorbing and proofing composite carpet.

Abstract: A method of manufacturing a molded product with controlled density may include preparing an upper layer outer sheath and a lower layer outer sheath of the molded product, manufacturing and preparing a filling material which forms a filling layer between the upper layer outer sheath and the lower layer outer sheath, positioning the lower layer outer sheath material in an internal space of a lower mold, disposing a temporary template on an upper portion of the lower mold to seal the internal space, and then injecting the filling material between the lower layer outer sheath material and the temporary template, removing the temporary template, and then positioning the upper layer outer sheath material on the injected filling material of the lower mold, and integrating the upper layer outer sheath material, the filling material, and the lower layer outer sheath material by heating and compression.

Abstract: A low-melting adhesive film may include a first adhesive layer made of a material comprising thermoplastic polyurethane, a second adhesive layer made of a material comprising aromatic-based hot-melt thermoplastic polyurethane capable of being applied to low temperature adhesion at a temperature of 60° C. or higher, and a polyethylene (PE)-based protective film layer. The low-melting adhesive film may be used to adhere a carpet fabric to a sound absorbing material and thus produce an integrated sound absorbing and proofing composite carpet.