Patent ID: 9695626
Date: 2017-07-04
CPC Classifications: B21D,E06B,F25D

Claim:
1. A method for manufacturing a door, the method comprising: fixing edge portions of a metal plate within a mold frame; pressing and deforming the metal plate to manufacture an outer door of which a front surface, two side surfaces, a top surface, and a bottom surface are integrated with each other, and wherein the side surfaces, top surface, and bottom surface extend from the front surface in the same direction; removing the edge portions from the outer door that were fixed within the mold frame during the pressing and deforming of the metal plate; cutting away a portion of each corner of the side surfaces, the top surface, and the bottom surface; bending edges of the side surfaces, the top surface, and the bottom surface of the outer door inwardly to define flanges at the side surfaces, the top surface, and the bottom surface of the outer door; and after defining the flanges at the side surfaces, the top surface, and the bottom surface of the outer door, injecting a foam agent into a space defined by the side surfaces, the top surface, the bottom surface, and the flanges of the outer door, wherein the flanges include four flanges, and each end portion of the four flanges is spaced apart from the remainder of the flanges, and wherein the corners of each of the four flanges do not overlie with any other flange corners.