INSULATED STRUCTURE FOR THE CASING OF A REFRIGERATION APPLIANCE

摘要

An insulated structure such as the door of a refrigeration appliance is formed in one operation by simultaneously vacuum forming two layers of plastics material (7, 8) against respective tools (12, 13), and bringing the tools together with such a force that material is displaced from the peripheral seam, in order to provide an integrated structure along the seam which lends strength to the seam.