Patent ID: 6147138
Filing Date: 2000-11-14
Classification: B29C,B29K,B33Y

Abstract:
A method for the manufacturing of parts by a deposition technique, comprising the steps of:(a) depositing a layer of a pourable composite particle material containing binder precoated particles into a process area of a defined length and width fitting to the dimensions of a part to be manufactured, said binder material coating requiring a starting value of specific energy to be induced for binding and solidifying the composite material;(b) selectively applying a moderating agent onto said composite material layer in a selective sub-area of said process area while keeping a remaining area outside said sub-area free of the moderating agent, thereby selectively modifying the specific energy to be induced in one of said sub-area and said remaining area from said starting value to a discrete different value;(c) globally inducing energy in said layer of composite material with a level of specific energy between said starting value and said discrete different value, thereby effecting a selective solidification of the composite material of the selected one of said sub-area and said remaining area;(d) repeating steps (a) to (c); and(e) separating solidified composite material from non-solidified composite material.