Patent ID: 7708856

Claim:
A method to control the post sinter dimensions of a multilayer ceramic substrate sintered under load comprising the steps of: providing at least one first continuous non-densifying structure; providing at least one second continuous non-densifying structure; providing at least one personalized ceramic greensheet having a local peripheral kerf area that laterally surrounds a ceramic product and an external peripheral kerf area that laterally surrounds an outer perimeter of said local peripheral kerf area, wherein said external peripheral kerf area will be green sized away before sintering said multilayer ceramic substrate and said local peripheral kerf area will be separated away from said multilayer ceramic substrate after sintering said multilayer ceramic substrate; placing said at least one first continuous non-densifying structure on the local peripheral kerf area of said at least one personalized ceramic greensheet to surround said ceramic product; placing said at least one second continuous non-densifying structure on the external peripheral kerf area of said at least one personalized ceramic greensheet prior to lamination wherein said at least one second continuous non-densifying structure will at least partially control the dimensions of said green ceramic laminate during lamination; placing said at least one personalized ceramic greensheet having said at least one first continuous non-densifying structure in a stack of personalized greensheets; laminating said stack of personalized ceramic greensheets to form a green ceramic laminate wherein said at least one first continuous non-densifying structure will at least partially control the dimensions of said green ceramic laminate during lamination; pre-sinter sizing said green ceramic laminate thereby separating said at least one second continuous non-densifying structure from said green ceramic laminate prior to sintering; and sintering said green ceramic laminate under load to form a multilayer ceramic substrate wherein said at least one first continuous non-densifying structure will at least partially control the dimensions of said multilayer ceramic substrate during sintering.