Patent ID: 6569252
Filing Date: 2003-05-27
Classification: B23K,C11D,C23G,H01L,H05K,Y10S

Abstract:
A method for cleaning a conductive or soldering paste from at least one object used in the fabrication of semiconductor packaging substrates, organic chip carriers or cards, the method comprising the steps of:immersing said object in a solvent consisting of at least one dipropylene glycol alkyl ether and at least one tripropylene glycol alkyl ether; and rinsing said object in water, thereby cleaning said paste from said object; wherein said object is selected from a group consisting of screening mask, paste processing parts used in the production of ceramic substrates or plastic substrates, screen stencils, stencil printing equipment, paste dispense equipment, paste making equipment, paste processing equipment, metal substrate, ceramic substrate and plastic substrate.