Process for drilling holes in connecting support for electrical components includes coating support with heat resistant material and removing and vaporizing and/or liquefying coating material and support material in the hole to be drilled

摘要

Process for drilling holes in a connecting support made from insulating material comprises: coating surface of support on beam inlet side and/or optionally on beam outlet side with soluble heat resistant material (8, 9); removing and vaporizing and/or liquefying coating material and support material in the hole to be drilled using an energy beam; and removing coating from support surface. Preferred Features: The energy beam used is a laser beam. The coating is applied by spraying, immersing or casting. The coating is removed using ultrasound. The coating is a photoresist, water glass, a pectin solution, gelatin, a paste or a solder stop lacquer.