Method of making a flexible jumper strip

A process for making a jumper strip with pin-like lead ends comprising the steps of:

• laminating a conductor sheet and a smaller adhesive coated first insulation sheet together so that the conductor sheet extends beyond the area of the first insulation sheet in the area where the jumper pins are to be formed;
• etching the conductor sheet so as to form a conductor pattern from the conductor sheet, which pattern includes conductor leads ending in the area beyond the first insulation sheet, the conductor pattern in the area extending beyond the first insulation sheet also having a dam area connecting the leads, said dam area beginning at a certain distance from the first insulation sheet and ending at a certain distance from the end of the leads;
• folding the conductor pattern in the area of the dam so that the leads which were beyond the dam area rest on a portion of the leads before the dam area extending onto the first insulation sheet;
• forming a jumper pin at the end of each lead in the area beyond the first insulation sheet, said pins extending from a position on the first insulation sheet to the lead end, and
• imparting a V-shaped cross section to the pins in their transverse direction in at least part of those portions of the pins that extend beyond the first insulation sheet.