Interconnection of the two sides of a double-sided flexible circuits can likewise be accomplished mechanically. Over the years, a number of techniques have been established. While all of the means have shown performance, the specific approaches are limited to applications where requirements will allow their use. The complying with are several of the many means that

The alternative means for interconnecting two-metal layer flexible circuits illustrated are not typical, but represent prospective solutions for consideration when tested with a distinct interconnection trouble. can be utilized throughout the years to create electromechanical connections.

Z WIRE INTERCONNECTION

The Z cord is an early forerunner of the plated through-hole.
It is merely a cord bent in the shape of a Z and also carefully soldered to adjoin both sides of the circuit. This strategy is usually utilized just for vias considering that other through-hole connections are completed by the part leads themselves.

EYELETTING

Eyelets are another early option to the plated throughhole. Eyelets are the equivalent of small rivets with openings at their facilities, like those located around shoe lace holes. Like Z cables, eyelets could make affiliation feasible in between sides of a two-sided circuit.

CHILLY WELDING

Cold welding, developed by developer Robert Lomerson, is a fascinating strategy for adjoining the two sides of a double-sided flexible circuits. The means needs the fabrication of unique tools and manufacture of the flexible circuits according to a prescribed style. Permanent affiliation is gotten by pressing copper into copper through openings in the flexible circuits laminate, creating a metallurgical joint by chilly welding using the unique etched or machined tools.