
FEDCO Electronics Products

Precision Sonic Welding
Sonic welding is used to close the battery packs. During welding, a form fitted holding fixture prevents the bottom half of the pack from vibrating. The top half has an extra "energy bead" of plastic at the edge where it mates with the bottom. The welder concentrates a high frequency energy pulse to the top half which melts the "energy bead" and forms a strong weld.