NN, Inc. Precision Engineered Products Group’s, Polymet brand is a leading global producer of single-source electrical contact tape solutions. These are overlay clad materials in two or more layers precision formed to meet the requirements of high-speed, automatic welding equipment for the manufacture of electrical contact assemblies.
By precisely controlling the thickness of the clad layers, contact tape minimizes precious metal usage, maximizes conductivity, and provides a resistive backing for welding. Precision Engineered Products Group’s in-house custom v-slit tooling produces contact tapes with as low as a 2:1 width-to-thickness ratio, while eliminating the burr-up, burr-down conditions that may result from conventional slitting.
After v-slitting, the clad material is form-rolled with custom in-house tooling to make a precise profile for the contact surface, and to form a close tolerance weld projection on the bottom to assure the highest-quality, longest-lasting welds.
Contact tapes are formed with diamond, waffle, rail, or knurled weld projections in a variety of configurations.
Continuous improvement is a Precision Engineered Products Group core principle. Process specifications are rigorously maintained for every item manufactured, ensuring lot-to-lot consistency and traceability. Production facilities are ISO 9001-certified.
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