High speed multiple insulation tapes application

In summary, the use of a multiple, equal lengths registered tapes package has proved successful in the achievement of high speed spiral wound taping applications. Conventional high speed (2,000–3,000 head RPM) concentric head taping machines, both single and dual head, were used in the development of data on which this paper is based. Copper and aluminum square and rectangular magnet wires of the preferred numbers series sizes individually taped with Nomex∗, thermally upgraded cellulosic papers, creped thermally up-graded papers, and film tapes were the end products of the production processes studied. As of February 19 77, development studies, using pressure sensitive tapes and the same conventional concentric head taping equipment, showed positive results, but no production data was available. Also, studies involving the use of eccentric head taping machines had begun, but insufficient process and product data was available for inclusion in this paper. No development or laboratory data, except that preliminary to proven production processes, was used in preparation of this report.