Mutual's Electrical Tapes are available in over 35 sizes and widths and in medium or tight weave
Columbia-brand fiberglass, non-adhesive electrical tapes from Mutual are available in a wide variety
of widths, thicknesses and styles for practically every electrical insulation requirement. Sizes range from .003" to .025" in thickness, and from 1/4" to 6"
in width. Medium weave tapes are made in thickness deom .004" to .025". Tight
weave tapes are furnixhed in thicknesses from .003" to .010" The high strength and unusual dimensional stability have resulted in the extensive use of Mutual's electrical
tapes throughout the world. They are manufactured to conform to General Electric, Westinghouse, and military specifications as well as custom requirements.
Untreated tapes are generally used by the electrical industry as coil wrappers, protective coverings, conductor insulation, mechanical reinforcements, etc. Whether
applied in treated or untreated form, Mutual's fiberglass and dacron tapes are ultimately varnished. They very rarely go into actual electrical service in an uncoated
form. These tapes are used in many kinds of electrical apparatus, from the smallest relay coils to huge turbogenerators.
Mutual's Fiberglass Uni-Directional Tapes are used for banding and edging applications
Mutual's pre-preg fiberglass polyester banding tape--a high strength glass tape--is
used to replace steel banding on armatures and is also used as tying cord. All banding tape resin systems are class H (180 degrees C). Because Mutual's fiberglass banding
tape acts as both an insulator and a band, many of the materials generally used steel banding are not required such a steel wire insulation, solder, etc. B-stage fiberglass
banding tape is manufactured by Mutual from high strength glass yarns laid parallel and impregnated with specially designed B-staged resins. The fiberglass tapes
manufactured by Mutual have a 25% or 30% resin content and are supplied in pancake, roll or spool configurations.
Fiberglass edging tape is often used in conjunction with glass banding tape to produce more uniform bands. This type of tape is made by sewing a bead of glass rope into a
resin impregnated glass tape.
Mutual also manufactures polyester shrink tape. These woven selvedge polyester
tapes are often used in V.P.I. systems since they are stronger and less expensive than cut-edge tapes.