Method of manufacturing a dry type electrical insulation

摘要

A method of making a dry type insulation is provided. The method includes combining a base fiber having a first outer surface with a binder material wherein the base fiber has a first melting point and the binder material has a second melting point which is different from the first melting point, heating the base fiber and binder material to a temperature above the second melting point, but below the first melting point using a double-belt press to form a resultant dry type insulation, compressing the base fiber and binder material using the double-belt press to form the resultant dry type insulation and cooling the resultant dry type insulation using the double-belt press.

主权项

1. A method of manufacturing a dry type electrical insulation laminate, comprising:
co-extruding base fibers having a first outer surface together with a binder material such that the binder material is coated on the base fibers and the binder material forms a sheath over the surface of the base fibers, wherein the base fibers have a first melting point and the binder material has a second melting point which is different from the first melting point; heating the base fibers and binder material to a temperature above the second melting point, but below the first melting point using a double-belt press that includes at least one roller chain to form a resultant dry type insulation; compressing the base fibers and binder material using the double-belt press to join the binder material of the base fibers to form the resultant dry type insulation; cooling the resultant dry type insulation using the double-belt press; providing a sheet of conductor material having a length shorter than a length of the resultant dry type insulation; and layering the resultant dry type insulation between layers of the sheet of conductor to form a laminate; and heating the laminate that includes the resultant dry type insulation and the layers of the sheet of conductor while applying pressure to the resultant dry type insulation and the layers of the sheet of conductor to bond the resultant dry type insulation to the layers of the sheet of conductor, wherein the base fibers comprise staple fibers which are stable at a temperature needed to melt the binder material.