Built-up mica plate for high temperature applications

Mica occurs in nature in “books” consisting of a number of layers or laminae which can be readily split and separated along basic cleavage planes. Most of the mica pieces are too small in size for industrial use, so that it is necessary to split the mica into very thin laminae (0.0006 to 0.0013 in.) and to build up plates from these laminae using a suitable binding material. When in this form it is known as “manufactured electrical mica”.