Multilayer structure useful for electrical insulation

A device comprising an electrical conductor and an electrically insulating multilayer structure material comprising:

• (a) a first layer containing polyester and cellulose wherein
• (i) the polyester is present in an amount of 0 to 50 weight percent floc and 50 to 100 weight percent fibrid,
• (ii) the cellulose is present in the form of cellulosic pulp fiber and
• (iii) the polyester is present in an amount of 0.5 to 75 weight percent and the cellulose is present in an amount of 25 to 99 weight percent, said percentages on the basis of the polyester and cellulose and
• (b) a second layer containing cellulosic pulp fiber with the proviso that the second layer does not contain polyester.

A multilayer structure comprising:

• (a) a first layer containing polyester, cellulose and aramid wherein
• (i) the polyester is present in an amount of 0 to 50 weight percent floc and 50 to 100 weight percent fibrid,
• (ii) the cellulose is present in the form of cellulosic pulp fiber;
• (iii) the aramid is present as an meta-aramid in an amount of 0 to 50 weight percent floc and 50 to 100 weight percent fibrid;
• and
• (iv) the polyester is present in an amount of 0.5 to 75 weight percent, the cellulose is present in an amount of 0.5 to 85 weight percent, the aramid is present in an amount of 0.5 to 75 weight percent, said percentages on the basis of the polyester, cellulose and aramid and;
• (b) a second layer containing cellulosic pulp fiber with the proviso that the second layer does not contain polyester or aramid.

A device comprising an electrical conductor and an electrically insulating multilayer structure material comprising:

• (a) a first layer containing polyester, cellulose and aramid wherein
• (i) the polyester is present in an amount of 0 to 50 weight percent floc and 50 to 100 weight percent fibrid,
• (ii) the cellulose is present in the form of cellulosic pulp fiber;
• (iii) the aramid is present as an meta-aramid in an amount of 0 to 50 weight percent floc and 50 to 100 weight percent fibrid;
• and
• (iv) the polyester is present in an amount of 0.5 to 75 weight percent, the cellulose is present in an amount of 0.5 to 85 weight percent, the aramid is present in an amount of 0.5 to 75 weight percent, said percentages on the basis of the polyester, cellulose and aramid and;
• (b) a second layer containing cellulosic pulp fiber with the proviso that the second layer does not contain polyester or aramid.