Patent ID: 8048352

Claim:
A method of manufacturing a device including a first layer, a second layer and a third layer, the method comprising: selecting a material for the second layer, the material having a viscosity value at a shear rate of about 1 s −1 or less and at a selected temperature; selecting a nanocomposite material for the first layer that has a viscosity within about 20% to about 125% of the viscosity value of the material for the second layer, wherein the nanocomposite material includes a polymer matrix having dispersed therein nanosized particles having a size of from 1 nm to 1000 nm; selecting a material for the third layer, the third material being selected such that the viscosity of the second material is between about 5 percent and about 35 percent of a viscosity of the third material; co-extruding the first, second and third layers.