Patent ID: 7220689
Filing Date: 2007-05-22
Classification: B32B,Y10T

Abstract:
1. A lightweight heat resistant and insulative composite product sheet, containing glass fibers, consisting essentially of: a) homogenized glass fiber and binder material forming a first layer, b) binder material extending in a second layer adjacent the first layer and bonded thereto, c) woven glass fiber facing cloth extending in a third layer adjacent the second layer and bonded thereto so that the second layer is sandwiched between the first and third layers, d) binder material in the layers being cured at elevated temperature between about 425° F. and 475° F., and during a time interval between 2 and 4 minutes, to integrate the layers, and e) the bulk of the fibers in said first layer having diameters between 0.00003 and 0.00015 inch.