Patent ID: 6551677
Filing Date: 2003-04-22
Classification: B32B,E04B,Y10T

Abstract:
A facing sheet for overlying and being bonded to a major surface of a fibrous insulation blanket; the fibrous insulation blanket having a length, a width and a thickness; the fibrous insulation blanket having a first major surface and a second major surface which each extend for the length and the width of the fibrous insulation blanket; the fibrous insulation blanket being separable by hand at and along one or more longitudinally extending lines, spaced apart from each other across the width of the fibrous insulation blanket, into a plurality of blanket sections of lesser width than the width of the fibrous insulation blanket; the one or more longitudinally extending lines where the blanket is separable longitudinally being spaced inward from lateral edges of the fibrous insulation blanket; the facing sheet comprising:a sheet having a length and a width, the sheet having a first major surface and a second major surface which each extend for the length and the width of the sheet; the sheet having a first longitudinally separable means therein extending for the length of the sheet; the first longitudinally separable means being separable by hand along the length of the sheet; the first longitudinally separable means of the sheet being spaced inwardly from lateral edges of the sheet and being located in the sheet to be aligned longitudinally with a first of the longitudinally extending lines of the fibrous insulation blanket when the sheet is bonded to the fibrous insulation blanket whereby the fibrous insulation blanket with the sheet can be handled as a unit for insulating a cavity having a width about equal to the width of the fibrous insulation blanket or easily separated into blanket sections by hand at the first longitudinally extending line of the fibrous insulation blanket and the first separable means of the sheet for insulating a cavity having a lesser width than the width of the fibrous insulation blanket; the first separable means of the sheet being a perforated line; and perforations of the first perforated line being sealed with a bonding agent on the sheet for bonding the second major surface of the sheet to the first major surface of the fibrous insulation blanket so that the sheet functions as a vapor barrier.