The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 13, 1990
Filed:
May. 31, 1989
Charles R Weir, Sarnia, CA;
Paul E Metcalfe, Corunna, CA;
Fiberglas Canada, Inc., Willowdale, CA;
Abstract
Laminar insulating foam roofing material (e.g. phenolic resin foam) having improved dimensional stability and which resists warpage when hot asphalt is applied to one surface thereof during installation, is disclosed. A flexible web material such as Kraft paper is bonded to opposing surfaces of the foam material by means of a uniform asphalt coating applied to one surface of the web material, the asphalt being a 'sandwich' layer between the insulating foam material and said web material. This material is made by the steps of: (a) forwardly advancing the aforesaid laminar insulating foam material between a pair of opposed rolls; and (b) simultaneously applying a predetermined quantity of a heat absorbing and bonding material to surfaces of two flexible webs on opposing sides of said laminar foam material and bringing said two flexible webs each of which has a coating of said heat absorbing and bonding material applied to a surface thereof, into contact with said opposing surfaces of said laminar foam material at said opposed rolls, such that after said bringing into contact of the insulating foam material and coated web material, said materials bond together to form said assembly.