Abstract: An insulating unit suitable for installation in walls, doors, and the like, is manufactured by a method that includes the steps of supporting a heat-shrinkable plastic film between spaced but parallel glass panes to provide an integral unit, and then heating the unit to cause the plastic film to shrink and become taut and wrinkle-free.
Type:
Grant
Filed:
May 11, 1981
Date of Patent:
June 15, 1982
Assignee:
Cardinal Insulated Glass Co.
Inventors:
Renato A. Lizardo, Roger D. O'Shaughnessy