Composite mirror panels

Details Composite mirror panels Composite mirror panels

1982-05-04

1984-08-14

Dawson, Robert A.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

523095, 5230911, 52573, 52786, 156 79, 156 91, 156222, 156245, 248549, 264 465, 350288, 428 99, 428215, 4283184, 4289122, B32B 520

Patent

active

044657340

ABSTRACT:
A method of manufacturing a composite which includes a mirror panel comprising the steps of water-tightly bonding a first backing sheet made of waterproof material to the rear side of a mirror including a vitreous sheet bearing a radiation-reflecting coating on its rear side, thereby forming a mirror/backing sheet laminate; locating the laminate and a second backing sheet between a pair of dies with the laminate and the second backing positioned in spaced relationship; injecting the space between the laminate and the second backing sheet with a foamable plastic material; allowing or causing the foamable plastic material to foam and thereby press the laminate and the second backing sheet into close conformity with the respective die faces and, allowing or causing the foam to set and adhere to each backing sheet while the laminate and second backing sheet are pressed against the die faces to form a substantially rigid composite sandwich structure.

REFERENCES:
patent: 2978958 (1961-04-01), Dover
patent: 3383152 (1968-05-01), Ward
patent: 3448553 (1969-06-01), Herr et al.
patent: 4325178 (1982-04-01), Pruehs

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